Git Mcp Server

@cyanheads/git-mcp-server A Git MCP server for AI agents. STDIO & Streamable HTTP. 28 Tools · 1 Resource · 1 Prompt

[](./CHANGELOG.md) [](https://github.com/modelcontextprotocol/modelcontextprotocol/blob/main/docs/specification/2025-11-25/changelog.mdx) [](https://modelcontextprotocol.io/) [](./LICENSE) [](https://github.com/cyanheads/git-mcp-server/issues) [](https://www.typescriptlang.org/) [](https://bun.sh/)

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Tools

28 git operations organized into seven categories:

| Category | Tools | Description | | :------------------------ | :----------------------------------------------------------------------------------------------------------------------------- | :------------------------------------------------------------------------------------------------------------------ | | Repository Management | git_init, git_clone, git_status, git_clean | Initialize repos, clone from remotes, check status, clean untracked files | | Staging & Commits | git_add, git_commit, git_diff | Stage changes, create commits, compare changes | | History & Inspection | git_log, git_show, git_blame, git_reflog | View commit history, inspect objects, trace authorship, view ref logs | | Analysis | git_changelog_analyze | Gather git context and instructions for LLM-driven changelog analysis | | Branching & Merging | git_branch, git_checkout, git_merge, git_rebase, git_cherry_pick | Manage branches, switch contexts, integrate changes, apply specific commits | | Remote Operations | git_remote, git_fetch, git_pull, git_push | Configure remotes, fetch updates, synchronize repositories, publish changes | | Advanced Workflows | git_tag, git_stash, git_reset, git_worktree, git_set_working_dir, git_clear_working_dir, git_wrapup_instructions | Tag releases (list/create/delete/verify), stash changes, reset state, manage worktrees, set/clear session directory |

Resources

| Resource | URI | Description | | :------------------------ | :------------------------ | :-------------------------------------------------------------------- | | Git Working Directory | git://working-directory | The current session working directory, set via git_set_working_dir. |

Prompts

| Prompt | Description | Parameters | | :-------------- | :---------------------------------------------------------------------------------------- | :---------------------------- | | Git Wrap-up | Workflow protocol for completing git sessions: review, document, commit, and tag changes. | changelogPath, createTag. |

Getting started

Runtime

Works with both Bun and Node.js. Runtime is auto-detected.

| Runtime | Command | Minimum Version | | ----------- | --------------------------------------- | --------------- | | Node.js | npx @cyanheads/git-mcp-server@latest | >= 20.0.0 | | Bun | bunx @cyanheads/git-mcp-server@latest | >= 1.2.0 |

MCP client configuration

Add the following to your MCP client config (e.g., cline_mcp_settings.json). Update the environment variables to match your setup — especially the git identity fields.

{
  "mcpServers": {
    "git-mcp-server": {
      "type": "stdio",
      "command": "npx",
      "args": ["@cyanheads/git-mcp-server@latest"],
      "env": {
        "MCP_TRANSPORT_TYPE": "stdio",
        "MCP_LOG_LEVEL": "info",
        "GIT_BASE_DIR": "~/Developer/",
        "LOGS_DIR": "~/Developer/logs/git-mcp-server/",
        "GIT_USERNAME": "cyanheads",
        "GIT_EMAIL": "casey@caseyjhand.com",
        "GIT_SIGN_COMMITS": "true"
      }
    }
  }
}

Bun users: replace "command": "npx" with "command": "bunx".

For Streamable HTTP, set MCP_TRANSPORT_TYPE=http and MCP_HTTP_PORT=3015.

Features

Built on mcp-ts-template.

| Feature | Details | | :--------------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | Declarative tools | Define capabilities in single, self-contained files. The framework handles registration, validation, and execution. | | Error handling | Unified McpError system for consistent, structured error responses. | | Authentication | Supports none, jwt, and oauth modes. | | Pluggable storage | Swap backends (in-memory, filesystem, Supabase, Cloudflare KV/R2) without changing business logic. | | Observability | Structured logging (Pino) and optional auto-instrumented OpenTelemetry for traces and metrics. | | Dependency injection | Built with tsyringe for decoupled, testable architecture. | | Cross-runtime | Auto-detects Bun or Node.js and uses the appropriate process spawning method. | | Provider architecture | Pluggable git provider system. Current: CLI. Planned: isomorphic-git for edge deployment. | | Working directory management | Session-specific directory context for multi-repo workflows. | | Configurable git identity | Override author/committer info via environment variables, with fallback to global git config. | | Commit signing | GPG/SSH signing (enabled by default) for commits, merges, rebases, cherry-picks, and tags. Silent fallback to unsigned on failure with signed/signingWarning fields in responses. | | Safety | Destructive operations (git clean, git reset --hard) require explicit confirmation flags. |

Security

• All file paths are validated and sanitized to prevent directory traversal.
• Optional GIT_BASE_DIR restricts operations to a specific directory tree for multi-tenant sandboxing.
• Git commands use validated arguments via process spawning — no shell interpolation.
• JWT and OAuth support for authenticated deployments.
• Optional rate limiting via the DI-managed RateLimiter service.
• All operations are logged with request context for auditing.

Configuration

All configuration is validated at startup in src/config/index.ts. Key environment variables:

| Variable | Description | Default | | :----------------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------ | :---------- | | MCP_TRANSPORT_TYPE | Transport: stdio or http. | stdio | | MCP_SESSION_MODE | HTTP session mode: stateless, stateful, or auto. | auto | | MCP_RESPONSE_FORMAT | Response format: json (LLM-optimized), markdown (human-readable), or auto. | json | | MCP_RESPONSE_VERBOSITY | Detail level: minimal, standard, or full. | standard | | MCP_HTTP_PORT | HTTP server port. | 3015 | | MCP_HTTP_HOST | HTTP server hostname. | 127.0.0.1 | | MCP_HTTP_ENDPOINT_PATH | MCP request endpoint path. | /mcp | | MCP_AUTH_MODE | Authentication mode: none, jwt, or oauth. | none | | STORAGE_PROVIDER_TYPE | Storage backend: in-memory, filesystem, supabase, cloudflare-kv, r2. | in-memory | | OTEL_ENABLED | Enable OpenTelemetry. | false | | MCP_LOG_LEVEL | Minimum log level: debug, info, warn, error. | info | | GIT_SIGN_COMMITS | GPG/SSH signing for commits, merges, rebases, cherry-picks, and tags. Falls back to unsigned on failure (see response signed/signingWarning). | true | | GIT_AUTHOR_NAME | Git author name. Aliases: GIT_USERNAME, GIT_USER. Falls back to global git config. | (none) | | GIT_AUTHOR_EMAIL | Git author email. Aliases: GIT_EMAIL, GIT_USER_EMAIL. Falls back to global git config. | (none) | | GIT_BASE_DIR | Absolute path to restrict all git operations to a specific directory tree. | (none) | | GIT_WRAPUP_INSTRUCTIONS_PATH | Path to custom markdown file with workflow instructions. | (none) | | MCP_AUTH_SECRET_KEY | Required for jwt auth. 32+ character secret key. | (none) | | OAUTH_ISSUER_URL | Required for oauth auth. OIDC provider URL. | (none) |

Running the server

Via package manager (no install)

npx @cyanheads/git-mcp-server@latest

Configure through environment variables or your MCP client config.

Local development

# Build and run
npm run rebuild
npm run start:stdio   # or start:http

# Dev mode with hot reload
npm run dev:stdio     # or dev:http

# Checks and tests
npm run devcheck      # lint, format, typecheck
npm test

Cloudflare Workers

npm run build:worker   # Build the worker bundle
npm run deploy:dev     # Run locally with Wrangler
npm run deploy:prod    # Deploy to Cloudflare

Project structure

| Directory | Purpose | | :-------------------------- | :---------------------------------------------------------------- | | src/mcp-server/tools | Tool definitions (*.tool.ts). Git capabilities live here. | | src/mcp-server/resources | Resource definitions (*.resource.ts). Git context data sources. | | src/mcp-server/transports | HTTP and STDIO transport implementations, including auth. | | src/storage | StorageService abstraction and provider implementations. | | src/services | Git service provider (CLI-based git operations). | | src/container | DI container registrations and tokens. | | src/utils | Logging, error handling, performance, security utilities. | | src/config | Environment variable parsing and validation (Zod). | | tests/ | Unit and integration tests, mirroring src/ structure. |

Response format

Configure output format and verbosity via MCP_RESPONSE_FORMAT and MCP_RESPONSE_VERBOSITY.

JSON format (default, optimized for LLM consumption):

{
  "success": true,
  "branch": "main",
  "staged": ["src/index.ts", "README.md"],
  "unstaged": ["package.json"],
  "untracked": []
}

Markdown format (human-readable):

# Git Status: main

## Staged (2)
- src/index.ts
- README.md

## Unstaged (1)
- package.json

The LLM always receives the complete structured data via responseFormatter — full file lists, metadata, timestamps — regardless of what the client displays. Verbosity controls how much detail is included: minimal (core fields only), standard (balanced), or full (everything).

Development guide

See [AGENTS.md](AGENTS.md) for architecture, tool development patterns, and contribution rules.

Testing

Tests use Bun's test runner with Vitest compatibility.

bun test              # Run all tests
bun test --coverage   # With coverage
bun run devcheck      # Lint, format, typecheck, audit

Roadmap

The server uses a provider-based architecture for git operations:

• CLI provider (current) — Full 28-tool coverage via native git CLI. Requires local git installation.
• Isomorphic git provider (planned) — Pure JS implementation for edge deployment (Cloudflare Workers, Vercel Edge, Deno Deploy). Uses isomorphic-git.
• GitHub API provider (maybe) — Cloud-native operations via GitHub REST/GraphQL APIs, no lo

…

Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: cyanheads
• Source: cyanheads/git-mcp-server
• License: Apache-2.0
• Homepage: https://www.npmjs.com/package/@cyanheads/git-mcp-server

Install and usage instructions live in the source repository linked above.