Advanced GitLab MCP server

Advanced GitLab MCP server — 44 tools across 18 entity types with CQRS architecture, OAuth 2.1, and multiple transport modes.

Quick Start

{
  "mcpServers": {
    "gitlab": {
      "command": "npx",
      "args": ["-y", "@structured-world/gitlab-mcp"],
      "env": {
        "GITLAB_TOKEN": "your_gitlab_token",
        "GITLAB_API_URL": "https://gitlab.com"
      }
    }
  }
}

Requirements: Node.js >= 24

Highlights

• 44 tools across 18 entity types — projects, merge requests, pipelines, work items, wiki, and more
• CQRS architecture — browse_* for queries, manage_* for commands
• Connection resilience — Bounded startup, auto-reconnect with exponential backoff, disconnected mode when GitLab is unreachable
• Multi-instance support — Connect to multiple GitLab instances with per-instance OAuth and rate limiting
• Multiple transports — stdio, SSE, StreamableHTTP
• OAuth 2.1 — Per-user authentication via Claude Custom Connector
• Read-only mode — Safe operation for production environments
• Auto-discovery — Detects GitLab config from git remotes
• Fine-grained control — Enable/disable tool groups, filter actions, customize descriptions
• Docker support — ghcr.io/structured-world/gitlab-mcp:latest

Documentation

Full documentation is available at gitlab-mcp.sw.foundation

Auto-generated Tool Reference

For the complete tool reference with parameters:

# View locally
yarn list-tools --detail

# Generate documentation
yarn list-tools --export --toc > docs/tools/api-reference.md

See the Full API Reference for the auto-generated tool documentation.

Docker

# HTTP mode
docker run -e PORT=3002 -e GITLAB_TOKEN=your_token -p 3333:3002 \
  ghcr.io/structured-world/gitlab-mcp:latest

# stdio mode
docker run -i --rm -e GITLAB_TOKEN=your_token \
  ghcr.io/structured-world/gitlab-mcp:latest

Connection Resilience

The server handles GitLab connectivity issues gracefully:

• Bounded startup — Server starts within GITLAB_INIT_TIMEOUT_MS (default 5s) regardless of GitLab availability
• Disconnected mode — When GitLab is unreachable (disconnected/failed state), only the manage_context tool is exposed, with local actions such as whoami, switch_profile, and set_scope for diagnostics. During active reconnect (connecting state), the full tool list remains available so MCP clients don't lose their tool catalog during brief outages. MCP clients are notified of tool availability changes via tools/list_changed
• Auto-reconnect — Exponential backoff reconnection (5s → 60s) with ±10% jitter
• Error classification — Transient errors (network, 5xx, timeouts) trigger auto-reconnect. Auth/config errors at startup transition to failed state (no auto-reconnect). Runtime auth errors from tool calls are forwarded to HealthMonitor.reportError() via classifyError(); the remaining gap is token-revocation/403 detection (#370)
• Instance health monitor — Each monitored instance URL has its own XState state machine. Untracked OAuth URLs currently pass through as reachable.

Feature Flags

Contributing

See CONTRIBUTING.md for development setup, testing, and PR guidelines.

Support the Project

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License

Apache License 2.0 — see LICENSE for details.

Based on zereight/gitlab-mcp (MIT). See LICENSE.MIT.