How to integrate Bitbucket MCP with Claude Code

Manage your Bitbucket directly from Claude Code with zero worries about OAuth hassles, API-breaking issues, or reliability and security concerns. You can do this in two different ways: Via Composio Connect - Direct and easiest approach Via Composio SDK - Programmatic approach with more control

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Bitbucket is a Git-based code hosting and collaboration platform for teams. It enables secure repository management and streamlined code reviews.

105 Tools

Introduction

Manage your Bitbucket directly from Claude Code with zero worries about OAuth hassles, API-breaking issues, or reliability and security concerns.

You can do this in two different ways:

  1. Via Composio Connect - Direct and easiest approach
  2. Via Composio SDK - Programmatic approach with more control

Also integrate Bitbucket with

Why use Composio?

  • Only one MCP URL to connect multiple apps with Claude Code with zero auth hassles.
  • Programmatic tool calling allows LLMs to write its code in a remote workbench to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
  • Handling Large tool responses out of LLM context to minimize context rot.
  • Dynamic just-in-time access to 20,000 tools across 1000+ other Apps for cross-app workflows. It loads the tools you need, so LLMs aren't overwhelmed by tools you don't need.

Connecting Bitbucket to Claude Code using Composio

1. Add the Composio MCP to Claude

Terminal

2. Start Claude Code

bash
claude

3. Open your MCP list

bash
/mcp

4. Select Composio and click on Authenticate

Select Composio and click Authenticate

5. This will redirect you to the Composio OAuth page. Complete the flow by authorizing Composio and you're all set.

Composio OAuth authorization page
Composio authorization complete
Ask Claude to connect to your account and authenticate via the link

What is the Bitbucket MCP server, and what's possible with it?

The Bitbucket MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Bitbucket account. It provides structured and secure access to your repositories, issues, and pull requests, so your agent can create branches, manage issues, review code, and handle repository operations for you.

  • Branch and repository management: Let your agent create new branches for feature work or initialize fresh repositories within your Bitbucket workspace—no manual setup required.
  • Automated issue tracking: Have your agent create, comment on, or delete issues to streamline team collaboration and bug tracking directly from your workflows.
  • Pull request automation: Empower your agent to open new pull requests for code review, ensuring changes are properly tracked and integrated.
  • File and snippet operations: Ask your agent to fetch specific files from any branch or commit, or to post comments on code snippets for contextual discussions.
  • User profile and workspace insights: Retrieve your Bitbucket user profile details on demand, making it easy to personalize and audit agent-driven actions.

Connecting Bitbucket via Composio SDK

Composio SDK is the underlying tech that powers Rube. It's a universal gateway that does everything Rube does but with much more programmatic control. You can programmatically generate an MCP URL with the app you need (here Bitbucket) for even more tool search precision. It's secure and reliable.

How the Composio SDK works

The Composio SDK follows a three-phase workflow:

  1. Discovery: Searches for tools matching your task and returns relevant toolkits with their details.
  2. Authentication: Checks for active connections. If missing, creates an auth config and returns a connection URL via Auth Link.
  3. Execution: Executes the action using the authenticated connection.

Step-by-step Guide

Step by step10 STEPS
1

Prerequisites

Before starting, make sure you have:
  • Claude Pro, Max, or API billing enabled Anthropic account
  • Composio API Key
  • A Bitbucket account
  • Basic knowledge of Python or TypeScript
2

Install Claude Code

bash
# macOS, Linux, WSL
curl -fsSL https://claude.ai/install.sh | bash

# Windows PowerShell
irm https://claude.ai/install.ps1 | iex

# Windows CMD
curl -fsSL https://claude.ai/install.cmd -o install.cmd && install.cmd && del install.cmd

To install Claude Code, use one of the following methods based on your operating system:

3

Set up Claude Code

bash
cd your-project-folder
claude

Open a terminal, go to your project folder, and start Claude Code:

  • Claude Code will open in your terminal
  • Follow the prompts to sign in with your Anthropic account
  • Complete the authentication flow
  • Once authenticated, you can start using Claude Code
Claude Code initial setup showing sign-in prompt
Claude Code terminal after successful login
4

Set up environment variables

bash
COMPOSIO_API_KEY=your_composio_api_key_here
USER_ID=your_user_id_here

Create a .env file in your project root with the following variables:

  • COMPOSIO_API_KEY authenticates with Composio (get it from Composio dashboard)
  • USER_ID identifies the user for session management (use any unique identifier)
5

Install Composio library

npm install @composio/core dotenv

Install the Composio TypeScript library to create MCP sessions.

  • @composio/core provides the core Composio functionality
  • dotenv loads environment variables from your .env file
6

Generate Composio MCP URL

import 'dotenv/config';
import { Composio } from '@composio/core';

const { COMPOSIO_API_KEY, USER_ID } = process.env;

if (!COMPOSIO_API_KEY || !USER_ID) {
  throw new Error('COMPOSIO_API_KEY and USER_ID required in .env');
}

const composioClient = new Composio({ apiKey: COMPOSIO_API_KEY });

const composioSession = await composioClient.create(USER_ID, {
  toolkits: ['bitbucket'],
});

const composioMcpUrl = composioSession?.mcp.url;

console.log(`MCP URL: ${composioMcpUrl}`);
console.log(`\nUse this command to add to Claude Code:`);
console.log(`claude mcp add --transport http bitbucket-composio "${composioMcpUrl}" --headers "X-API-Key:${COMPOSIO_API_KEY}"`);

Create a script to generate a Composio MCP URL for Bitbucket. This URL will be used to connect Claude Code to Bitbucket.

What's happening

  • We import the Composio client and load environment variables
  • Create a Composio instance with your API key
  • Call create() to create a Tool Router session for Bitbucket
  • The returned mcp.url is the MCP server URL that Claude Code will use
  • The script prints this URL so you can copy it
7

Run the script and copy the MCP URL

node --loader ts-node/esm generate_mcp_url.ts
# or if using tsx
tsx generate_mcp_url.ts

Run your TypeScript script to generate the MCP URL.

  • The script connects to Composio and creates a Tool Router session
  • It prints the MCP URL and the exact command you need to run
  • Copy the entire claude mcp add command from the output
8

Add Bitbucket MCP to Claude Code

bash
claude mcp add --transport http bitbucket-composio "YOUR_MCP_URL_HERE" --headers "X-API-Key:YOUR_COMPOSIO_API_KEY"

# Then restart Claude Code
exit
claude

In your terminal, add the MCP server using the command from the previous step. The command format is:

  • claude mcp add registers a new MCP server with Claude Code
  • --transport http specifies that this is an HTTP-based MCP server
  • The server name (bitbucket-composio) is how you'll reference it
  • The URL points to your Composio Tool Router session
  • --headers includes your Composio API key for authentication

After running the command, close the current Claude Code session and start a new one for the changes to take effect.

9

Verify the installation

bash
claude mcp list

Check that your Bitbucket MCP server is properly configured.

  • This command lists all MCP servers registered with Claude Code
  • You should see your bitbucket-composio entry in the list
  • This confirms that Claude Code can now access Bitbucket tools

If everything is wired up, you should see your bitbucket-composio entry listed:

Claude Code MCP list showing the toolkit MCP server
10

Authenticate Bitbucket

The first time you try to use Bitbucket tools, you'll be prompted to authenticate.

  • Claude Code will detect that you need to authenticate with Bitbucket
  • It will show you an authentication link
  • Open the link in your browser (or copy/paste it)
  • Complete the Bitbucket authorization flow
  • Return to the terminal and start using Bitbucket through Claude Code

Once authenticated, you can ask Claude Code to perform Bitbucket operations in natural language. For example:

  • "Create a new branch off main"
  • "Open a pull request for my feature"
  • "Comment on the latest open issue"

Complete Code

Here's the complete code to get you started with Bitbucket and Claude Code:

import 'dotenv/config';
import { Composio } from '@composio/core';

const { COMPOSIO_API_KEY, USER_ID } = process.env;

if (!COMPOSIO_API_KEY || !USER_ID) {
  throw new Error('COMPOSIO_API_KEY and USER_ID required in .env');
}

const composioClient = new Composio({ apiKey: COMPOSIO_API_KEY });

const composioSession = await composioClient.create(USER_ID, {
  toolkits: ['bitbucket'],
});

const composioMcpUrl = composioSession?.mcp.url;

console.log(`MCP URL: ${composioMcpUrl}`);
console.log(`\nUse this command to add to Claude Code:`);
console.log(`claude mcp add --transport http bitbucket-composio "${composioMcpUrl}" --headers "X-API-Key:${COMPOSIO_API_KEY}"`);

Conclusion

You've successfully integrated Bitbucket with Claude Code using Composio's MCP server. Now you can interact with Bitbucket directly from your terminal using natural language commands.

Key features of this setup:

  • Terminal-native experience without switching contexts
  • Natural language commands for Bitbucket operations
  • Secure authentication through Composio's managed MCP
  • Tool Router for dynamic tool discovery and execution

Next steps:

  • Try asking Claude Code to perform various Bitbucket operations
  • Add more toolkits to your Tool Router session for multi-app workflows
  • Integrate this setup into your development workflow for increased productivity

You can extend this by adding more toolkits, implementing custom workflows, or building automation scripts that leverage Claude Code's capabilities.

TOOLS

Supported Tools

Every Bitbucket action and event your agent gets out of the box.

Approve Pull Request

Tool to approve a pull request as the authenticated user.

Browse repository path

Tool to retrieve content for a file path or browse directory contents at a specified revision in a Bitbucket repository.

Create a branch

Creates a new branch in a Bitbucket repository from a target commit hash; the branch name must be unique, adhere to Bitbucket's naming conventions, and not include the 'refs/heads/' prefix.

Create an issue

Creates a new issue in a Bitbucket repository, setting the authenticated user as reporter; ensures assignee (if provided) has repository access, and that any specified milestone, version, or component IDs exist.

Create an issue comment

Adds a new comment with markdown support to an existing Bitbucket issue.

Create a pull request

Creates a new pull request in a specified Bitbucket repository, ensuring the source branch exists and is distinct from the (optional) destination branch.

Create pull request comment

Creates a new comment on a Bitbucket pull request.

Create commit report annotations

Adds multiple annotations to a commit report in bulk.

List commits from revision (POST)

Tool to list commits from a revision using POST method.

Create repository

Creates a new Bitbucket 'git' repository in a specified workspace, defaulting to the workspace's oldest project if `project_key` is not provided.

Create snippet comment

Posts a new top-level comment or a threaded reply to an existing comment on a specified Bitbucket snippet.

Create team pipeline variable

Creates a team-level pipeline configuration variable in Bitbucket.

Create user pipeline variable

Creates a user-level pipeline variable for Bitbucket pipelines.

Delete commit comment

Permanently deletes a specific comment on a commit.

Delete issue

Permanently deletes a specific issue, identified by its `issue_id`, from the repository specified by `repo_slug` within the given `workspace`.

Delete pull request comment

Permanently deletes a specific pull request comment (top-level, inline, or threaded reply).

Delete commit report annotation

Deletes a single annotation matching the provided ID from a commit report.

Delete repository

Permanently deletes a specified Bitbucket repository; this action is irreversible and does not affect forks.

Delete snippet watch

Stops watching a specific snippet.

Delete user pipeline variable

Permanently deletes a user-level pipeline configuration variable identified by its UUID.

Get branch

Retrieves detailed information about a specific branch in a Bitbucket repository.

Get Commit Build Status

Get a specific build status for a commit in Bitbucket.

Get Commit Changes

Tool to retrieve a page of changes made in a specified commit, showing all changed files with their change statistics (lines added/removed, status).

Get commit comment

Retrieves a specific comment from a commit by its ID.

Get Commit Diff

Tool to retrieve the unified diff between two provided revisions or for a single commit in a Bitbucket repository.

Get current user (v2)

Tool to retrieve complete profile information for the currently authenticated Bitbucket user.

Get deployment environment variables

Retrieves deployment environment level variables for a specific Bitbucket repository environment.

Get file from repository

Retrieves a specific file's content from a Bitbucket repository at a given commit (hash, branch, or tag), failing if the file path is invalid for that commit.

Get hook events

Retrieves a paginated list of all valid webhook events for a specified entity type (repository or workspace).

Get OpenID configuration for OIDC in Pipelines

Retrieves the OpenID Connect discovery configuration for Bitbucket Pipelines OIDC.

Get Pull Request

Get a single pull request by ID with complete details.

Get pull request comment

Tool to retrieve a specific comment from a pull request by its ID.

Get Pull Request Commits

Tool to retrieve commits for a specified pull request.

Get Pull Request Diff

Tool to fetch the unified diff for a Bitbucket pull request (follows 302 redirect to repository diff).

Get Pull Request Diffstat

Tool to get the diffstat for a Bitbucket pull request, showing all changed files with their change statistics (lines added/removed, status).

Get Repository Branching Model

Return the branching model as applied to the repository.

Get Repository Commit

Tool to retrieve detailed information about a specific commit in a Bitbucket repository.

Get commit comments

Retrieves all comments on a specific commit in a Bitbucket repository.

Get commit report

Returns a single report matching the provided ID from a commit.

Get Commit Reports

Tool to get reports linked to a specific commit.

Get commit report annotation

Returns a single annotation matching the provided ID from a commit report.

Get commit statuses

Returns all build statuses (e.

Get effective branching model

Retrieves the effective branching model for a Bitbucket repository, showing which branching model is currently applied (including any inheritance from project-level settings).

Get Repository Environment

Retrieve detailed information about a specific deployment environment in a Bitbucket repository.

Get file commit history

Returns a paginated list of commits that modified the specified file.

Check if user voted for issue

Tool to check whether the authenticated user has voted for a specific issue in a Bitbucket repository.

Get Repositories Merge Base

Get the merge base (best common ancestor) between two commits in a Bitbucket repository.

Get specific pipeline

Retrieve a specified pipeline from a Bitbucket repository.

Get repository pipelines caches

Retrieves the repository pipelines caches.

Get repository pipeline runners

Retrieves the list of self-hosted runners configured for a repository's pipelines.

Get repository pipeline schedules

Retrieves configured pipeline schedules for a Bitbucket repository.

Get repository SSH known hosts

Retrieves repository-level SSH known hosts configured for Bitbucket Pipelines.

Get repository pipeline variables

Retrieves repository-level pipeline variables for a specific Bitbucket repository.

Get pipeline steps

Retrieves all steps for a given pipeline.

Get pull requests activity log

Get paginated activity log for all pull requests in a repository.

Get pull request comments

Retrieves a paginated list of comments on a specific pull request in a Bitbucket repository.

Get pull request statuses

Returns all build statuses (e.

Get repository refs

Returns the branches and tags in the repository.

Get tag

Retrieves detailed information about a specific tag in a Bitbucket repository.

Get repositories src

Lists the contents of the root directory on the repository's main branch without needing to specify a commit or branch.

Get repository watchers

Retrieves a paginated list of all the watchers on the specified repository.

Get repository

Retrieves detailed information about a specific repository in a Bitbucket workspace.

Get Repository Patch

Tool to retrieve the git patch content for a Bitbucket repository at a specified revision or commit range.

Get snippet

Retrieves a specific Bitbucket snippet by its encoded ID from an existing workspace, returning its metadata and file structure.

Get snippet watch status

Checks if the current user is watching a specific snippet.

Get SSH keys for user

Retrieves a paginated list of SSH keys for a specified Bitbucket user.

Get user

Retrieves public profile information for a specific Bitbucket user by username or UUID.

Get user emails

Returns all the authenticated user's email addresses, both confirmed and unconfirmed.

Get user email details

Retrieves details about a specific email address for the authenticated user.

Get user permissions for repositories

Returns an object for each repository the caller has explicit access to, including their permission level.

Get user permissions for workspaces

Retrieves workspace memberships and permission levels for the authenticated user.

Get user workspaces

Tool to retrieve all workspaces accessible to the authenticated user.

Get workspace

Retrieves detailed information about a specific Bitbucket workspace.

Get Workspace Pull Requests by User

Tool to get all workspace pull requests authored by a specified user.

Search code in workspace

Tool to search for code in the repositories of the specified workspace.

List branches

Lists branches in a Bitbucket repository with optional server-side filtering by name pattern (BBQL) and sorting.

List commits

Tool to retrieve a page of commits from a Bitbucket repository.

List commits from revision

Tool to list commits starting from a specific revision in a Bitbucket repository.

List commits on master

Lists commits on the master branch of a Bitbucket repository.

List deployments

Lists deployments for a specified Bitbucket repository.

List issues in a repository

Lists issues in a Bitbucket repository with optional filtering by state, priority, kind, or assignee.

List pipelines

Tool to find pipelines in a Bitbucket repository.

List pull requests

Lists pull requests in a specified, accessible Bitbucket repository, optionally filtering by state (OPEN, MERGED, DECLINED).

List pull request tasks

Lists all tasks associated with a pull request in a Bitbucket repository.

List all public repositories

Retrieves a paginated list of all public repositories on Bitbucket.

List repository environments

List all deployment environments configured for a Bitbucket repository.

List repositories in workspace

Lists repositories in a specified Bitbucket workspace, accessible to the authenticated user, with options to filter by role or query string, and sort results.

List repository paths

Lists file and directory entries under a repository path at a given revision, with optional breadth-first recursion via max_depth for repository traversal and scanning.

List snippets

Returns all snippets accessible to the authenticated user.

List tags

Lists tags in a Bitbucket repository with optional server-side filtering by name pattern or commit hash (BBQL) and sorting.

List versions

Lists versions (milestones) in a Bitbucket repository's issue tracker.

List workspace members

Lists all members of a specified Bitbucket workspace; the workspace must exist.

List workspace projects

Lists projects in a specified Bitbucket workspace.

List workspaces

Lists Bitbucket workspaces accessible to the authenticated user, optionally filtered and sorted.

Merge Pull Request

Tool to merge a Bitbucket Cloud pull request via the REST API.

Request Pull Request Changes

Tool to request changes on a pull request as the authenticated user.

Resolve pull request comment

Tool to resolve or reopen a pull request comment thread.

Search code in user repositories

Tool to search for code in the repositories of a specified user.

Update commit insight report

Create or update an insight report for a commit.

Update an issue

Updates an existing issue in a Bitbucket repository by modifying specified attributes; requires `workspace`, `repo_slug`, `issue_id`, and at least one attribute to update.

Update Pull Request

Tool to update an existing pull request's editable fields (e.

Update commit comment

Updates the contents of a comment on a commit.

Update commit report annotation

Creates or updates an individual annotation for a commit report.

Update team pipeline variable

Updates a team-level pipeline configuration variable in Bitbucket.

Update user pipeline variable

Updates a user-level pipeline variable for Bitbucket pipelines.

FAQ

Frequently asked questions

With a standalone Bitbucket MCP server, the agents and LLMs can only access a fixed set of Bitbucket tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Bitbucket and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Claude Code fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Bitbucket tools.

Yes, absolutely. You can configure which Bitbucket scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Bitbucket data and credentials are handled as safely as possible.

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