Atlassian Bitbucket MCP Server

This project provides a Model Context Protocol (MCP) server that acts as a bridge between AI assistants (like Anthropic's Claude, Cursor AI, or other MCP-compatible clients) and your Atlassian Bitbucket instance. It allows AI to securely access and interact with your repositories, pull requests, and workspaces in real time.

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Overview

What is MCP?

Model Context Protocol (MCP) is an open standard that allows AI systems to securely and contextually connect with external tools and data sources.

This server implements MCP specifically for Bitbucket Cloud, bridging your Bitbucket data with AI assistants.

Why Use This Server?

• Minimal Input, Maximum Output Philosophy: Simple identifiers like workspaceSlug and repoSlug are all you need. Each tool returns comprehensive details without requiring extra flags.

• Rich Code Visualization: Get detailed insights into repositories and code changes with file statistics, diff views, and smart context around code modifications.

• Secure Local Authentication: Credentials are never stored in the server. The server runs locally, so your tokens never leave your machine and you can request only the permissions you need.

• Intuitive Markdown Responses: All responses use well-structured Markdown for readability with consistent formatting and navigational links.

• Full Bitbucket Integration: Access workspaces, repositories, pull requests, comments, code search, and more through a unified interface.

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Getting Started

Prerequisites

• Node.js (>=18.x): Download
• Bitbucket Cloud Account

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Step 1: Authenticate

Choose one of the following authentication methods:

Option A: Bitbucket App Password (Recommended)

Generate one from Bitbucket App Passwords. Minimum permissions:

• Workspaces: Read
• Repositories: Read
• Pull Requests: Read

Option B: Atlassian API Token

Generate one from Atlassian API Tokens.

Note: While the server may function using an Atlassian API Token (via the standard ATLASSIAN_* variables) due to the shared Atlassian account system, Bitbucket App Passwords are the strongly recommended and officially supported method for this integration. App Passwords allow for more granular, Bitbucket-specific permission scopes, enhancing security compared to potentially broader-scoped API Tokens.

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Step 2: Configure Credentials

Method A: MCP Config File (Recommended)

Create or edit ~/.mcp/configs.json:

Using Bitbucket App Password:

{
	"bitbucket": {
		"environments": {
			"ATLASSIAN_BITBUCKET_USERNAME": "<your_username>",
			"ATLASSIAN_BITBUCKET_APP_PASSWORD": "<your_app_password>"
		}
	}
}

Using Atlassian API Token:

{
	"bitbucket": {
		"environments": {
			"ATLASSIAN_SITE_NAME": "bitbucket",
			"ATLASSIAN_USER_EMAIL": "<your_email>",
			"ATLASSIAN_API_TOKEN": "<your_api_token>"
		}
	}
}

Note: For backward compatibility, the server will also recognize configurations under the full package name (@aashari/mcp-server-atlassian-bitbucket), the unscoped package name (mcp-server-atlassian-bitbucket), or the atlassian-bitbucket format if the recommended bitbucket key is not found. However, using the short bitbucket key is preferred for new configurations.

Method B: Environment Variables

Pass credentials directly when running the server:

ATLASSIAN_BITBUCKET_USERNAME="<your_username>" \
ATLASSIAN_BITBUCKET_APP_PASSWORD="<your_app_password>" \
npx -y @aashari/mcp-server-atlassian-bitbucket

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Step 3: Connect Your AI Assistant

Configure your MCP-compatible client to launch this server.

Claude / Cursor Configuration:

{
	"mcpServers": {
		"bitbucket": {
			"command": "npx",
			"args": ["-y", "@aashari/mcp-server-atlassian-bitbucket"]
		}
	}
}

This configuration launches the server automatically at runtime.

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Tools

This section covers the MCP tools available when using this server with an AI assistant. Note that MCP tools use snake_case for tool names and camelCase for parameters.

bb_ls_workspaces

List available Bitbucket workspaces.

{}

or:

{ "query": "devteam" }

"Show me all my Bitbucket workspaces."

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bb_get_workspace

Get full details for a specific workspace.

{ "workspaceSlug": "acme-corp" }

"Tell me more about the 'acme-corp' workspace."

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bb_ls_repos

Lists repositories in a workspace. Filters by role, projectKey, query (name/description). Supports sorting and pagination.

{ "workspaceSlug": "acme-corp", "projectKey": "PROJ" }

"List repositories in 'acme-corp' for project PROJ."

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bb_get_repo

Get details of a specific repository, including owner, main branch name, comment/task counts, and recent PRs.

{ "workspaceSlug": "acme-corp", "repoSlug": "backend-api" }

"Show me the 'backend-api' repository in 'acme-corp'."

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bb_search

Search Bitbucket content. Scope with scope ('repositories', 'pullrequests', 'commits', 'code', 'all'). Code scope supports language and extension filters. The 'all' scope includes a header indicating which scope returned results.

Code (filtered):

{
	"workspaceSlug": "acme-corp",
	"query": "Logger",
	"scope": "code",
	"language": "typescript"
}

"Search for 'Logger' in TypeScript files within the 'acme-corp' workspace."

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bb_ls_prs

List pull requests in a repository.

{ "workspaceSlug": "acme-corp", "repoSlug": "frontend-app", "state": "OPEN" }

"Show open PRs in 'frontend-app'."

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bb_get_pr

Get full details of a pull request, including code diffs, file changes, comment/task counts.

{ "workspaceSlug": "acme-corp", "repoSlug": "frontend-app", "prId": "42" }

"Get PR #42 from 'frontend-app' with all code changes."

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bb_ls_pr_comments

List comments on a specific pull request. Inline comments include code snippets.

{ "workspaceSlug": "acme-corp", "repoSlug": "frontend-app", "prId": "42" }

"Show me all comments on PR #42, including code context for inline comments."

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bb_create_pr_comment

Add a comment to a pull request.

General:

{
	"workspaceSlug": "acme-corp",
	"repoSlug": "frontend-app",
	"prId": "42",
	"content": "Looks good."
}

Inline:

{
	"workspaceSlug": "acme-corp",
	"repoSlug": "frontend-app",
	"prId": "42",
	"content": "Consider refactoring.",
	"inline": { "path": "src/utils.js", "line": 42 }
}

"Add a comment to PR #42 on line 42."

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bb_create_pr

Create a new pull request.

{
	"workspaceSlug": "acme-corp",
	"repoSlug": "frontend-app",
	"title": "Add login screen",
	"sourceBranch": "feature/login"
}

"Create a PR from 'feature/login' to 'main'."

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bb_create_branch

Create a new branch from a source branch or commit.

{
	"workspaceSlug": "acme-corp",
	"repoSlug": "frontend-app",
	"newBranchName": "feature/new-feature",
	"sourceBranchOrCommit": "main"
}

"Create branch 'feature/new-feature' from 'main' in 'frontend-app'."

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bb_get_commit_history

Retrieve the commit history for a repository.

{
	"workspaceSlug": "acme-corp",
	"repoSlug": "backend-api"
}

or (filter by branch and path):

{
	"workspaceSlug": "acme-corp",
	"repoSlug": "backend-api",
	"revision": "develop",
	"path": "src/main/java/com/acme/service/UserService.java"
}

"Show me the commit history for the 'backend-api' repository." "Get commits on the develop branch for UserService.java."

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Command-Line Interface (CLI)

The CLI uses kebab-case for commands (e.g., ls-workspaces) and options (e.g., --workspace-slug).

Quick Use with npx

npx -y @aashari/mcp-server-atlassian-bitbucket ls-workspaces
npx -y @aashari/mcp-server-atlassian-bitbucket get-repo \
  --workspace-slug acme-corp \
  --repo-slug backend-api
npx -y @aashari/mcp-server-atlassian-bitbucket ls-prs \
  --workspace-slug acme-corp \
  --repo-slug frontend-app \
  --state OPEN
npx -y @aashari/mcp-server-atlassian-bitbucket create-pr-comment \
  --workspace-slug acme-corp \
  --repo-slug frontend-app \
  --pr-id 42 \
  --content "Looks good to merge."
npx -y @aashari/mcp-server-atlassian-bitbucket get-commit-history \
  --workspace-slug acme-corp \
  --repo-slug backend-api \
  --revision develop

Install Globally

npm install -g @aashari/mcp-server-atlassian-bitbucket

Then run directly:

mcp-atlassian-bitbucket ls-workspaces
mcp-atlassian-bitbucket get-repo --workspace-slug acme-corp --repo-slug backend-api

Discover More CLI Options

Use --help to see flags and usage for all available commands:

mcp-atlassian-bitbucket --help

Or get detailed help for a specific command:

mcp-atlassian-bitbucket ls-workspaces --help
mcp-atlassian-bitbucket get-workspace --help
mcp-atlassian-bitbucket ls-repos --help
mcp-atlassian-bitbucket get-repo --help
mcp-atlassian-bitbucket ls-prs --help
mcp-atlassian-bitbucket get-pr --help
mcp-atlassian-bitbucket ls-pr-comments --help
mcp-atlassian-bitbucket create-pr-comment --help
mcp-atlassian-bitbucket create-pr --help
mcp-atlassian-bitbucket search --help
mcp-atlassian-bitbucket get-commit-history --help
mcp-atlassian-bitbucket create-branch --help

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License

ISC License