fix: use correct Bitbucket API for user workspaces and clarify repo config

The `/workspaces` API endpoint was updated to `/user/workspaces` to correctly retrieve workspaces for the authenticated user.

Configuration guidance for `DEFAULT_WORKSPACE` and `DEFAULT_REPO` in documentation and templates now explicitly references deriving these values from the Bitbucket repository URL, simplifying initial setup.

.env.template

@@ -0,0 +1,16 @@
+BITBUCKET_MCP_EMAIL=your_email@example.com
+BITBUCKET_MCP_TOKEN=your_api_token
+# Find these in your Bitbucket repo URL: https://bitbucket.org/my-workspace/my-repo/pull-requests
+DEFAULT_WORKSPACE=my-workspace
+DEFAULT_REPO=my-repo
+
+# Integration test write operations
+# ---------------------------------------------------------------------------------
+# Set RUN_WRITE_TESTS=true to enable tests that create/modify/delete data.
+#
+# TEST_PR_ID must also be set — write tests will only run against this specific PR
+# to avoid accidentally modifying unrelated pull requests.
+# ---------------------------------------------------------------------------------
+# RUN_WRITE_TESTS=true
+# TEST_PR_ID=123
+# ---------------------------------------------------------------------------------

.gitignore

@@ -6,9 +6,9 @@ dist/
 tsconfig.tsbuildinfo
 
 # Environment
-.env
+*.env
-.env.local
+*.env.*
-.env.*.local
+!*.env.template
 
 # IDE
 .idea/

CLAUDE.md

@@ -41,9 +41,15 @@ The server is a 3-layer pipeline: **MCP protocol** -> **Router** -> **Bitbucket
 |----------|---------|
 | `BITBUCKET_MCP_EMAIL` | Bitbucket account email (Basic Auth username) |
 | `BITBUCKET_MCP_TOKEN` | Bitbucket API token (Basic Auth password) |
-| `DEFAULT_WORKSPACE` | Optional default workspace slug |
+| `DEFAULT_WORKSPACE` | Optional default workspace slug (from your repo URL: `https://bitbucket.org/{workspace}/{repo}/...`) |
-| `DEFAULT_REPO` | Optional default repository slug |
+| `DEFAULT_REPO` | Optional default repository slug (from your repo URL: `https://bitbucket.org/{workspace}/{repo}/...`) |
+| `RUN_WRITE_TESTS` | Set to `true` to enable write integration tests |
+| `TEST_PR_ID` | PR ID to use for write integration tests (required when `RUN_WRITE_TESTS=true`) |
+
+Copy `.env.template` to `.env` and fill in your values for local development and testing.
 
 ## Testing
 
 Tests use vitest with 30s timeouts. Unit tests mock the Bitbucket client; integration tests call the real API and require valid credentials in the environment.
+
+Write integration tests (approve/unapprove, comments, tasks) are skipped by default. They require both `RUN_WRITE_TESTS=true` and `TEST_PR_ID` to be set. Write tests never pick a random PR — if `TEST_PR_ID` is missing the test is skipped with a warning.

README.md

@@ -15,16 +15,19 @@
 
 ## Overview
 
-This MCP server exposes **read-only** Bitbucket Cloud Pull Request operations as tools that AI agents (Claude, etc.) can invoke over stdio. It connects your AI workflow directly to your Bitbucket repositories.
+This MCP server exposes Bitbucket Cloud operations as tools that AI agents (Claude, etc.) can invoke over stdio. It connects your AI workflow directly to your Bitbucket repositories — covering everything from read-only PR inspection to full write operations.
 
 ### Capabilities
 
 | Category | Operations |
 |----------|-----------|
-| **Pull Requests** | List, get details, get full expanded PR |
+| **Workspaces & Repos** | List workspaces, list/get repositories, list branches |
+| **Pull Requests (read)** | List, get details, get full expanded PR, status |
+| **Pull Requests (write)** | Create, update, merge, decline |
 | **Code Review** | Diff, patch, file changes, commits |
-| **Collaboration** | Comments, activities, participants, reviewers |
+| **Collaboration** | Comments (read/add/edit/delete), activities, participants, reviewers |
-| **Workflow** | Status, tasks, task count |
+| **Review Workflow** | Approve, unapprove, request changes, remove request-changes |
+| **Tasks** | Get tasks, task count, create/update/delete tasks |
 | **Auth** | Token validation |
 
 ---
@@ -51,7 +54,7 @@ npm run build
 
 Add the MCP server to your Claude configuration:
 
-**Claude Code** — edit `~/.claude/settings.json` (global) or `.claude/settings.json` (per-project):
+**Claude Code** — edit `~/.claude.json` (global) or `.claude/settings.json` (per-project):
 
 ```json
 {
@@ -92,6 +95,8 @@ Add the MCP server to your Claude configuration:
 > **Important:**
 > - Replace `/absolute/path/to/bitbucket-mcp` with the actual absolute path where you cloned the repo.
 > - `DEFAULT_WORKSPACE` and `DEFAULT_REPO` are optional but convenient — they let you omit those parameters from every tool call.
+> - Read them directly from your Bitbucket repo URL: `https://bitbucket.org/{workspace}/{repository}/pull-requests`
+>   For example, `https://bitbucket.org/my-workspace/my-repo/pull-requests` → `DEFAULT_WORKSPACE=my-workspace`, `DEFAULT_REPO=my-repo`
 > - Get your API token from [Atlassian API Tokens](https://id.atlassian.com/manage-profile/security/api-tokens).
 
 ### 4. Verify
@@ -108,6 +113,15 @@ Restart Claude (or reload MCP servers), then ask Claude to run the `validate_tok
 |------|-------------|
 | `validate_token` | Verify credentials are valid |
 
+### Workspaces & Repositories
+
+| Tool | Description | Key Parameters |
+|------|-------------|----------------|
+| `list_workspaces` | List all workspaces the authenticated user belongs to | `page?`, `pagelen?` |
+| `list_repositories` | List repositories in a workspace | `workspace`, `role?`, `page?`, `pagelen?` |
+| `get_repository` | Get metadata for a specific repository | `workspace`, `repository` |
+| `list_branches` | List branches in a repository | `workspace`, `repository`, `filter_by_name?`, `page?`, `pagelen?` |
+
 ### Pull Request Discovery
 
 | Tool | Description | Key Parameters |
@@ -117,6 +131,24 @@ Restart Claude (or reload MCP servers), then ask Claude to run the `validate_tok
 | `get_full_pull_request` | Get PR with all fields expanded | `workspace`, `repository`, `pullRequestId` |
 | `get_pull_request_status` | Get PR state (open/merged/declined) | `workspace`, `repository`, `pullRequestId` |
 
+### Pull Request Write Operations
+
+| Tool | Description | Key Parameters |
+|------|-------------|----------------|
+| `create_pull_request` | Create a new pull request | `workspace`, `repository`, `title`, `source_branch`, `destination_branch`, `description?`, `reviewers?`, `close_source_branch?` |
+| `update_pull_request` | Update title, description, reviewers, or destination branch | `workspace`, `repository`, `pullRequestId`, `title?`, `description?`, `reviewers?`, `destination_branch?` |
+| `merge_pull_request` | Merge an open pull request | `workspace`, `repository`, `pullRequestId`, `merge_strategy?`, `commit_message?`, `close_source_branch?` |
+| `decline_pull_request` | Decline (close) an open pull request | `workspace`, `repository`, `pullRequestId` |
+
+### Review Workflow
+
+| Tool | Description | Key Parameters |
+|------|-------------|----------------|
+| `approve_pull_request` | Approve a pull request | `workspace`, `repository`, `pullRequestId` |
+| `unapprove_pull_request` | Remove your approval | `workspace`, `repository`, `pullRequestId` |
+| `request_changes_pull_request` | Request changes on a pull request | `workspace`, `repository`, `pullRequestId` |
+| `remove_request_changes_pull_request` | Remove a request-changes vote | `workspace`, `repository`, `pullRequestId` |
+
 ### Code Changes
 
 | Tool | Description | Key Parameters |
@@ -126,12 +158,20 @@ Restart Claude (or reload MCP servers), then ask Claude to run the `validate_tok
 | `get_pull_request_changes` | List modified files | `workspace`, `repository`, `pullRequestId` |
 | `get_pull_request_commits` | List commits in PR | `workspace`, `repository`, `pullRequestId` |
 
-### Collaboration
+### Comments
 
 | Tool | Description | Key Parameters |
 |------|-------------|----------------|
 | `get_pull_request_comments` | Get all comments | `workspace`, `repository`, `pullRequestId` |
 | `get_pull_request_comment` | Get a specific comment | `workspace`, `repository`, `pullRequestId`, `commentId` |
+| `add_pull_request_comment` | Add a general or inline comment | `workspace`, `repository`, `pullRequestId`, `content`, `inline_path?`, `inline_line?`, `parent_comment_id?` |
+| `update_pull_request_comment` | Edit an existing comment | `workspace`, `repository`, `pullRequestId`, `commentId`, `content` |
+| `delete_pull_request_comment` | Delete a comment | `workspace`, `repository`, `pullRequestId`, `commentId` |
+
+### Activities & Participants
+
+| Tool | Description | Key Parameters |
+|------|-------------|----------------|
 | `get_pull_request_activities` | Get activity feed | `workspace`, `repository`, `pullRequestId` |
 | `get_pull_request_participants` | Get all participants | `workspace`, `repository`, `pullRequestId` |
 | `get_pull_request_reviewers` | Get assigned reviewers | `workspace`, `repository`, `pullRequestId` |
@@ -142,8 +182,11 @@ Restart Claude (or reload MCP servers), then ask Claude to run the `validate_tok
 |------|-------------|----------------|
 | `get_pull_request_tasks` | Get PR tasks | `workspace`, `repository`, `pullRequestId` |
 | `get_pull_request_task_count` | Get task count | `workspace`, `repository`, `pullRequestId` |
+| `create_pull_request_task` | Create a review task | `workspace`, `repository`, `pullRequestId`, `content`, `comment_id?` |
+| `update_pull_request_task` | Update or resolve/unresolve a task | `workspace`, `repository`, `pullRequestId`, `taskId`, `content?`, `state?` |
+| `delete_pull_request_task` | Delete a task | `workspace`, `repository`, `pullRequestId`, `taskId` |
 
-> **Pagination:** Tools that return lists support `limit` and `start` parameters.
+> **Pagination:** Tools that return lists support `page` and `pagelen` parameters.
 
 ---
 
@@ -184,13 +227,17 @@ Response:
 
 ### Running Locally
 
-For development, you can use a `.env` file instead of configuring credentials in the MCP client:
+For development, you can use a `.env` file instead of configuring credentials in the MCP client. Copy `.env.template` to `.env` and fill in your values:
 
 ```env
 BITBUCKET_MCP_EMAIL=your_email@example.com
 BITBUCKET_MCP_TOKEN=your_api_token
 DEFAULT_WORKSPACE=my-workspace
 DEFAULT_REPO=my-repo
+
+# Only needed when running write integration tests (see Testing below)
+# RUN_WRITE_TESTS=true
+# TEST_PR_ID=123
 ```
 
 ```bash
@@ -204,13 +251,13 @@ npm start
 ### Testing
 
 ```bash
-# Run tests
+# Run all tests (unit only by default)
 npm test
 
 # Run tests in watch mode
 npm run test:watch
 
-# Integration tests (requires valid credentials)
+# Integration tests — read-only, requires valid credentials in .env
 npm run test:integration
 
 # Type check
@@ -220,6 +267,15 @@ npx tsc --noEmit
 npm run test:coverage
 ```
 
+**Write operation tests** (approve/unapprove, comments, tasks) are disabled by default and require two additional variables in your `.env`:
+
+| Variable | Description |
+|----------|-------------|
+| `RUN_WRITE_TESTS=true` | Opt in to running write tests |
+| `TEST_PR_ID=<id>` | ID of a PR you own and can safely modify |
+
+`TEST_PR_ID` is mandatory — write tests will never fall back to a random PR from the repository. If it is not set, each write test is skipped with a warning. This prevents accidental modifications to PRs you don't intend to touch.
+
 ### Project Structure
 
 ```

docs/superpowers/specs/2026-05-20-bitbucket-mcp-features-design.md

@@ -0,0 +1,253 @@
+# Bitbucket MCP Server — Missing Features Design
+
+**Date:** 2026-05-20  
+**Status:** Approved
+
+---
+
+## Overview
+
+Extend the existing read-only Bitbucket MCP server with:
+
+1. **Repository/workspace browsing** — list workspaces, repos, branches; get repo metadata
+2. **PR write operations** — create, update, merge, decline, approve, request-changes
+3. **Comment write operations** — add, update, delete comments (general and inline)
+4. **Task write operations** — create, update, delete PR tasks
+
+The server's public contract (tool names, parameter shapes, `ToolResult` response envelope) remains unchanged; new tools are additive.
+
+---
+
+## Architecture
+
+The current monolithic `bitbucket-client.ts` is split into domain modules. A shared `base-client.ts` owns the Axios instance, initialization guard, error interceptors, and `formatError`. Domain clients extend or compose the base. `BitbucketClient` becomes a composition root that wires all domain clients together and exposes a flat API to the router.
+
+```
+src/
+├── index.ts                      # MCP server — tool schemas added here
+├── router.ts                     # Tool dispatcher — new switch cases added
+├── config.ts                     # Unchanged
+├── bitbucket-client.ts           # Composition root: instantiates & delegates to domain clients
+└── clients/
+    ├── base-client.ts            # Shared Axios instance, ensureInitialized, formatError, error interceptors
+    ├── pull-request-client.ts    # All PR methods (read + write)
+    ├── repository-client.ts      # Workspace, repo, branch methods
+    └── comment-client.ts         # Comment + task CRUD
+```
+
+The router continues calling `this.client.<method>()` — the composition root makes this transparent.
+
+---
+
+## Domain Clients
+
+### `base-client.ts`
+
+Extracted from the current `bitbucket-client.ts`:
+
+- Holds the `AxiosInstance`
+- `initializeClient(options)` — loads config, creates axios, attaches interceptors
+- `ensureInitialized()` — polling guard used by all domain clients
+- `handleResponseError(error)` — 401/403/429 logging and rate-limit wait
+- `formatError(error)` — HTTP status + message formatter
+- `sleep(ms)` — utility
+
+All domain clients receive a reference to the base client (or extend it) to share the axios instance and initialization state.
+
+### `pull-request-client.ts`
+
+**Existing read methods** (migrated from current `bitbucket-client.ts`):
+- `listPullRequests`, `getPullRequest`, `getPullRequestActivities`
+- `getPullRequestChanges`, `getPullRequestComments`, `getPullRequestComment`
+- `getPullRequestCommits`, `getPullRequestDiff`, `getPullRequestPatch`
+- `getPullRequestParticipants`, `getPullRequestReviewers`, `getPullRequestStatus`
+- `getPullRequestTasks`, `getPullRequestTaskCount`, `getFullPullRequest`
+
+**New write methods:**
+
+| Method | HTTP | Endpoint |
+|--------|------|----------|
+| `createPullRequest(ws, repo, opts)` | POST | `/repositories/{ws}/{repo}/pullrequests` |
+| `updatePullRequest(ws, repo, id, opts)` | PUT | `/repositories/{ws}/{repo}/pullrequests/{id}` |
+| `mergePullRequest(ws, repo, id, opts)` | POST | `.../pullrequests/{id}/merge` |
+| `declinePullRequest(ws, repo, id)` | POST | `.../pullrequests/{id}/decline` |
+| `approvePullRequest(ws, repo, id)` | POST | `.../pullrequests/{id}/approve` |
+| `unapprovePullRequest(ws, repo, id)` | DELETE | `.../pullrequests/{id}/approve` |
+| `requestChangesPullRequest(ws, repo, id)` | POST | `.../pullrequests/{id}/request-changes` |
+| `removeRequestChangesPullRequest(ws, repo, id)` | DELETE | `.../pullrequests/{id}/request-changes` |
+
+`createPullRequest` options:
+```ts
+{
+  title: string;
+  source_branch: string;
+  destination_branch: string;
+  description?: string;
+  reviewers?: string[];         // account UUIDs or usernames
+  close_source_branch?: boolean;
+}
+```
+
+`mergePullRequest` options:
+```ts
+{
+  merge_strategy?: 'merge_commit' | 'squash' | 'fast_forward';
+  commit_message?: string;
+  close_source_branch?: boolean;
+}
+```
+
+`updatePullRequest` options (all optional, at least one required):
+```ts
+{
+  title?: string;
+  description?: string;
+  reviewers?: string[];
+  destination_branch?: string;
+}
+```
+
+### `repository-client.ts`
+
+New domain client — no existing methods to migrate.
+
+| Method | HTTP | Endpoint |
+|--------|------|----------|
+| `listWorkspaces(opts)` | GET | `/workspaces` |
+| `listRepositories(ws, opts)` | GET | `/repositories/{workspace}` |
+| `getRepository(ws, repo)` | GET | `/repositories/{workspace}/{repo_slug}` |
+| `listBranches(ws, repo, opts)` | GET | `/repositories/{ws}/{repo}/refs/branches` |
+
+`listWorkspaces` options: `page`, `pagelen`  
+`listRepositories` options: `role` (`member`|`contributor`|`owner`), `page`, `pagelen`  
+`listBranches` options: `page`, `pagelen`, `filter_by_name` (maps to `q=name~"<value>"`)
+
+### `comment-client.ts`
+
+**Existing read methods** (migrated):
+- `getPullRequestComments`, `getPullRequestComment`
+
+**New write methods:**
+
+| Method | HTTP | Endpoint |
+|--------|------|----------|
+| `addPullRequestComment(ws, repo, id, opts)` | POST | `.../pullrequests/{id}/comments` |
+| `updatePullRequestComment(ws, repo, id, commentId, opts)` | PUT | `.../comments/{commentId}` |
+| `deletePullRequestComment(ws, repo, id, commentId)` | DELETE | `.../comments/{commentId}` |
+| `createPullRequestTask(ws, repo, id, opts)` | POST | `.../pullrequests/{id}/tasks` |
+| `updatePullRequestTask(ws, repo, id, taskId, opts)` | PUT | `.../tasks/{taskId}` |
+| `deletePullRequestTask(ws, repo, id, taskId)` | DELETE | `.../tasks/{taskId}` |
+
+`addPullRequestComment` options:
+```ts
+{
+  content: string;
+  inline?: { path: string; to: number };  // inline comment on file:line
+  parent_id?: number;                      // reply to existing comment
+}
+```
+
+`updatePullRequestComment` options:
+```ts
+{ content: string }
+```
+
+`createPullRequestTask` options:
+```ts
+{
+  content: string;
+  comment_id?: number;  // anchor to a specific comment
+}
+```
+
+`updatePullRequestTask` options:
+```ts
+{
+  content?: string;
+  state?: 'RESOLVED' | 'UNRESOLVED';
+}
+```
+
+---
+
+## New MCP Tools (index.ts)
+
+### Repository/Workspace
+
+| Tool name | Required params | Optional params |
+|-----------|----------------|-----------------|
+| `list_workspaces` | — | `page`, `pagelen` |
+| `list_repositories` | `workspace` | `role`, `page`, `pagelen` |
+| `get_repository` | `workspace`, `repository` | — |
+| `list_branches` | `workspace`, `repository` | `filter_by_name`, `page`, `pagelen` |
+
+### PR Write
+
+| Tool name | Required params | Optional params |
+|-----------|----------------|-----------------|
+| `create_pull_request` | `workspace`, `repository`, `title`, `source_branch`, `destination_branch` | `description`, `reviewers`, `close_source_branch` |
+| `update_pull_request` | `workspace`, `repository`, `pullRequestId` | `title`, `description`, `reviewers`, `destination_branch` |
+| `merge_pull_request` | `workspace`, `repository`, `pullRequestId` | `merge_strategy`, `commit_message`, `close_source_branch` |
+| `decline_pull_request` | `workspace`, `repository`, `pullRequestId` | — |
+| `approve_pull_request` | `workspace`, `repository`, `pullRequestId` | — |
+| `unapprove_pull_request` | `workspace`, `repository`, `pullRequestId` | — |
+| `request_changes_pull_request` | `workspace`, `repository`, `pullRequestId` | — |
+| `remove_request_changes_pull_request` | `workspace`, `repository`, `pullRequestId` | — |
+
+### Comment Write
+
+| Tool name | Required params | Optional params |
+|-----------|----------------|-----------------|
+| `add_pull_request_comment` | `workspace`, `repository`, `pullRequestId`, `content` | `inline_path`, `inline_line`, `parent_comment_id` |
+| `update_pull_request_comment` | `workspace`, `repository`, `pullRequestId`, `commentId`, `content` | — |
+| `delete_pull_request_comment` | `workspace`, `repository`, `pullRequestId`, `commentId` | — |
+
+### Task Write
+
+| Tool name | Required params | Optional params |
+|-----------|----------------|-----------------|
+| `create_pull_request_task` | `workspace`, `repository`, `pullRequestId`, `content` | `comment_id` |
+| `update_pull_request_task` | `workspace`, `repository`, `pullRequestId`, `taskId` | `content`, `state` |
+| `delete_pull_request_task` | `workspace`, `repository`, `pullRequestId`, `taskId` | — |
+
+---
+
+## Router (router.ts)
+
+New `switch` cases added to `executeTool()` for every new tool. Same pattern as existing cases:
+
+1. Extract `workspace`, `repoSlug` via `getDefaultParams()`
+2. Parse integer IDs
+3. Validate required params — return `{ success: false, error: '...' }` if missing
+4. Delegate to `this.client.<method>()`
+5. Return `{ success: true, data: result }`
+
+No new helper is needed for write ops; the existing pattern is clear enough.
+
+---
+
+## Error Handling
+
+- Write operations do not retry on failure.
+- `base-client.ts` error interceptor handles 401/403/429 (existing behavior preserved).
+- All domain client methods catch errors and re-throw with `this.formatError(error)`.
+- Router catches and returns `{ success: false, error: '...' }`.
+
+---
+
+## Testing
+
+**Unit tests (`tests/unit/router.test.ts`):**
+- New cases added for every new tool, mocking `BitbucketClient` identically to existing tests.
+
+**Integration tests (`tests/integration/bitbucket-api.test.ts`):**
+- Read operations (workspaces, repos, branches) added unconditionally.
+- Write operations (merge, decline, approve, comment, task) gated on `RUN_WRITE_TESTS=true` env var to prevent accidental mutation of real PRs.
+
+---
+
+## Out of Scope
+
+- Webhooks, pipelines, deployments, issue tracker, snippets.
+- Any Bitbucket Server (self-hosted) support — this server targets Bitbucket Cloud only.
+- Streaming / SSE responses.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@bitbucket/mcp-server",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "description": "MCP Server for Bitbucket Pull Requests - AI agent integration with Bitbucket Cloud REST API",
   "type": "module",
   "main": "dist/index.js",

src/bitbucket-client.ts

@@ -1,612 +1,118 @@
-/**
+import { ClientOptions } from './clients/base-client.js';
- * Bitbucket API client with token configuration integration.
+import { PullRequestClient, CreatePROptions, UpdatePROptions, MergePROptions } from './clients/pull-request-client.js';
- */
+import { RepositoryClient } from './clients/repository-client.js';
+import { CommentClient, AddCommentOptions, CreateTaskOptions, UpdateTaskOptions } from './clients/comment-client.js';
 
-import axios, { AxiosInstance, AxiosError } from 'axios';
+export type { CreatePROptions, UpdatePROptions, MergePROptions };
-import { TokenConfigLoader, TokenConfig } from './config.js';
+export type { AddCommentOptions, CreateTaskOptions, UpdateTaskOptions };
+export type { ClientOptions as BitbucketClientOptions };
 
-export interface BitbucketClientOptions {
-  timeout?: number;
-  retryCount?: number;
-}
-
-/**
- * Bitbucket API client wrapper with authentication and error handling.
- */
 export class BitbucketClient {
-  private client!: AxiosInstance;
+  private pr!: PullRequestClient;
-  private tokenSource: string | null = null;
+  private repo!: RepositoryClient;
-  private initialized: boolean = false;
+  private comment!: CommentClient;
 
-  constructor(options: BitbucketClientOptions = {}) {
+  // ── Pull Request read ─────────────────────────────────────────────────────
-    // Initialize synchronously to avoid race conditions
+  listPullRequests!: (workspace: string, repo: string, options?: any) => Promise<any>;
-    this.initializeClient(options);
+  getPullRequest!: (workspace: string, repo: string, prId: number) => Promise<any>;
+  getPullRequestActivities!: (workspace: string, repo: string, prId: number, options?: any) => Promise<any>;
+  getPullRequestChanges!: (workspace: string, repo: string, prId: number, options?: any) => Promise<any>;
+  getPullRequestCommits!: (workspace: string, repo: string, prId: number, options?: any) => Promise<any>;
+  getPullRequestDiff!: (workspace: string, repo: string, prId: number, options?: any) => Promise<any>;
+  getPullRequestPatch!: (workspace: string, repo: string, prId: number) => Promise<any>;
+  getPullRequestParticipants!: (workspace: string, repo: string, prId: number) => Promise<any>;
+  getPullRequestReviewers!: (workspace: string, repo: string, prId: number) => Promise<any>;
+  getPullRequestStatus!: (workspace: string, repo: string, prId: number) => Promise<any>;
+  getPullRequestTasks!: (workspace: string, repo: string, prId: number) => Promise<any>;
+  getPullRequestTaskCount!: (workspace: string, repo: string, prId: number) => Promise<any>;
+  getFullPullRequest!: (workspace: string, repo: string, prId: number) => Promise<any>;
+
+  // ── Pull Request write ────────────────────────────────────────────────────
+  createPullRequest!: (workspace: string, repo: string, options: CreatePROptions) => Promise<any>;
+  updatePullRequest!: (workspace: string, repo: string, prId: number, options: UpdatePROptions) => Promise<any>;
+  mergePullRequest!: (workspace: string, repo: string, prId: number, options: MergePROptions) => Promise<any>;
+  declinePullRequest!: (workspace: string, repo: string, prId: number) => Promise<any>;
+  approvePullRequest!: (workspace: string, repo: string, prId: number) => Promise<any>;
+  unapprovePullRequest!: (workspace: string, repo: string, prId: number) => Promise<any>;
+  requestChangesPullRequest!: (workspace: string, repo: string, prId: number) => Promise<any>;
+  removeRequestChangesPullRequest!: (workspace: string, repo: string, prId: number) => Promise<any>;
+
+  // ── Repository / workspace ────────────────────────────────────────────────
+  listWorkspaces!: (options?: any) => Promise<any>;
+  listRepositories!: (workspace: string, options?: any) => Promise<any>;
+  getRepository!: (workspace: string, repo: string) => Promise<any>;
+  listBranches!: (workspace: string, repo: string, options?: any) => Promise<any>;
+
+  // ── Comment read ──────────────────────────────────────────────────────────
+  getPullRequestComments!: (workspace: string, repo: string, prId: number, options?: any) => Promise<any>;
+  getPullRequestComment!: (workspace: string, repo: string, prId: number, commentId: number) => Promise<any>;
+
+  // ── Comment / task write ──────────────────────────────────────────────────
+  addPullRequestComment!: (workspace: string, repo: string, prId: number, options: AddCommentOptions) => Promise<any>;
+  updatePullRequestComment!: (workspace: string, repo: string, prId: number, commentId: number, options: AddCommentOptions) => Promise<any>;
+  deletePullRequestComment!: (workspace: string, repo: string, prId: number, commentId: number) => Promise<any>;
+  createPullRequestTask!: (workspace: string, repo: string, prId: number, options: CreateTaskOptions) => Promise<any>;
+  updatePullRequestTask!: (workspace: string, repo: string, prId: number, taskId: number, options: UpdateTaskOptions) => Promise<any>;
+  deletePullRequestTask!: (workspace: string, repo: string, prId: number, taskId: number) => Promise<any>;
+
+  constructor(options: ClientOptions = {}) {
+    this.pr = new PullRequestClient(options);
+    this.repo = new RepositoryClient(options);
+    this.comment = new CommentClient(options);
+
+    // Bind all PR methods
+    this.listPullRequests = this.pr.listPullRequests.bind(this.pr);
+    this.getPullRequest = this.pr.getPullRequest.bind(this.pr);
+    this.getPullRequestActivities = this.pr.getPullRequestActivities.bind(this.pr);
+    this.getPullRequestChanges = this.pr.getPullRequestChanges.bind(this.pr);
+    this.getPullRequestCommits = this.pr.getPullRequestCommits.bind(this.pr);
+    this.getPullRequestDiff = this.pr.getPullRequestDiff.bind(this.pr);
+    this.getPullRequestPatch = this.pr.getPullRequestPatch.bind(this.pr);
+    this.getPullRequestParticipants = this.pr.getPullRequestParticipants.bind(this.pr);
+    this.getPullRequestReviewers = this.pr.getPullRequestReviewers.bind(this.pr);
+    this.getPullRequestStatus = this.pr.getPullRequestStatus.bind(this.pr);
+    this.getPullRequestTasks = this.pr.getPullRequestTasks.bind(this.pr);
+    this.getPullRequestTaskCount = this.pr.getPullRequestTaskCount.bind(this.pr);
+    this.getFullPullRequest = this.pr.getFullPullRequest.bind(this.pr);
+
+    this.createPullRequest = this.pr.createPullRequest.bind(this.pr);
+    this.updatePullRequest = this.pr.updatePullRequest.bind(this.pr);
+    this.mergePullRequest = this.pr.mergePullRequest.bind(this.pr);
+    this.declinePullRequest = this.pr.declinePullRequest.bind(this.pr);
+    this.approvePullRequest = this.pr.approvePullRequest.bind(this.pr);
+    this.unapprovePullRequest = this.pr.unapprovePullRequest.bind(this.pr);
+    this.requestChangesPullRequest = this.pr.requestChangesPullRequest.bind(this.pr);
+    this.removeRequestChangesPullRequest = this.pr.removeRequestChangesPullRequest.bind(this.pr);
+
+    // Bind all repo methods
+    this.listWorkspaces = this.repo.listWorkspaces.bind(this.repo);
+    this.listRepositories = this.repo.listRepositories.bind(this.repo);
+    this.getRepository = this.repo.getRepository.bind(this.repo);
+    this.listBranches = this.repo.listBranches.bind(this.repo);
+
+    // Bind all comment methods
+    this.getPullRequestComments = this.comment.getPullRequestComments.bind(this.comment);
+    this.getPullRequestComment = this.comment.getPullRequestComment.bind(this.comment);
+
+    this.addPullRequestComment = this.comment.addPullRequestComment.bind(this.comment);
+    this.updatePullRequestComment = this.comment.updatePullRequestComment.bind(this.comment);
+    this.deletePullRequestComment = this.comment.deletePullRequestComment.bind(this.comment);
+    this.createPullRequestTask = this.comment.createPullRequestTask.bind(this.comment);
+    this.updatePullRequestTask = this.comment.updatePullRequestTask.bind(this.comment);
+    this.deletePullRequestTask = this.comment.deletePullRequestTask.bind(this.comment);
   }
 
-  private async initializeClient(options: BitbucketClientOptions): Promise<void> {
-    try {
-      const config = await this.loadTokenConfig();
-      this.tokenSource = config.source;
-
-      this.client = axios.create({
-        baseURL: 'https://api.bitbucket.org/2.0',
-        headers: {
-          'Content-Type': 'application/json'
-        },
-        auth: {
-          username: config.email,
-          password: config.token
-        },
-        timeout: options.timeout || 30000,
-        maxRedirects: 5
-      });
-
-      // Request interceptor for token refresh and logging
-      this.client.interceptors.request.use(config => {
-        config.headers['User-Agent'] = `Bitbucket-MCP-Server/${this.getVersion()}`;
-        return config;
-      });
-
-      // Response interceptor for rate limiting and errors
-      this.client.interceptors.response.use(
-        response => response,
-        async (error: AxiosError) => {
-          await this.handleResponseError(error);
-        }
-      );
-
-      this.initialized = true;
-    } catch (error) {
-      console.error('Failed to load token configuration:', error);
-      throw new Error('Unable to initialize Bitbucket client - check token configuration');
-    }
-  }
-
-  private async ensureInitialized(): Promise<void> {
-    if (!this.initialized) {
-      // Wait for initialization to complete
-      await new Promise(resolve => {
-        const checkInit = () => {
-          if (this.initialized) {
-            resolve(void 0);
-          } else {
-            setTimeout(checkInit, 10);
-          }
-        };
-        checkInit();
-      });
-    }
-  }
-
-  private async loadTokenConfig(): Promise<TokenConfig> {
-    return TokenConfigLoader.load();
-  }
-
-  private getVersion(): string {
-    try {
-      // Use synchronous fs for version lookup - no async needed
-      const fs = require('fs');
-      const path = require('path');
-      const pkgPath = path.join(process.cwd(), 'package.json');
-      if (fs.existsSync(pkgPath)) {
-          const pkg = JSON.parse(fs.readFileSync(pkgPath, 'utf-8'));
-          return pkg.version || '1.0.0';
-        }
-        return '1.0.0';
-    } catch {
-      return '1.0.0';
-    }
-  }
-
-  private async handleResponseError(error: AxiosError): Promise<void> {
-    const status = error.response?.status;
-
-    if (status === 401) {
-      // Authentication error - provide detailed logging
-      const data = error.response?.data;
-      console.error('🔐 Bitbucket API Authentication Error (401):');
-      console.error(`   Token source: ${this.tokenSource || 'unknown'}`);
-      console.error(`   Request URL: ${error.config?.url}`);
-      console.error(`   Request method: ${error.config?.method?.toUpperCase()}`);
-
-      if (typeof data === 'object' && data !== null) {
-        console.error('   Response data:', JSON.stringify(data, null, 2));
-      } else if (data) {
-        console.error(`   Response data: ${data}`);
-      }
-
-      // Check if token might be expired or malformed
-      const authHeader = error.config?.headers?.Authorization;
-      if (typeof authHeader === 'string') {
-        const token = authHeader.replace('Bearer ', '');
-        const tokenLength = token.length;
-        const isJWT = token.includes('.');
-        console.error(`   Token info: length=${tokenLength}, appears to be JWT=${isJWT}`);
-      }
-
-      console.error('   Possible causes:');
-      console.error('     - Token expired');
-      console.error('     - Token lacks required permissions (needs repository read access)');
-      console.error('     - Token is malformed or corrupted');
-      console.error('     - Repository/workspace access denied');
-    } else if (status === 403) {
-      // Forbidden - similar to auth but different permissions
-      console.error('🚫 Bitbucket API Forbidden Error (403):');
-      console.error(`   Token source: ${this.tokenSource || 'unknown'}`);
-      console.error(`   Request URL: ${error.config?.url}`);
-      console.error('   Possible causes:');
-      console.error('     - Token lacks permission to access this repository');
-      console.error('     - Repository is private and token has insufficient scope');
-    } else if (status === 429) {
-      // Rate limited - wait and retry
-      const retryAfter = error.response?.headers['retry-after'];
-      const delay = retryAfter ? parseInt(retryAfter, 10) * 1000 : 5000;
-
-      console.log(`Rate limited. Retrying in ${delay}ms...`);
-      await this.sleep(delay);
-    } else if (status && status >= 400 && status < 500) {
-      // Other client error - log but don't retry
-      const data = error.response?.data;
-      let message: string;
-      if (typeof data === 'object' && data !== null && 'message' in data) {
-        message = String(data.message);
-      } else {
-        message = `Client error ${status}`;
-      }
-      console.error(`Bitbucket API ${status}: ${message}`);
-    } else if (status && status >= 500) {
-      // Server error - could implement exponential backoff retry
-      console.warn(`Server error ${status}, will retry...`);
-    }
-
-    throw error;
-  }
-
-  private sleep(ms: number): Promise<void> {
-    return new Promise(resolve => setTimeout(resolve, ms));
-  }
-
-  /**
-   * Validate the authentication token by making a test API call.
-   */
   async validateToken(): Promise<{ valid: boolean; message: string }> {
-    await this.ensureInitialized();
-
     try {
-      // Make a simple API call to test authentication
+      await this.repo.listWorkspaces({ pagelen: 1 });
-      const response = await this.client.get('/user');
       return { valid: true, message: 'Token is valid' };
     } catch (error: any) {
-      const status = error.response?.status;
+      const status = error?.response?.status ?? error?.cause?.response?.status;
-      if (status === 401) {
+      if (status === 401) return { valid: false, message: 'Token is invalid or expired' };
-        return { valid: false, message: 'Token is invalid or expired' };
+      if (status === 403) return { valid: false, message: 'Token lacks required permissions' };
-      } else if (status === 403) {
+      return { valid: false, message: `Token validation failed: ${error?.message || error}` };
-        return { valid: false, message: 'Token lacks required permissions' };
-      } else {
-        return { valid: false, message: `Token validation failed: ${this.formatError(error)}` };
-      }
     }
   }
-
-  /**
-   * List pull requests in a repository.
-   */
-  async listPullRequests(
-    workspace: string,
-    repoSlug: string,
-    options?: {
-      state?: 'open' | 'closed' | 'all';
-      author?: string;
-      reviewer?: string;
-      since?: string;
-    }
-  ): Promise<any[]> {
-    await this.ensureInitialized();
-
-    const params: Record<string, any> = {};
-
-    if (options?.state) params.state = options.state;
-    if (options?.author) params.author = options.author;
-    if (options?.reviewer) params.reviewer = options.reviewer;
-    if (options?.since) params.since = options.since;
-
-    try {
-      const response = await this.client.get(
-        `/repositories/${workspace}/${repoSlug}/pullrequests`,
-        { params }
-      );
-
-      return response.data.values || [];
-    } catch (error) {
-      throw new Error(`Failed to list pull requests: ${this.formatError(error)}`);
-    }
-  }
-
-  /**
-   * Get a specific pull request.
-   */
-  async getPullRequest(
-    workspace: string,
-    repoSlug: string,
-    prId: number
-  ): Promise<any> {
-    await this.ensureInitialized();
-
-    try {
-      const response = await this.client.get(
-        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}`
-      );
-      return response.data;
-    } catch (error) {
-      throw new Error(`Failed to get pull request: ${this.formatError(error)}`);
-    }
-  }
-
-  /**
-   * Get pull request activities (events/actions on the PR).
-   */
-  async getPullRequestActivities(
-    workspace: string,
-    repoSlug: string,
-    prId: number,
-    options?: {
-      limit?: number;
-      start?: number;
-    }
-  ): Promise<any> {
-    await this.ensureInitialized();
-
-    try {
-      const params: Record<string, any> = {};
-      if (options?.limit) params.limit = options.limit;
-      if (options?.start) params.start = options.start;
-
-      const response = await this.client.get(
-        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/activity`,
-        { params }
-      );
-      return response.data;
-    } catch (error) {
-      throw new Error(`Failed to get pull request activities: ${this.formatError(error)}`);
-    }
-  }
-
-  /**
-   * Get pull request changes (files modified in the PR).
-   */
-  async getPullRequestChanges(
-    workspace: string,
-    repoSlug: string,
-    prId: number,
-    options?: {
-      limit?: number;
-      start?: number;
-    }
-  ): Promise<any> {
-    await this.ensureInitialized();
-
-    try {
-      const params: Record<string, any> = {};
-      if (options?.limit) params.limit = options.limit;
-      if (options?.start) params.start = options.start;
-
-      const prResponse = await this.client.get(
-        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}`
-      );
-      const sourceHash = prResponse.data.source?.commit?.hash;
-      const destHash = prResponse.data.destination?.commit?.hash;
-
-      if (sourceHash && destHash) {
-        const changesPath = `/repositories/${workspace}/${repoSlug}/diffstat/${sourceHash}..${destHash}`;
-        const response = await this.client.get(changesPath, { params });
-        return response.data;
-      }
-
-      throw new Error('Could not determine source and destination commits for PR');
-    } catch (error) {
-      throw new Error(`Failed to get pull request changes: ${this.formatError(error)}`);
-    }
-  }
-
-  /**
-   * Get pull request comments.
-   */
-  async getPullRequestComments(
-    workspace: string,
-    repoSlug: string,
-    prId: number,
-    options?: {
-      limit?: number;
-      start?: number;
-    }
-  ): Promise<any> {
-    await this.ensureInitialized();
-
-    try {
-      const params: Record<string, any> = {};
-      if (options?.limit) params.limit = options.limit;
-      if (options?.start) params.start = options.start;
-
-      const response = await this.client.get(
-        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/comments`,
-        { params }
-      );
-      return response.data;
-    } catch (error) {
-      throw new Error(`Failed to get pull request comments: ${this.formatError(error)}`);
-    }
-  }
-
-  /**
-   * Get a specific pull request comment.
-   */
-  async getPullRequestComment(
-    workspace: string,
-    repoSlug: string,
-    prId: number,
-    commentId: number
-  ): Promise<any> {
-    await this.ensureInitialized();
-
-    try {
-      const response = await this.client.get(
-        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/comments/${commentId}`
-      );
-      return response.data;
-    } catch (error) {
-      throw new Error(`Failed to get pull request comment: ${this.formatError(error)}`);
-    }
-  }
-
-  /**
-   * Get commits included in a pull request.
-   */
-  async getPullRequestCommits(
-    workspace: string,
-    repoSlug: string,
-    prId: number,
-    options?: {
-      limit?: number;
-      start?: number;
-    }
-  ): Promise<any> {
-    await this.ensureInitialized();
-
-    try {
-      const params: Record<string, any> = {};
-      if (options?.limit) params.limit = options.limit;
-      if (options?.start) params.start = options.start;
-
-      const response = await this.client.get(
-        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/commits`,
-        { params }
-      );
-      return response.data;
-    } catch (error) {
-      throw new Error(`Failed to get pull request commits: ${this.formatError(error)}`);
-    }
-  }
-
-  /**
-   * Get diff for a pull request.
-   */
-  async getPullRequestDiff(
-    workspace: string,
-    repoSlug: string,
-    prId: number,
-    options?: {
-      context?: number;
-      path?: string;
-      whitespace?: 'ignore-all' | 'ignore-changing' | 'ignore-eol' | 'show-all';
-    }
-  ): Promise<any> {
-    await this.ensureInitialized();
-
-    try {
-      const params: Record<string, any> = {};
-      if (options?.context) params.context = options.context;
-      if (options?.whitespace) params.whitespace = options.whitespace;
-
-      if (options?.path) {
-        const response = await this.client.get(
-          `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/diff/${options.path}`,
-          { params, responseType: 'text' }
-        );
-        return response.data;
-      }
-
-      const prResponse = await this.client.get(
-        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}`
-      );
-      const sourceHash = prResponse.data.source?.commit?.hash;
-      const destHash = prResponse.data.destination?.commit?.hash;
-
-      if (sourceHash && destHash) {
-        const diffPath = `/repositories/${workspace}/${repoSlug}/diff/${sourceHash}..${destHash}`;
-        const response = await this.client.get(diffPath, { params, responseType: 'text' });
-        return response.data;
-      }
-
-      throw new Error('Could not determine source and destination commits for PR');
-    } catch (error) {
-      throw new Error(`Failed to get pull request diff: ${this.formatError(error)}`);
-    }
-  }
-
-  /**
-   * Get raw patch for a pull request.
-   */
-  async getPullRequestPatch(
-    workspace: string,
-    repoSlug: string,
-    prId: number
-  ): Promise<any> {
-    await this.ensureInitialized();
-
-    try {
-      const prResponse = await this.client.get(
-        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}`
-      );
-      const sourceHash = prResponse.data.source?.commit?.hash;
-      const destHash = prResponse.data.destination?.commit?.hash;
-
-      if (sourceHash && destHash) {
-        const patchPath = `/repositories/${workspace}/${repoSlug}/diff/${sourceHash}..${destHash}`;
-        const response = await this.client.get(patchPath, { responseType: 'text' });
-        return { patch: response.data };
-      }
-
-      throw new Error('Could not determine source and destination commits for PR');
-    } catch (error) {
-      throw new Error(`Failed to get pull request patch: ${this.formatError(error)}`);
-    }
-  }
-
-  /**
-   * Get participants of a pull request.
-   */
-  async getPullRequestParticipants(
-    workspace: string,
-    repoSlug: string,
-    prId: number
-  ): Promise<any> {
-    await this.ensureInitialized();
-
-    try {
-      const response = await this.client.get(
-        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}`
-      );
-      return response.data.participants || [];
-    } catch (error) {
-      throw new Error(`Failed to get pull request participants: ${this.formatError(error)}`);
-    }
-  }
-
-  /**
-   * Get reviewers of a pull request.
-   */
-  async getPullRequestReviewers(
-    workspace: string,
-    repoSlug: string,
-    prId: number
-  ): Promise<any> {
-    await this.ensureInitialized();
-
-    try {
-      const response = await this.client.get(
-        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}`
-      );
-      return response.data.reviewers || [];
-    } catch (error) {
-      throw new Error(`Failed to get pull request reviewers: ${this.formatError(error)}`);
-    }
-  }
-
-  /**
-   * Get status of a pull request (merged, open, declined).
-   */
-  async getPullRequestStatus(
-    workspace: string,
-    repoSlug: string,
-    prId: number
-  ): Promise<any> {
-    await this.ensureInitialized();
-
-    try {
-      const response = await this.client.get(
-        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}`
-      );
-      const pr = response.data;
-      return {
-        id: pr.id,
-        title: pr.title,
-        state: pr.state,
-        status: pr.status,
-        author: pr.author,
-        source_branch: pr.source?.branch?.name,
-        destination_branch: pr.destination?.branch?.name,
-        created_on: pr.created_on,
-        updated_on: pr.updated_on,
-        closed_on: pr.closed_on,
-        merge_commit: pr.merge_commit
-      };
-    } catch (error) {
-      throw new Error(`Failed to get pull request status: ${this.formatError(error)}`);
-    }
-  }
-
-  /**
-   * Get tasks associated with a pull request.
-   */
-  async getPullRequestTasks(
-    workspace: string,
-    repoSlug: string,
-    prId: number
-  ): Promise<any> {
-    await this.ensureInitialized();
-
-    try {
-      const response = await this.client.get(
-        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/tasks`
-      );
-      return response.data;
-    } catch (error) {
-      throw new Error(`Failed to get pull request tasks: ${this.formatError(error)}`);
-    }
-  }
-
-  /**
-   * Get task count for a pull request.
-   */
-  async getPullRequestTaskCount(
-    workspace: string,
-    repoSlug: string,
-    prId: number
-  ): Promise<any> {
-    await this.ensureInitialized();
-
-    try {
-      const response = await this.client.get(
-        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/tasks`
-      );
-      const tasks = response.data;
-      return { count: tasks.values?.length || 0 };
-    } catch (error) {
-      throw new Error(`Failed to get pull request task count: ${this.formatError(error)}`);
-    }
-  }
-
-  /**
-   * Get the full raw pull request with all details.
-   */
-  async getFullPullRequest(
-    workspace: string,
-    repoSlug: string,
-    prId: number
-  ): Promise<any> {
-    await this.ensureInitialized();
-
-    try {
-      const response = await this.client.get(
-        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}`,
-        {
-          params: {
-            fields: '+*'
-          }
-        }
-      );
-      return response.data;
-    } catch (error) {
-      throw new Error(`Failed to get full pull request: ${this.formatError(error)}`);
-    }
-  }
-
-  private formatError(error: any): string {
-    if (error?.response?.status) {
-      return `HTTP ${error.response.status}: ${error.message}`;
-    }
-    return error?.message || 'Unknown error';
-  }
 }
 
 export default BitbucketClient;

src/clients/base-client.ts

@@ -0,0 +1,102 @@
+import axios, { AxiosInstance, AxiosError } from 'axios';
+import { TokenConfigLoader } from '../config.js';
+
+export interface ClientOptions {
+  timeout?: number;
+}
+
+export class BaseClient {
+  protected axiosInstance!: AxiosInstance;
+  private tokenSource: string | null = null;
+  private _initialized = false;
+  private _initPromise: Promise<void> | null = null;
+
+  constructor(options: ClientOptions = {}) {
+    this._initPromise = this._init(options);
+  }
+
+  private async _init(options: ClientOptions): Promise<void> {
+    try {
+      const config = await TokenConfigLoader.load();
+      this.tokenSource = config.source;
+      this.axiosInstance = axios.create({
+        baseURL: 'https://api.bitbucket.org/2.0',
+        headers: { 'Content-Type': 'application/json' },
+        auth: { username: config.email, password: config.token },
+        timeout: options.timeout || 30000,
+        maxRedirects: 5,
+      });
+      this.axiosInstance.interceptors.request.use(cfg => {
+        cfg.headers['User-Agent'] = `Bitbucket-MCP-Server/${this._getVersion()}`;
+        return cfg;
+      });
+      this.axiosInstance.interceptors.response.use(
+        r => r,
+        (error: AxiosError) => this._handleResponseError(error),
+      );
+      this._initialized = true;
+    } catch (error) {
+      throw new Error(`Unable to initialize Bitbucket client: ${error}`);
+    }
+  }
+
+  protected async ensureInitialized(): Promise<void> {
+    if (this._initialized) return;
+    await this._initPromise;
+  }
+
+  private async _handleResponseError(error: AxiosError): Promise<never> {
+    const status = error.response?.status;
+    if (status === 401) {
+      console.error('Bitbucket API Authentication Error (401)');
+      console.error(`   Token source: ${this.tokenSource || 'unknown'}`);
+      console.error(`   URL: ${error.config?.url}`);
+      console.error(`   Method: ${error.config?.method?.toUpperCase()}`);
+      const data = error.response?.data;
+      if (typeof data === 'object' && data !== null) {
+        console.error('   Response:', JSON.stringify(data, null, 2));
+      } else if (data) {
+        console.error(`   Response: ${data}`);
+      }
+    } else if (status === 403) {
+      console.error('Bitbucket API Forbidden (403)');
+      console.error(`   Token source: ${this.tokenSource || 'unknown'}`);
+      console.error(`   URL: ${error.config?.url}`);
+    } else if (status === 429) {
+      console.warn(`Rate limited (429). URL: ${error.config?.url}`);
+    }
+    throw error;
+  }
+
+  private _sleep(ms: number): Promise<void> {
+    return new Promise(resolve => setTimeout(resolve, ms));
+  }
+
+  private _getVersion(): string {
+    try {
+      // eslint-disable-next-line @typescript-eslint/no-require-imports
+      const fs = require('fs');
+      // eslint-disable-next-line @typescript-eslint/no-require-imports
+      const path = require('path');
+      const pkgPath = path.join(process.cwd(), 'package.json');
+      if (fs.existsSync(pkgPath)) {
+        const pkg = JSON.parse(fs.readFileSync(pkgPath, 'utf-8'));
+        return pkg.version || '1.0.0';
+      }
+      return '1.0.0';
+    } catch {
+      return '1.0.0';
+    }
+  }
+
+  protected formatError(error: unknown): string {
+    if (error && typeof error === 'object' && 'response' in error) {
+      const axiosError = error as { response?: { status?: number }; message?: string };
+      if (axiosError.response?.status) {
+        return `HTTP ${axiosError.response.status}: ${axiosError.message || 'Unknown error'}`;
+      }
+    }
+    if (error instanceof Error) return error.message;
+    return String(error) || 'Unknown error';
+  }
+}

src/clients/comment-client.ts

@@ -0,0 +1,154 @@
+import { BaseClient, ClientOptions } from './base-client.js';
+
+export interface AddCommentOptions {
+  content: string;
+  inline?: { path: string; to: number };
+  parent_id?: number;
+}
+
+export interface CreateTaskOptions {
+  content: string;
+  comment_id?: number;
+}
+
+export interface UpdateTaskOptions {
+  content?: string;
+  state?: 'RESOLVED' | 'UNRESOLVED';
+}
+
+export class CommentClient extends BaseClient {
+  constructor(options: ClientOptions = {}) {
+    super(options);
+  }
+
+  async getPullRequestComments(
+    workspace: string, repoSlug: string, prId: number,
+    options?: { limit?: number; start?: number },
+  ): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const params: Record<string, any> = {};
+      if (options?.limit) params.limit = options.limit;
+      if (options?.start !== undefined) params.start = options.start;
+      const response = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/comments`,
+        { params },
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to get comments: ${this.formatError(error)}`);
+    }
+  }
+
+  async getPullRequestComment(
+    workspace: string, repoSlug: string, prId: number, commentId: number,
+  ): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const response = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/comments/${commentId}`,
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to get comment: ${this.formatError(error)}`);
+    }
+  }
+
+  async addPullRequestComment(
+    workspace: string, repoSlug: string, prId: number, opts: AddCommentOptions,
+  ): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const body: Record<string, any> = { content: { raw: opts.content } };
+      if (opts.inline) body.inline = opts.inline;
+      if (opts.parent_id !== undefined) body.parent = { id: opts.parent_id };
+      const response = await this.axiosInstance.post(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/comments`,
+        body,
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to add comment: ${this.formatError(error)}`);
+    }
+  }
+
+  async updatePullRequestComment(
+    workspace: string, repoSlug: string, prId: number, commentId: number,
+    opts: { content: string },
+  ): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const response = await this.axiosInstance.put(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/comments/${commentId}`,
+        { content: { raw: opts.content } },
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to update comment: ${this.formatError(error)}`);
+    }
+  }
+
+  async deletePullRequestComment(
+    workspace: string, repoSlug: string, prId: number, commentId: number,
+  ): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      await this.axiosInstance.delete(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/comments/${commentId}`,
+      );
+      return { success: true };
+    } catch (error) {
+      throw new Error(`Failed to delete comment: ${this.formatError(error)}`);
+    }
+  }
+
+  async createPullRequestTask(
+    workspace: string, repoSlug: string, prId: number, opts: CreateTaskOptions,
+  ): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const body: Record<string, any> = { content: { raw: opts.content } };
+      if (opts.comment_id !== undefined) body.comment = { id: opts.comment_id };
+      const response = await this.axiosInstance.post(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/tasks`,
+        body,
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to create task: ${this.formatError(error)}`);
+    }
+  }
+
+  async updatePullRequestTask(
+    workspace: string, repoSlug: string, prId: number, taskId: number,
+    opts: UpdateTaskOptions,
+  ): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const body: Record<string, any> = {};
+      if (opts.content !== undefined) body.content = { raw: opts.content };
+      if (opts.state !== undefined) body.state = opts.state;
+      const response = await this.axiosInstance.put(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/tasks/${taskId}`,
+        body,
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to update task: ${this.formatError(error)}`);
+    }
+  }
+
+  async deletePullRequestTask(
+    workspace: string, repoSlug: string, prId: number, taskId: number,
+  ): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      await this.axiosInstance.delete(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/tasks/${taskId}`,
+      );
+      return { success: true };
+    } catch (error) {
+      throw new Error(`Failed to delete task: ${this.formatError(error)}`);
+    }
+  }
+}

src/clients/pull-request-client.ts

@@ -0,0 +1,390 @@
+import { BaseClient, ClientOptions } from './base-client.js';
+
+export interface CreatePROptions {
+  title: string;
+  source_branch: string;
+  destination_branch: string;
+  description?: string;
+  reviewers?: string[];
+  close_source_branch?: boolean;
+}
+
+export interface UpdatePROptions {
+  title?: string;
+  description?: string;
+  reviewers?: string[];
+  destination_branch?: string;
+}
+
+export interface MergePROptions {
+  merge_strategy?: 'merge_commit' | 'squash' | 'fast_forward';
+  commit_message?: string;
+  close_source_branch?: boolean;
+}
+
+export class PullRequestClient extends BaseClient {
+  constructor(options: ClientOptions = {}) {
+    super(options);
+  }
+
+  async listPullRequests(
+    workspace: string,
+    repoSlug: string,
+    options?: { state?: 'OPEN' | 'MERGED' | 'DECLINED' | 'SUPERSEDED'; author?: string; reviewer?: string; since?: string },
+  ): Promise<any[]> {
+    await this.ensureInitialized();
+    try {
+      const params: Record<string, any> = {};
+      if (options?.state) params.state = options.state;
+      if (options?.author) params.author = options.author;
+      if (options?.reviewer) params.reviewer = options.reviewer;
+      if (options?.since) params.since = options.since;
+      const response = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}/pullrequests`,
+        { params },
+      );
+      return response.data.values || [];
+    } catch (error) {
+      throw new Error(`Failed to list pull requests: ${this.formatError(error)}`);
+    }
+  }
+
+  async getPullRequest(workspace: string, repoSlug: string, prId: number): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const response = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}`,
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to get pull request: ${this.formatError(error)}`);
+    }
+  }
+
+  async getPullRequestActivities(
+    workspace: string, repoSlug: string, prId: number,
+    options?: { limit?: number; start?: number },
+  ): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const params: Record<string, any> = {};
+      if (options?.limit) params.limit = options.limit;
+      if (options?.start !== undefined) params.start = options.start;
+      const response = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/activity`,
+        { params },
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to get activities: ${this.formatError(error)}`);
+    }
+  }
+
+  async getPullRequestChanges(
+    workspace: string, repoSlug: string, prId: number,
+    options?: { limit?: number; start?: number },
+  ): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const params: Record<string, any> = {};
+      if (options?.limit) params.limit = options.limit;
+      if (options?.start !== undefined) params.start = options.start;
+      const prResponse = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}`,
+      );
+      const sourceHash = prResponse.data.source?.commit?.hash;
+      const destHash = prResponse.data.destination?.commit?.hash;
+      if (!sourceHash || !destHash) {
+        throw new Error('Could not determine source and destination commits');
+      }
+      const response = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}/diffstat/${sourceHash}..${destHash}`,
+        { params },
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to get changes: ${this.formatError(error)}`);
+    }
+  }
+
+  async getPullRequestCommits(
+    workspace: string, repoSlug: string, prId: number,
+    options?: { limit?: number; start?: number },
+  ): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const params: Record<string, any> = {};
+      if (options?.limit) params.limit = options.limit;
+      if (options?.start !== undefined) params.start = options.start;
+      const response = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/commits`,
+        { params },
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to get commits: ${this.formatError(error)}`);
+    }
+  }
+
+  async getPullRequestDiff(
+    workspace: string, repoSlug: string, prId: number,
+    options?: { context?: number; path?: string; whitespace?: string },
+  ): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const params: Record<string, any> = {};
+      if (options?.context) params.context = options.context;
+      if (options?.whitespace) params.whitespace = options.whitespace;
+      if (options?.path) {
+        const response = await this.axiosInstance.get(
+          `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/diff/${options.path}`,
+          { params, responseType: 'text' },
+        );
+        return response.data;
+      }
+      const prResponse = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}`,
+      );
+      const sourceHash = prResponse.data.source?.commit?.hash;
+      const destHash = prResponse.data.destination?.commit?.hash;
+      if (!sourceHash || !destHash) {
+        throw new Error('Could not determine source and destination commits');
+      }
+      const response = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}/diff/${sourceHash}..${destHash}`,
+        { params, responseType: 'text' },
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to get diff: ${this.formatError(error)}`);
+    }
+  }
+
+  async getPullRequestPatch(workspace: string, repoSlug: string, prId: number): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const prResponse = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}`,
+      );
+      const sourceHash = prResponse.data.source?.commit?.hash;
+      const destHash = prResponse.data.destination?.commit?.hash;
+      if (!sourceHash || !destHash) {
+        throw new Error('Could not determine source and destination commits');
+      }
+      const response = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}/diff/${sourceHash}..${destHash}`,
+        { responseType: 'text' },
+      );
+      return { patch: response.data };
+    } catch (error) {
+      throw new Error(`Failed to get patch: ${this.formatError(error)}`);
+    }
+  }
+
+  async getPullRequestParticipants(workspace: string, repoSlug: string, prId: number): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const response = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}`,
+      );
+      return response.data.participants || [];
+    } catch (error) {
+      throw new Error(`Failed to get participants: ${this.formatError(error)}`);
+    }
+  }
+
+  async getPullRequestReviewers(workspace: string, repoSlug: string, prId: number): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const response = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}`,
+      );
+      return response.data.reviewers || [];
+    } catch (error) {
+      throw new Error(`Failed to get reviewers: ${this.formatError(error)}`);
+    }
+  }
+
+  async getPullRequestStatus(workspace: string, repoSlug: string, prId: number): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const response = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}`,
+      );
+      const pr = response.data;
+      return {
+        id: pr.id, title: pr.title, state: pr.state, status: pr.status,
+        author: pr.author,
+        source_branch: pr.source?.branch?.name,
+        destination_branch: pr.destination?.branch?.name,
+        created_on: pr.created_on, updated_on: pr.updated_on,
+        closed_on: pr.closed_on, merge_commit: pr.merge_commit,
+      };
+    } catch (error) {
+      throw new Error(`Failed to get status: ${this.formatError(error)}`);
+    }
+  }
+
+  async getPullRequestTasks(workspace: string, repoSlug: string, prId: number): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const response = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/tasks`,
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to get tasks: ${this.formatError(error)}`);
+    }
+  }
+
+  async getPullRequestTaskCount(workspace: string, repoSlug: string, prId: number): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const response = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/tasks`,
+      );
+      return { count: response.data.size ?? response.data.values?.length ?? 0 };
+    } catch (error) {
+      throw new Error(`Failed to get task count: ${this.formatError(error)}`);
+    }
+  }
+
+  async getFullPullRequest(workspace: string, repoSlug: string, prId: number): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const response = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}`,
+        { params: { fields: '+*' } },
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to get full PR: ${this.formatError(error)}`);
+    }
+  }
+
+  async createPullRequest(workspace: string, repoSlug: string, opts: CreatePROptions): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const body: Record<string, any> = {
+        title: opts.title,
+        source: { branch: { name: opts.source_branch } },
+        destination: { branch: { name: opts.destination_branch } },
+      };
+      if (opts.description !== undefined) body.description = opts.description;
+      if (opts.close_source_branch !== undefined) body.close_source_branch = opts.close_source_branch;
+      if (opts.reviewers?.length) {
+        body.reviewers = opts.reviewers.map(r => ({ uuid: r }));
+      }
+      const response = await this.axiosInstance.post(
+        `/repositories/${workspace}/${repoSlug}/pullrequests`,
+        body,
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to create pull request: ${this.formatError(error)}`);
+    }
+  }
+
+  async updatePullRequest(
+    workspace: string, repoSlug: string, prId: number, opts: UpdatePROptions,
+  ): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const body: Record<string, any> = {};
+      if (opts.title !== undefined) body.title = opts.title;
+      if (opts.description !== undefined) body.description = opts.description;
+      if (opts.destination_branch !== undefined) {
+        body.destination = { branch: { name: opts.destination_branch } };
+      }
+      if (opts.reviewers !== undefined) {
+        body.reviewers = opts.reviewers.map(r => ({ uuid: r }));
+      }
+      const response = await this.axiosInstance.put(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}`,
+        body,
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to update pull request: ${this.formatError(error)}`);
+    }
+  }
+
+  async mergePullRequest(
+    workspace: string, repoSlug: string, prId: number, opts: MergePROptions = {},
+  ): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const body: Record<string, any> = {};
+      if (opts.merge_strategy) body.merge_strategy = opts.merge_strategy;
+      if (opts.commit_message) body.message = opts.commit_message;
+      if (opts.close_source_branch !== undefined) body.close_source_branch = opts.close_source_branch;
+      const response = await this.axiosInstance.post(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/merge`,
+        body,
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to merge pull request: ${this.formatError(error)}`);
+    }
+  }
+
+  async declinePullRequest(workspace: string, repoSlug: string, prId: number): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const response = await this.axiosInstance.post(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/decline`,
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to decline pull request: ${this.formatError(error)}`);
+    }
+  }
+
+  async approvePullRequest(workspace: string, repoSlug: string, prId: number): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const response = await this.axiosInstance.post(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/approve`,
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to approve pull request: ${this.formatError(error)}`);
+    }
+  }
+
+  async unapprovePullRequest(workspace: string, repoSlug: string, prId: number): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      await this.axiosInstance.delete(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/approve`,
+      );
+      return { success: true };
+    } catch (error) {
+      throw new Error(`Failed to unapprove pull request: ${this.formatError(error)}`);
+    }
+  }
+
+  async requestChangesPullRequest(workspace: string, repoSlug: string, prId: number): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const response = await this.axiosInstance.post(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/request-changes`,
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to request changes: ${this.formatError(error)}`);
+    }
+  }
+
+  async removeRequestChangesPullRequest(workspace: string, repoSlug: string, prId: number): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      await this.axiosInstance.delete(
+        `/repositories/${workspace}/${repoSlug}/pullrequests/${prId}/request-changes`,
+      );
+      return { success: true };
+    } catch (error) {
+      throw new Error(`Failed to remove request-changes: ${this.formatError(error)}`);
+    }
+  }
+}

src/clients/repository-client.ts

@@ -0,0 +1,73 @@
+import { BaseClient, ClientOptions } from './base-client.js';
+
+export class RepositoryClient extends BaseClient {
+  constructor(options: ClientOptions = {}) {
+    super(options);
+  }
+
+  async listWorkspaces(options?: { page?: number; pagelen?: number }): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const params: Record<string, any> = {};
+      if (options?.page) params.page = options.page;
+      if (options?.pagelen) params.pagelen = options.pagelen;
+      const response = await this.axiosInstance.get('/user/workspaces', { params });
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to list workspaces: ${this.formatError(error)}`);
+    }
+  }
+
+  async listRepositories(
+    workspace: string,
+    options?: { role?: 'member' | 'contributor' | 'owner'; page?: number; pagelen?: number },
+  ): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const params: Record<string, any> = {};
+      if (options?.role) params.role = options.role;
+      if (options?.page) params.page = options.page;
+      if (options?.pagelen) params.pagelen = options.pagelen;
+      const response = await this.axiosInstance.get(
+        `/repositories/${workspace}`,
+        { params },
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to list repositories: ${this.formatError(error)}`);
+    }
+  }
+
+  async getRepository(workspace: string, repoSlug: string): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const response = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}`,
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to get repository: ${this.formatError(error)}`);
+    }
+  }
+
+  async listBranches(
+    workspace: string,
+    repoSlug: string,
+    options?: { filter_by_name?: string; page?: number; pagelen?: number },
+  ): Promise<any> {
+    await this.ensureInitialized();
+    try {
+      const params: Record<string, any> = {};
+      if (options?.filter_by_name) params.q = `name~"${options.filter_by_name}"`;
+      if (options?.page) params.page = options.page;
+      if (options?.pagelen) params.pagelen = options.pagelen;
+      const response = await this.axiosInstance.get(
+        `/repositories/${workspace}/${repoSlug}/refs/branches`,
+        { params },
+      );
+      return response.data;
+    } catch (error) {
+      throw new Error(`Failed to list branches: ${this.formatError(error)}`);
+    }
+  }
+}

src/index.ts

@@ -262,6 +262,269 @@ class BitbucketMCPServer {
               required: ['workspace', 'repository', 'pullRequestId'],
             },
           },
+          // ── Repository / workspace ────────────────────────────────────────
+          {
+            name: 'list_workspaces',
+            description: 'List all Bitbucket workspaces the authenticated user belongs to',
+            inputSchema: {
+              type: 'object',
+              properties: {
+                page: { type: 'integer', description: 'Page number (1-based)' },
+                pagelen: { type: 'integer', description: 'Results per page (default 10, max 100)' },
+              },
+            },
+          },
+          {
+            name: 'list_repositories',
+            description: 'List repositories in a Bitbucket workspace',
+            inputSchema: {
+              type: 'object',
+              properties: {
+                workspace: { type: 'string' },
+                role: { type: 'string', enum: ['member', 'contributor', 'owner'] },
+                page: { type: 'integer' },
+                pagelen: { type: 'integer' },
+              },
+              required: ['workspace'],
+            },
+          },
+          {
+            name: 'get_repository',
+            description: 'Get metadata for a specific Bitbucket repository',
+            inputSchema: {
+              type: 'object',
+              properties: {
+                workspace: { type: 'string' },
+                repository: { type: 'string' },
+              },
+              required: ['workspace', 'repository'],
+            },
+          },
+          {
+            name: 'list_branches',
+            description: 'List branches in a Bitbucket repository',
+            inputSchema: {
+              type: 'object',
+              properties: {
+                workspace: { type: 'string' },
+                repository: { type: 'string' },
+                filter_by_name: { type: 'string', description: 'Filter branches whose name contains this string' },
+                page: { type: 'integer' },
+                pagelen: { type: 'integer' },
+              },
+              required: ['workspace', 'repository'],
+            },
+          },
+          // ── PR write ──────────────────────────────────────────────────────
+          {
+            name: 'create_pull_request',
+            description: 'Create a new pull request in a Bitbucket repository',
+            inputSchema: {
+              type: 'object',
+              properties: {
+                workspace: { type: 'string' },
+                repository: { type: 'string' },
+                title: { type: 'string' },
+                source_branch: { type: 'string' },
+                destination_branch: { type: 'string' },
+                description: { type: 'string' },
+                reviewers: { type: 'array', items: { type: 'string' }, description: 'Reviewer account UUIDs' },
+                close_source_branch: { type: 'boolean' },
+              },
+              required: ['workspace', 'repository', 'title', 'source_branch', 'destination_branch'],
+            },
+          },
+          {
+            name: 'update_pull_request',
+            description: 'Update the title, description, reviewers, or destination branch of a pull request',
+            inputSchema: {
+              type: 'object',
+              properties: {
+                workspace: { type: 'string' },
+                repository: { type: 'string' },
+                pullRequestId: { type: 'integer' },
+                title: { type: 'string' },
+                description: { type: 'string' },
+                reviewers: { type: 'array', items: { type: 'string' } },
+                destination_branch: { type: 'string' },
+              },
+              required: ['workspace', 'repository', 'pullRequestId'],
+            },
+          },
+          {
+            name: 'merge_pull_request',
+            description: 'Merge an open pull request',
+            inputSchema: {
+              type: 'object',
+              properties: {
+                workspace: { type: 'string' },
+                repository: { type: 'string' },
+                pullRequestId: { type: 'integer' },
+                merge_strategy: { type: 'string', enum: ['merge_commit', 'squash', 'fast_forward'] },
+                commit_message: { type: 'string' },
+                close_source_branch: { type: 'boolean' },
+              },
+              required: ['workspace', 'repository', 'pullRequestId'],
+            },
+          },
+          {
+            name: 'decline_pull_request',
+            description: 'Decline (close) an open pull request',
+            inputSchema: {
+              type: 'object',
+              properties: {
+                workspace: { type: 'string' },
+                repository: { type: 'string' },
+                pullRequestId: { type: 'integer' },
+              },
+              required: ['workspace', 'repository', 'pullRequestId'],
+            },
+          },
+          {
+            name: 'approve_pull_request',
+            description: 'Approve a pull request as the authenticated user',
+            inputSchema: {
+              type: 'object',
+              properties: {
+                workspace: { type: 'string' },
+                repository: { type: 'string' },
+                pullRequestId: { type: 'integer' },
+              },
+              required: ['workspace', 'repository', 'pullRequestId'],
+            },
+          },
+          {
+            name: 'unapprove_pull_request',
+            description: 'Remove approval from a pull request',
+            inputSchema: {
+              type: 'object',
+              properties: {
+                workspace: { type: 'string' },
+                repository: { type: 'string' },
+                pullRequestId: { type: 'integer' },
+              },
+              required: ['workspace', 'repository', 'pullRequestId'],
+            },
+          },
+          {
+            name: 'request_changes_pull_request',
+            description: 'Request changes on a pull request as the authenticated user',
+            inputSchema: {
+              type: 'object',
+              properties: {
+                workspace: { type: 'string' },
+                repository: { type: 'string' },
+                pullRequestId: { type: 'integer' },
+              },
+              required: ['workspace', 'repository', 'pullRequestId'],
+            },
+          },
+          {
+            name: 'remove_request_changes_pull_request',
+            description: 'Remove a request-changes vote from a pull request',
+            inputSchema: {
+              type: 'object',
+              properties: {
+                workspace: { type: 'string' },
+                repository: { type: 'string' },
+                pullRequestId: { type: 'integer' },
+              },
+              required: ['workspace', 'repository', 'pullRequestId'],
+            },
+          },
+          // ── Comment write ─────────────────────────────────────────────────
+          {
+            name: 'add_pull_request_comment',
+            description: 'Add a comment to a pull request (general or inline on a specific file/line)',
+            inputSchema: {
+              type: 'object',
+              properties: {
+                workspace: { type: 'string' },
+                repository: { type: 'string' },
+                pullRequestId: { type: 'integer' },
+                content: { type: 'string', description: 'Comment text (Markdown supported)' },
+                inline_path: { type: 'string', description: 'File path for inline comment' },
+                inline_line: { type: 'integer', description: 'Line number for inline comment' },
+                parent_comment_id: { type: 'integer', description: 'Parent comment ID to reply to' },
+              },
+              required: ['workspace', 'repository', 'pullRequestId', 'content'],
+            },
+          },
+          {
+            name: 'update_pull_request_comment',
+            description: 'Edit the text of an existing pull request comment',
+            inputSchema: {
+              type: 'object',
+              properties: {
+                workspace: { type: 'string' },
+                repository: { type: 'string' },
+                pullRequestId: { type: 'integer' },
+                commentId: { type: 'integer' },
+                content: { type: 'string' },
+              },
+              required: ['workspace', 'repository', 'pullRequestId', 'commentId', 'content'],
+            },
+          },
+          {
+            name: 'delete_pull_request_comment',
+            description: 'Delete a comment from a pull request',
+            inputSchema: {
+              type: 'object',
+              properties: {
+                workspace: { type: 'string' },
+                repository: { type: 'string' },
+                pullRequestId: { type: 'integer' },
+                commentId: { type: 'integer' },
+              },
+              required: ['workspace', 'repository', 'pullRequestId', 'commentId'],
+            },
+          },
+          // ── Task write ────────────────────────────────────────────────────
+          {
+            name: 'create_pull_request_task',
+            description: 'Create a review task on a pull request',
+            inputSchema: {
+              type: 'object',
+              properties: {
+                workspace: { type: 'string' },
+                repository: { type: 'string' },
+                pullRequestId: { type: 'integer' },
+                content: { type: 'string', description: 'Task description text' },
+                comment_id: { type: 'integer', description: 'Anchor task to this comment ID' },
+              },
+              required: ['workspace', 'repository', 'pullRequestId', 'content'],
+            },
+          },
+          {
+            name: 'update_pull_request_task',
+            description: 'Update a pull request task content or resolve/unresolve it',
+            inputSchema: {
+              type: 'object',
+              properties: {
+                workspace: { type: 'string' },
+                repository: { type: 'string' },
+                pullRequestId: { type: 'integer' },
+                taskId: { type: 'integer' },
+                content: { type: 'string' },
+                state: { type: 'string', enum: ['RESOLVED', 'UNRESOLVED'] },
+              },
+              required: ['workspace', 'repository', 'pullRequestId', 'taskId'],
+            },
+          },
+          {
+            name: 'delete_pull_request_task',
+            description: 'Delete a pull request task',
+            inputSchema: {
+              type: 'object',
+              properties: {
+                workspace: { type: 'string' },
+                repository: { type: 'string' },
+                pullRequestId: { type: 'integer' },
+                taskId: { type: 'integer' },
+              },
+              required: ['workspace', 'repository', 'pullRequestId', 'taskId'],
+            },
+          },
         ],
       };
     });

src/router.ts

@@ -107,6 +107,60 @@ export class BitbucketRouter {
         case 'get_full_pull_request':
         return this.getFullPullRequest(params);
 
+      case 'list_workspaces':
+        return this.listWorkspaces(params);
+
+      case 'list_repositories':
+        return this.listRepositories(params);
+
+      case 'get_repository':
+        return this.getRepository(params);
+
+      case 'list_branches':
+        return this.listBranches(params);
+
+      case 'create_pull_request':
+        return this.createPullRequest(params);
+
+      case 'update_pull_request':
+        return this.updatePullRequest(params);
+
+      case 'merge_pull_request':
+        return this.mergePullRequest(params);
+
+      case 'decline_pull_request':
+        return this.declinePullRequest(params);
+
+      case 'approve_pull_request':
+        return this.approvePullRequest(params);
+
+      case 'unapprove_pull_request':
+        return this.unapprovePullRequest(params);
+
+      case 'request_changes_pull_request':
+        return this.requestChangesPullRequest(params);
+
+      case 'remove_request_changes_pull_request':
+        return this.removeRequestChangesPullRequest(params);
+
+      case 'add_pull_request_comment':
+        return this.addPullRequestComment(params);
+
+      case 'update_pull_request_comment':
+        return this.updatePullRequestComment(params);
+
+      case 'delete_pull_request_comment':
+        return this.deletePullRequestComment(params);
+
+      case 'create_pull_request_task':
+        return this.createPullRequestTask(params);
+
+      case 'update_pull_request_task':
+        return this.updatePullRequestTask(params);
+
+      case 'delete_pull_request_task':
+        return this.deletePullRequestTask(params);
+
         default:
         return {
           success: false,
@@ -484,6 +538,292 @@ export class BitbucketRouter {
       return { success: false, error: `Get full PR failed: ${String(error)}` };
     }
   }
+
+  private async listWorkspaces(params: ToolCallParams): Promise<ToolResult> {
+    try {
+      const result = await this.client.listWorkspaces({
+        page: params.page,
+        pagelen: params.pagelen,
+      });
+      return { success: true, data: result };
+    } catch (error) {
+      return { success: false, error: `List workspaces failed: ${String(error)}` };
+    }
+  }
+
+  private async listRepositories(params: ToolCallParams): Promise<ToolResult> {
+    try {
+      const { workspace } = this.getDefaultParams(params);
+      if (!workspace) {
+        return { success: false, error: 'Missing required parameters: workspace' };
+      }
+      const result = await this.client.listRepositories(workspace, {
+        role: params.role,
+        page: params.page,
+        pagelen: params.pagelen,
+      });
+      return { success: true, data: result };
+    } catch (error) {
+      return { success: false, error: `List repositories failed: ${String(error)}` };
+    }
+  }
+
+  private async getRepository(params: ToolCallParams): Promise<ToolResult> {
+    try {
+      const { workspace, repoSlug } = this.getDefaultParams(params);
+      if (!workspace || !repoSlug) {
+        return { success: false, error: 'Missing required parameters: workspace and repository' };
+      }
+      const result = await this.client.getRepository(workspace, repoSlug);
+      return { success: true, data: result };
+    } catch (error) {
+      return { success: false, error: `Get repository failed: ${String(error)}` };
+    }
+  }
+
+  private async listBranches(params: ToolCallParams): Promise<ToolResult> {
+    try {
+      const { workspace, repoSlug } = this.getDefaultParams(params);
+      if (!workspace || !repoSlug) {
+        return { success: false, error: 'Missing required parameters: workspace and repository' };
+      }
+      const result = await this.client.listBranches(workspace, repoSlug, {
+        filter_by_name: params.filter_by_name,
+        page: params.page,
+        pagelen: params.pagelen,
+      });
+      return { success: true, data: result };
+    } catch (error) {
+      return { success: false, error: `List branches failed: ${String(error)}` };
+    }
+  }
+
+  private async createPullRequest(params: ToolCallParams): Promise<ToolResult> {
+    try {
+      const { workspace, repoSlug } = this.getDefaultParams(params);
+      if (!workspace || !repoSlug || !params.title || !params.source_branch || !params.destination_branch) {
+        return { success: false, error: 'Missing required parameters: workspace, repository, title, source_branch, destination_branch' };
+      }
+      const result = await this.client.createPullRequest(workspace, repoSlug, {
+        title: params.title,
+        source_branch: params.source_branch,
+        destination_branch: params.destination_branch,
+        description: params.description,
+        reviewers: params.reviewers,
+        close_source_branch: params.close_source_branch,
+      });
+      return { success: true, data: result };
+    } catch (error) {
+      return { success: false, error: `Create pull request failed: ${String(error)}` };
+    }
+  }
+
+  private async updatePullRequest(params: ToolCallParams): Promise<ToolResult> {
+    try {
+      const { workspace, repoSlug } = this.getDefaultParams(params);
+      const prId = parseInt(params.pullRequestId || params.pr_id, 10);
+      if (!workspace || !repoSlug || isNaN(prId)) {
+        return { success: false, error: 'Missing required parameters' };
+      }
+      const result = await this.client.updatePullRequest(workspace, repoSlug, prId, {
+        title: params.title,
+        description: params.description,
+        reviewers: params.reviewers,
+        destination_branch: params.destination_branch,
+      });
+      return { success: true, data: result };
+    } catch (error) {
+      return { success: false, error: `Update pull request failed: ${String(error)}` };
+    }
+  }
+
+  private async mergePullRequest(params: ToolCallParams): Promise<ToolResult> {
+    try {
+      const { workspace, repoSlug } = this.getDefaultParams(params);
+      const prId = parseInt(params.pullRequestId || params.pr_id, 10);
+      if (!workspace || !repoSlug || isNaN(prId)) {
+        return { success: false, error: 'Missing required parameters' };
+      }
+      const result = await this.client.mergePullRequest(workspace, repoSlug, prId, {
+        merge_strategy: params.merge_strategy,
+        commit_message: params.commit_message,
+        close_source_branch: params.close_source_branch,
+      });
+      return { success: true, data: result };
+    } catch (error) {
+      return { success: false, error: `Merge pull request failed: ${String(error)}` };
+    }
+  }
+
+  private async declinePullRequest(params: ToolCallParams): Promise<ToolResult> {
+    try {
+      const { workspace, repoSlug } = this.getDefaultParams(params);
+      const prId = parseInt(params.pullRequestId || params.pr_id, 10);
+      if (!workspace || !repoSlug || isNaN(prId)) {
+        return { success: false, error: 'Missing required parameters' };
+      }
+      const result = await this.client.declinePullRequest(workspace, repoSlug, prId);
+      return { success: true, data: result };
+    } catch (error) {
+      return { success: false, error: `Decline pull request failed: ${String(error)}` };
+    }
+  }
+
+  private async approvePullRequest(params: ToolCallParams): Promise<ToolResult> {
+    try {
+      const { workspace, repoSlug } = this.getDefaultParams(params);
+      const prId = parseInt(params.pullRequestId || params.pr_id, 10);
+      if (!workspace || !repoSlug || isNaN(prId)) {
+        return { success: false, error: 'Missing required parameters' };
+      }
+      const result = await this.client.approvePullRequest(workspace, repoSlug, prId);
+      return { success: true, data: result };
+    } catch (error) {
+      return { success: false, error: `Approve pull request failed: ${String(error)}` };
+    }
+  }
+
+  private async unapprovePullRequest(params: ToolCallParams): Promise<ToolResult> {
+    try {
+      const { workspace, repoSlug } = this.getDefaultParams(params);
+      const prId = parseInt(params.pullRequestId || params.pr_id, 10);
+      if (!workspace || !repoSlug || isNaN(prId)) {
+        return { success: false, error: 'Missing required parameters' };
+      }
+      const result = await this.client.unapprovePullRequest(workspace, repoSlug, prId);
+      return { success: true, data: result };
+    } catch (error) {
+      return { success: false, error: `Unapprove pull request failed: ${String(error)}` };
+    }
+  }
+
+  private async requestChangesPullRequest(params: ToolCallParams): Promise<ToolResult> {
+    try {
+      const { workspace, repoSlug } = this.getDefaultParams(params);
+      const prId = parseInt(params.pullRequestId || params.pr_id, 10);
+      if (!workspace || !repoSlug || isNaN(prId)) {
+        return { success: false, error: 'Missing required parameters' };
+      }
+      const result = await this.client.requestChangesPullRequest(workspace, repoSlug, prId);
+      return { success: true, data: result };
+    } catch (error) {
+      return { success: false, error: `Request changes failed: ${String(error)}` };
+    }
+  }
+
+  private async removeRequestChangesPullRequest(params: ToolCallParams): Promise<ToolResult> {
+    try {
+      const { workspace, repoSlug } = this.getDefaultParams(params);
+      const prId = parseInt(params.pullRequestId || params.pr_id, 10);
+      if (!workspace || !repoSlug || isNaN(prId)) {
+        return { success: false, error: 'Missing required parameters' };
+      }
+      const result = await this.client.removeRequestChangesPullRequest(workspace, repoSlug, prId);
+      return { success: true, data: result };
+    } catch (error) {
+      return { success: false, error: `Remove request-changes failed: ${String(error)}` };
+    }
+  }
+
+  private async addPullRequestComment(params: ToolCallParams): Promise<ToolResult> {
+    try {
+      const { workspace, repoSlug } = this.getDefaultParams(params);
+      const prId = parseInt(params.pullRequestId || params.pr_id, 10);
+      if (!workspace || !repoSlug || isNaN(prId) || !params.content) {
+        return { success: false, error: 'Missing required parameters: workspace, repository, pullRequestId, content' };
+      }
+      const opts: any = { content: params.content };
+      if (params.inline_path && params.inline_line) {
+        opts.inline = { path: params.inline_path, to: parseInt(params.inline_line, 10) };
+      }
+      if (params.parent_comment_id) {
+        opts.parent_id = parseInt(params.parent_comment_id, 10);
+      }
+      const result = await this.client.addPullRequestComment(workspace, repoSlug, prId, opts);
+      return { success: true, data: result };
+    } catch (error) {
+      return { success: false, error: `Add comment failed: ${String(error)}` };
+    }
+  }
+
+  private async updatePullRequestComment(params: ToolCallParams): Promise<ToolResult> {
+    try {
+      const { workspace, repoSlug } = this.getDefaultParams(params);
+      const prId = parseInt(params.pullRequestId || params.pr_id, 10);
+      const commentId = parseInt(params.commentId || params.comment_id, 10);
+      if (!workspace || !repoSlug || isNaN(prId) || isNaN(commentId) || !params.content) {
+        return { success: false, error: 'Missing required parameters: workspace, repository, pullRequestId, commentId, content' };
+      }
+      const result = await this.client.updatePullRequestComment(workspace, repoSlug, prId, commentId, { content: params.content });
+      return { success: true, data: result };
+    } catch (error) {
+      return { success: false, error: `Update comment failed: ${String(error)}` };
+    }
+  }
+
+  private async deletePullRequestComment(params: ToolCallParams): Promise<ToolResult> {
+    try {
+      const { workspace, repoSlug } = this.getDefaultParams(params);
+      const prId = parseInt(params.pullRequestId || params.pr_id, 10);
+      const commentId = parseInt(params.commentId || params.comment_id, 10);
+      if (!workspace || !repoSlug || isNaN(prId) || isNaN(commentId)) {
+        return { success: false, error: 'Missing required parameters' };
+      }
+      const result = await this.client.deletePullRequestComment(workspace, repoSlug, prId, commentId);
+      return { success: true, data: result };
+    } catch (error) {
+      return { success: false, error: `Delete comment failed: ${String(error)}` };
+    }
+  }
+
+  private async createPullRequestTask(params: ToolCallParams): Promise<ToolResult> {
+    try {
+      const { workspace, repoSlug } = this.getDefaultParams(params);
+      const prId = parseInt(params.pullRequestId || params.pr_id, 10);
+      if (!workspace || !repoSlug || isNaN(prId) || !params.content) {
+        return { success: false, error: 'Missing required parameters: workspace, repository, pullRequestId, content' };
+      }
+      const opts: any = { content: params.content };
+      if (params.comment_id) opts.comment_id = parseInt(params.comment_id, 10);
+      const result = await this.client.createPullRequestTask(workspace, repoSlug, prId, opts);
+      return { success: true, data: result };
+    } catch (error) {
+      return { success: false, error: `Create task failed: ${String(error)}` };
+    }
+  }
+
+  private async updatePullRequestTask(params: ToolCallParams): Promise<ToolResult> {
+    try {
+      const { workspace, repoSlug } = this.getDefaultParams(params);
+      const prId = parseInt(params.pullRequestId || params.pr_id, 10);
+      const taskId = parseInt(params.taskId || params.task_id, 10);
+      if (!workspace || !repoSlug || isNaN(prId) || isNaN(taskId)) {
+        return { success: false, error: 'Missing required parameters' };
+      }
+      const result = await this.client.updatePullRequestTask(workspace, repoSlug, prId, taskId, {
+        content: params.content,
+        state: params.state,
+      });
+      return { success: true, data: result };
+    } catch (error) {
+      return { success: false, error: `Update task failed: ${String(error)}` };
+    }
+  }
+
+  private async deletePullRequestTask(params: ToolCallParams): Promise<ToolResult> {
+    try {
+      const { workspace, repoSlug } = this.getDefaultParams(params);
+      const prId = parseInt(params.pullRequestId || params.pr_id, 10);
+      const taskId = parseInt(params.taskId || params.task_id, 10);
+      if (!workspace || !repoSlug || isNaN(prId) || isNaN(taskId)) {
+        return { success: false, error: 'Missing required parameters' };
+      }
+      const result = await this.client.deletePullRequestTask(workspace, repoSlug, prId, taskId);
+      return { success: true, data: result };
+    } catch (error) {
+      return { success: false, error: `Delete task failed: ${String(error)}` };
+    }
+  }
 }
 
 export default BitbucketRouter;

tests/integration/bitbucket-api.test.ts

@@ -292,3 +292,112 @@ describe('Error Handling', () => {
     }
   });
 });
+
+const RUN_WRITES = process.env.RUN_WRITE_TESTS === 'true';
+const TEST_PR_ID = process.env.TEST_PR_ID ? parseInt(process.env.TEST_PR_ID, 10) : undefined;
+
+describe('Repository / Workspace (read)', () => {
+  let client: BitbucketClient;
+
+  beforeAll(() => {
+    client = new BitbucketClient();
+  });
+
+  it('should list workspaces', async () => {
+    if (!HAS_TOKEN) return;
+    const result = await client.listWorkspaces({ pagelen: 10 });
+    expect(result).toHaveProperty('values');
+    expect(Array.isArray(result.values)).toBe(true);
+  });
+
+  it('should list repositories in workspace', async () => {
+    if (!HAS_TOKEN) return;
+    const result = await client.listRepositories(WORKSPACE, { pagelen: 10 });
+    expect(result).toHaveProperty('values');
+    expect(Array.isArray(result.values)).toBe(true);
+  });
+
+  it('should get a specific repository', async () => {
+    if (!HAS_TOKEN) return;
+    const result = await client.getRepository(WORKSPACE, REPO_SLUG);
+    expect(result).toHaveProperty('slug');
+    expect(result).toHaveProperty('full_name');
+  });
+
+  it('should list branches', async () => {
+    if (!HAS_TOKEN) return;
+    const result = await client.listBranches(WORKSPACE, REPO_SLUG, { pagelen: 10 });
+    expect(result).toHaveProperty('values');
+    expect(Array.isArray(result.values)).toBe(true);
+    if (result.values.length > 0) {
+      expect(result.values[0]).toHaveProperty('name');
+    }
+  });
+
+  it('should filter branches by name', async () => {
+    if (!HAS_TOKEN) return;
+    const result = await client.listBranches(WORKSPACE, REPO_SLUG, { filter_by_name: 'main' });
+    expect(result).toHaveProperty('values');
+  });
+});
+
+describe('PR Write Operations (requires RUN_WRITE_TESTS=true and TEST_PR_ID)', () => {
+  let client: BitbucketClient;
+
+  beforeAll(() => {
+    client = new BitbucketClient();
+  });
+
+  it('should approve then immediately unapprove a PR', async () => {
+    if (!HAS_TOKEN || !RUN_WRITES) return;
+    if (!TEST_PR_ID) { console.log('⚠️ TEST_PR_ID not set, skipping approve/unapprove test'); return; }
+
+    await client.approvePullRequest(WORKSPACE, REPO_SLUG, TEST_PR_ID);
+    try {
+      const unapproved = await client.unapprovePullRequest(WORKSPACE, REPO_SLUG, TEST_PR_ID);
+      expect(unapproved).toHaveProperty('success', true);
+    } finally {
+      await client.unapprovePullRequest(WORKSPACE, REPO_SLUG, TEST_PR_ID).catch(() => {});
+    }
+  });
+});
+
+describe('Comment / Task Write Operations (requires RUN_WRITE_TESTS=true and TEST_PR_ID)', () => {
+  let client: BitbucketClient;
+
+  beforeAll(() => {
+    client = new BitbucketClient();
+  });
+
+  it('should add, update, then delete a comment', async () => {
+    if (!HAS_TOKEN || !RUN_WRITES) return;
+    if (!TEST_PR_ID) { console.log('⚠️ TEST_PR_ID not set, skipping comment test'); return; }
+
+    const added = await client.addPullRequestComment(WORKSPACE, REPO_SLUG, TEST_PR_ID, { content: 'Integration test comment' });
+    expect(added).toHaveProperty('id');
+    const commentId = added.id;
+
+    try {
+      const updated = await client.updatePullRequestComment(WORKSPACE, REPO_SLUG, TEST_PR_ID, commentId, { content: 'Updated comment' });
+      expect(updated).toHaveProperty('id', commentId);
+    } finally {
+      await client.deletePullRequestComment(WORKSPACE, REPO_SLUG, TEST_PR_ID, commentId).catch(() => {});
+    }
+  });
+
+  it('should create, resolve, then delete a task', async () => {
+    if (!HAS_TOKEN || !RUN_WRITES) return;
+    if (!TEST_PR_ID) { console.log('⚠️ TEST_PR_ID not set, skipping task test'); return; }
+
+    const created = await client.createPullRequestTask(WORKSPACE, REPO_SLUG, TEST_PR_ID, { content: 'Integration test task' });
+    expect(created).toHaveProperty('id');
+    const taskId = created.id;
+
+    try {
+      const resolved = await client.updatePullRequestTask(WORKSPACE, REPO_SLUG, TEST_PR_ID, taskId, { state: 'RESOLVED' });
+      expect(resolved).toBeDefined();
+    } finally {
+      await client.deletePullRequestTask(WORKSPACE, REPO_SLUG, TEST_PR_ID, taskId).catch(() => {});
+    }
+  });
+});

tests/unit/router.test.ts

@@ -2,68 +2,118 @@
  * Unit tests for BitbucketRouter
  */
 
-import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
 import { BitbucketRouter, ToolResult } from '../../src/router.js';
 
-// Mock the BitbucketClient
+// Mock domain clients - use simple object mocks instead of nested vi.fn
-vi.mock('../../src/bitbucket-client.js', () => {
+vi.mock('../../src/clients/pull-request-client.js', () => {
+  const mockPRClient = {
+    listPullRequests: async () => [
+      { id: 1, title: 'Test PR 1', state: 'OPEN' },
+      { id: 2, title: 'Test PR 2', state: 'MERGED' }
+    ],
+    getPullRequest: async () => ({
+      id: 1,
+      title: 'Test PR',
+      state: 'OPEN',
+      source: { branch: { name: 'feature' } },
+      destination: { branch: { name: 'main' } }
+    }),
+    getPullRequestStatus: async () => ({
+      id: 1,
+      title: 'Test PR',
+      state: 'OPEN',
+      status: 'NORMAL'
+    }),
+    getPullRequestActivities: async () => ({
+      values: [{ action: 'OPEN' }]
+    }),
+    getPullRequestChanges: async () => ({
+      values: [{ type: 'modified', path: 'src/test.ts' }]
+    }),
+    getPullRequestCommits: async () => ({
+      values: [{ hash: 'abc123' }]
+    }),
+    getPullRequestDiff: async () => ({
+      diff: '--- test.ts\n+++ test.ts\n@@ -1 +1 @@'
+    }),
+    getPullRequestPatch: async () => ({
+      patch: '--- original\n+++ modified'
+    }),
+    getPullRequestParticipants: async () => ({
+      values: [{ user: { display_name: 'Test User' } }]
+    }),
+    getPullRequestReviewers: async () => [
+      { user: { display_name: 'Reviewer 1' } }
+    ],
+    getPullRequestTasks: async () => ({
+      values: []
+    }),
+    getPullRequestTaskCount: async () => ({ count: 0 }),
+    getFullPullRequest: async () => ({
+      id: 1,
+      title: 'Test PR',
+      description: 'Test description'
+    }),
+    createPullRequest: async () => ({ id: 10, title: 'New PR', state: 'OPEN' }),
+    updatePullRequest: async () => ({ id: 1, title: 'Updated PR', state: 'OPEN' }),
+    mergePullRequest: async () => ({ id: 1, state: 'MERGED' }),
+    declinePullRequest: async () => ({ id: 1, state: 'DECLINED' }),
+    approvePullRequest: async () => ({ approved: true }),
+    unapprovePullRequest: async () => ({ success: true }),
+    requestChangesPullRequest: async () => ({ state: 'changes_requested' }),
+    removeRequestChangesPullRequest: async () => ({ success: true })
+  };
+
   return {
-    BitbucketClient: vi.fn().mockImplementation(() => ({
+    PullRequestClient: class {
-      listPullRequests: vi.fn().mockResolvedValue([
+      constructor() {
-        { id: 1, title: 'Test PR 1', state: 'OPEN' },
+        Object.assign(this, mockPRClient);
-        { id: 2, title: 'Test PR 2', state: 'MERGED' }
+      }
-      ]),
+    }
-      getPullRequest: vi.fn().mockResolvedValue({
+  };
-        id: 1,
+});
-        title: 'Test PR',
+
-        state: 'OPEN',
+vi.mock('../../src/clients/repository-client.js', () => {
-        source: { branch: { name: 'feature' } },
+  const mockRepoClient = {
-        destination: { branch: { name: 'main' } }
+    listWorkspaces: async () => ({ values: [{ slug: 'my-workspace' }] }),
-      }),
+    listRepositories: async () => ({ values: [{ slug: 'my-repo', name: 'My Repo' }] }),
-      getPullRequestStatus: vi.fn().mockResolvedValue({
+    getRepository: async () => ({ slug: 'my-repo', name: 'My Repo', full_name: 'ws/my-repo' }),
-        id: 1,
+    listBranches: async () => ({ values: [{ name: 'main' }, { name: 'develop' }] })
-        title: 'Test PR',
+  };
-        state: 'OPEN',
+
-        status: 'NORMAL'
+  return {
-      }),
+    RepositoryClient: class {
-      getPullRequestActivities: vi.fn().mockResolvedValue({
+      constructor() {
-        values: [{ action: 'OPEN' }]
+        Object.assign(this, mockRepoClient);
-      }),
+      }
-      getPullRequestChanges: vi.fn().mockResolvedValue({
+    }
-        values: [{ type: 'modified', path: 'src/test.ts' }]
+  };
-      }),
+});
-      getPullRequestComments: vi.fn().mockResolvedValue({
+
-        values: [{ id: 1, content: { raw: 'Test comment' } }]
+vi.mock('../../src/clients/comment-client.js', () => {
-      }),
+  const mockCommentClient = {
-      getPullRequestComment: vi.fn().mockResolvedValue({
+    getPullRequestComments: async () => ({
-        id: 1,
+      values: [{ id: 1, content: { raw: 'Test comment' } }]
-        content: { raw: 'Test comment' }
+    }),
-      }),
+    getPullRequestComment: async () => ({
-      getPullRequestCommits: vi.fn().mockResolvedValue({
+      id: 1,
-        values: [{ hash: 'abc123' }]
+      content: { raw: 'Test comment' }
-      }),
+    }),
-      getPullRequestDiff: vi.fn().mockResolvedValue({
+    addPullRequestComment: async () => ({ id: 100, content: { raw: 'New comment' } }),
-        diff: '--- test.ts\n+++ test.ts\n@@ -1 +1 @@'
+    updatePullRequestComment: async () => ({ id: 100, content: { raw: 'Updated' } }),
-      }),
+    deletePullRequestComment: async () => ({ success: true }),
-      getPullRequestPatch: vi.fn().mockResolvedValue({
+    createPullRequestTask: async () => ({ id: 200, content: { raw: 'Task' }, state: 'UNRESOLVED' }),
-        patch: '--- original\n+++ modified'
+    updatePullRequestTask: async () => ({ id: 200, state: 'RESOLVED' }),
-      }),
+    deletePullRequestTask: async () => ({ success: true })
-      getPullRequestParticipants: vi.fn().mockResolvedValue({
+  };
-        values: [{ user: { display_name: 'Test User' } }]
+
-      }),
+  return {
-      getPullRequestReviewers: vi.fn().mockResolvedValue([
+    CommentClient: class {
-        { user: { display_name: 'Reviewer 1' } }
+      constructor() {
-      ]),
+        Object.assign(this, mockCommentClient);
-      getPullRequestTasks: vi.fn().mockResolvedValue({
+      }
-        values: []
+    }
-      }),
-      getPullRequestTaskCount: vi.fn().mockResolvedValue({ count: 0 }),
-      getFullPullRequest: vi.fn().mockResolvedValue({
-        id: 1,
-        title: 'Test PR',
-        description: 'Test description'
-      })
-    }))
   };
 });
 
@@ -415,6 +465,265 @@ describe('BitbucketRouter', () => {
     });
   });
 
+  describe('list_workspaces', () => {
+    it('should return workspaces', async () => {
+      const result = await router.executeTool('list_workspaces', {}) as ToolResult;
+      expect(result.success).toBe(true);
+      expect(result.data).toHaveProperty('values');
+    });
+  });
+
+  describe('list_repositories', () => {
+    it('should return repositories for valid workspace', async () => {
+      const result = await router.executeTool('list_repositories', {
+        workspace: 'test-workspace',
+      }) as ToolResult;
+      expect(result.success).toBe(true);
+      expect(result.data).toHaveProperty('values');
+    });
+
+    it('should fail without workspace', async () => {
+      const result = await router.executeTool('list_repositories', {}) as ToolResult;
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('Missing required parameters');
+    });
+  });
+
+  describe('get_repository', () => {
+    it('should return repository metadata', async () => {
+      const result = await router.executeTool('get_repository', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+      }) as ToolResult;
+      expect(result.success).toBe(true);
+      expect(result.data).toHaveProperty('slug');
+    });
+  });
+
+  describe('list_branches', () => {
+    it('should return branches', async () => {
+      const result = await router.executeTool('list_branches', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+      }) as ToolResult;
+      expect(result.success).toBe(true);
+      expect(result.data).toHaveProperty('values');
+    });
+  });
+
+  describe('create_pull_request', () => {
+    it('should create a pull request', async () => {
+      const result = await router.executeTool('create_pull_request', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+        title: 'My PR',
+        source_branch: 'feature/x',
+        destination_branch: 'main',
+      }) as ToolResult;
+      expect(result.success).toBe(true);
+      expect(result.data).toHaveProperty('id');
+    });
+
+    it('should fail without title', async () => {
+      const result = await router.executeTool('create_pull_request', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+        source_branch: 'feature/x',
+        destination_branch: 'main',
+      }) as ToolResult;
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('Missing required parameters');
+    });
+
+    it('should fail without source_branch', async () => {
+      const result = await router.executeTool('create_pull_request', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+        title: 'My PR',
+        destination_branch: 'main',
+      }) as ToolResult;
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('Missing required parameters');
+    });
+  });
+
+  describe('update_pull_request', () => {
+    it('should update a pull request', async () => {
+      const result = await router.executeTool('update_pull_request', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+        pullRequestId: 1,
+        title: 'Updated',
+      }) as ToolResult;
+      expect(result.success).toBe(true);
+      expect(result.data).toHaveProperty('id');
+    });
+  });
+
+  describe('merge_pull_request', () => {
+    it('should merge a pull request', async () => {
+      const result = await router.executeTool('merge_pull_request', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+        pullRequestId: 1,
+      }) as ToolResult;
+      expect(result.success).toBe(true);
+      expect(result.data).toHaveProperty('state', 'MERGED');
+    });
+  });
+
+  describe('decline_pull_request', () => {
+    it('should decline a pull request', async () => {
+      const result = await router.executeTool('decline_pull_request', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+        pullRequestId: 1,
+      }) as ToolResult;
+      expect(result.success).toBe(true);
+      expect(result.data).toHaveProperty('state', 'DECLINED');
+    });
+  });
+
+  describe('approve_pull_request', () => {
+    it('should approve a pull request', async () => {
+      const result = await router.executeTool('approve_pull_request', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+        pullRequestId: 1,
+      }) as ToolResult;
+      expect(result.success).toBe(true);
+    });
+  });
+
+  describe('unapprove_pull_request', () => {
+    it('should remove approval', async () => {
+      const result = await router.executeTool('unapprove_pull_request', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+        pullRequestId: 1,
+      }) as ToolResult;
+      expect(result.success).toBe(true);
+    });
+  });
+
+  describe('request_changes_pull_request', () => {
+    it('should request changes', async () => {
+      const result = await router.executeTool('request_changes_pull_request', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+        pullRequestId: 1,
+      }) as ToolResult;
+      expect(result.success).toBe(true);
+    });
+  });
+
+  describe('remove_request_changes_pull_request', () => {
+    it('should remove request-changes', async () => {
+      const result = await router.executeTool('remove_request_changes_pull_request', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+        pullRequestId: 1,
+      }) as ToolResult;
+      expect(result.success).toBe(true);
+    });
+  });
+
+  describe('add_pull_request_comment', () => {
+    it('should add a comment', async () => {
+      const result = await router.executeTool('add_pull_request_comment', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+        pullRequestId: 1,
+        content: 'Great work!',
+      }) as ToolResult;
+      expect(result.success).toBe(true);
+      expect(result.data).toHaveProperty('id');
+    });
+
+    it('should fail without content', async () => {
+      const result = await router.executeTool('add_pull_request_comment', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+        pullRequestId: 1,
+      }) as ToolResult;
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('Missing required parameters');
+    });
+  });
+
+  describe('update_pull_request_comment', () => {
+    it('should update a comment', async () => {
+      const result = await router.executeTool('update_pull_request_comment', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+        pullRequestId: 1,
+        commentId: 100,
+        content: 'Edited',
+      }) as ToolResult;
+      expect(result.success).toBe(true);
+    });
+  });
+
+  describe('delete_pull_request_comment', () => {
+    it('should delete a comment', async () => {
+      const result = await router.executeTool('delete_pull_request_comment', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+        pullRequestId: 1,
+        commentId: 100,
+      }) as ToolResult;
+      expect(result.success).toBe(true);
+    });
+  });
+
+  describe('create_pull_request_task', () => {
+    it('should create a task', async () => {
+      const result = await router.executeTool('create_pull_request_task', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+        pullRequestId: 1,
+        content: 'Review section 3',
+      }) as ToolResult;
+      expect(result.success).toBe(true);
+      expect(result.data).toHaveProperty('id');
+    });
+
+    it('should fail without content', async () => {
+      const result = await router.executeTool('create_pull_request_task', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+        pullRequestId: 1,
+      }) as ToolResult;
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('Missing required parameters');
+    });
+  });
+
+  describe('update_pull_request_task', () => {
+    it('should update a task', async () => {
+      const result = await router.executeTool('update_pull_request_task', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+        pullRequestId: 1,
+        taskId: 200,
+        state: 'RESOLVED',
+      }) as ToolResult;
+      expect(result.success).toBe(true);
+    });
+  });
+
+  describe('delete_pull_request_task', () => {
+    it('should delete a task', async () => {
+      const result = await router.executeTool('delete_pull_request_task', {
+        workspace: 'test-workspace',
+        repository: 'test-repo',
+        pullRequestId: 1,
+        taskId: 200,
+      }) as ToolResult;
+      expect(result.success).toBe(true);
+    });
+  });
+
   describe('unknown tool', () => {
     it('should return error for unknown tool', async () => {
       const result = await router.executeTool('unknown_tool', {}) as ToolResult;