# GitLab MCP Server

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[English](./README.md) | [한국어](./README.ko.md) | [简体中文](./README.zh-CN.md) | [Português (Brasil)](./README.pt-BR.md)

📖 **[Documentation →](https://zereight.github.io/gitlab-mcp/)** Setup guides, environment variables, and the full tool reference live on the hosted docs site.

Install `@zereight/mcp-gitlab` with the recommended local personal-access-token setup. These commands use the same arguments as the [Claude Code](./docs/clients/claude-code.md) and [Codex](./docs/clients/codex.md) guides.

Install the `zereight-mcp-gitlab` binary first with `npm install -g @zereight/mcp-gitlab`, or Homebrew `brew tap zereight/gitlab-mcp https://github.com/zereight/gitlab-mcp` and `brew install zereight/gitlab-mcp/zereight-mcp-gitlab`.

Read the token without echo, then export it. The shell history keeps the variable name.

```bash
read -rs GITLAB_PERSONAL_ACCESS_TOKEN && export GITLAB_PERSONAL_ACCESS_TOKEN
```

| Client       | Install                                                                                                                                                                                          |
| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Claude Code  | `claude mcp add gitlab --transport stdio --scope local --env GITLAB_PERSONAL_ACCESS_TOKEN="$GITLAB_PERSONAL_ACCESS_TOKEN" --env GITLAB_API_URL=https://gitlab.com/api/v4 -- zereight-mcp-gitlab` |
| Codex        | `codex mcp add gitlab --env GITLAB_PERSONAL_ACCESS_TOKEN="$GITLAB_PERSONAL_ACCESS_TOKEN" --env GITLAB_API_URL=https://gitlab.com/api/v4 -- zereight-mcp-gitlab`                                  |
| Cursor       | [Cursor setup guide](./docs/clients/cursor.md)                                                                                                                                    |
| VS Code      | [VS Code setup guide](./docs/clients/vscode.md)                                                                                                                                   |
| JSON clients | [JSON-based MCP clients setup guide](./docs/clients/json-clients.md)                                                                                                              |

[![Star History Chart](./assets/star-history.png)](https://www.star-history.com/?repos=zereight%2Fgitlab-mcp&type=date&legend=top-left)

## @zereight/mcp-gitlab

**Agent-workflow-optimized GitLab MCP** — manage projects, merge requests, issues, pipelines, wiki, releases, tags, milestones, and more through stdio, SSE, and Streamable HTTP.

Supports PAT, OAuth, read-only mode, dynamic API URLs, and remote authorization for VS Code, Claude, Cursor, Copilot, and other MCP clients.

### Why use this GitLab MCP?

- **276 tools: 274 in toolsets + `execute_graphql` + `discover_tools`** — start with a small toolset; activate more at runtime without CQRS-style grouping
- **MR 2-step review** — `list_merge_request_changed_files` → batched `get_merge_request_file_diff`
- **Agent Skill built in** — workflow guidance in `skills/gitlab-mcp/`
- **Flexible auth** — Personal Access Token, local OAuth2 browser flow, MCP OAuth proxy, and per-request remote authorization
- **Multiple transports** — stdio for local clients, SSE for legacy clients, and Streamable HTTP for modern remote deployments
- **Client-friendly setup** — examples for Claude Code, Codex, Antigravity, OpenCode, Copilot, Cline, Roo Code, Cursor, Kilo Code, and Amp Code
- **Self-hosted ready** — works with custom GitLab instances, proxy settings, and dynamic API URL routing
- **JMESPath result filtering** — optional `jmespath` on tool calls (see `tools/list`) shrinks JSON results without changing GitLab API requests; when response masking is enabled, JMESPath runs on masked data.

### How we compare

|                | @zereight/mcp-gitlab                                              | GitLab MCP A (community CQRS-style)          | GitLab official MCP server                                                                                                                       |
| -------------- | ----------------------------------------------------------------- | -------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------ |
| **Best for**   | AI agent workflows                                                | Enterprise multi-instance / grouped tools    | Built into GitLab, no separate install                                                                                                           |
| **Tool model** | 276 tools: 274 in toolsets + `execute_graphql` + `discover_tools` | ~50–60 grouped `browse_*` / `manage_*` tools | Toolsets chosen with an HTTP header                                                                                                              |
| **MR review**  | 2-step batched diff                                               | Varies                                       | `get_merge_request` with diffs                                                                                                                   |
| **Node.js**    | >=18.17                                                           | Often >=24                                   | Node.js 20+ for stdio via `mcp-remote`                                                                                                           |
| **License**    | MIT                                                               | Varies                                       | Part of GitLab                                                                                                                                   |

[Full comparison with GitLab MCP A →](./docs/comparison/community-gitlab-mcp-a.md)

GitLab also ships an [official MCP server](https://docs.gitlab.com/user/model_context_protocol/mcp_server/).

- Free, Premium, and Ultimate. Moved from Premium to Free in GitLab 19.2. Generally available in GitLab 19.5.
- On GitLab.com, a top-level group Owner allows access to the MCP server. On GitLab Self-Managed and GitLab Dedicated, an administrator controls the instance setting. Default rules are on the official page.
- Remote clients use HTTP `https://<gitlab.example.com>/api/v4/mcp` with OAuth 2.0 dynamic client registration.
- stdio goes through `mcp-remote` and needs Node.js 20 or later.
- Toolsets use the `X-Gitlab-Enabled-Mcp-Server-Toolsets` header. An optional `X-Gitlab-Mcp-Server-Tool-Name-Prefix` header keeps the first 32 characters of a tool-name prefix.

Quick start: choose either Personal Access Token or OAuth2 setup below, install `@zereight/mcp-gitlab`, and use `zereight-mcp-gitlab` in your MCP client configuration.

### Client Setup Guides

- [Claude Code Setup Guide](./docs/clients/claude-code.md)
- [VS Code Setup Guide](./docs/clients/vscode.md)
- [GitHub Copilot Setup Guide](./docs/clients/copilot.md)
- [Codex Setup Guide](./docs/clients/codex.md)
- [Cursor Setup Guide](./docs/clients/cursor.md)
- [JSON-Based MCP Clients Setup Guide](./docs/clients/json-clients.md) - for Factory AI Droid, OpenClaw, and OpenCode style clients
- [OAuth2 Authentication Setup Guide](./docs/auth/oauth-setup.md)
- [Environment Variables Reference](./docs/configuration/environment-variables.md)
- [Stateless Mode — Multi-Pod HPA](./docs/configuration/stateless-mode.md)
- [Custom Agents and Multiple PAT Setup](./docs/auth/custom-agent-multiple-pat.md)

## Usage

### Setup Overview

#### Authentication Methods

The server supports four authentication methods:

**For local/desktop use** (most common):

1. **Personal Access Token** (`GITLAB_PERSONAL_ACCESS_TOKEN` or `GITLAB_PERSONAL_ACCESS_TOKEN_FILE`) — simplest setup
2. **OAuth2 — Local Browser** (`GITLAB_USE_OAUTH`) — recommended for better security

**For server/remote deployments**:

3. **OAuth2 — MCP Proxy** (`GITLAB_MCP_OAUTH`) — for remote MCP clients such as Claude.ai
4. **Remote Authorization** (`REMOTE_AUTHORIZATION`) — multi-user deployments where each caller provides their own token

#### Quick setup paths

- **Claude Code**: see [Claude Code Setup Guide](./docs/clients/claude-code.md)
- **VS Code**: see [VS Code Setup Guide](./docs/clients/vscode.md)
- **GitHub Copilot**: see [GitHub Copilot Setup Guide](./docs/clients/copilot.md)
- **Codex**: see [Codex Setup Guide](./docs/clients/codex.md)
- **Cursor**: see [Cursor Setup Guide](./docs/clients/cursor.md)
- **Factory AI Droid / OpenClaw / OpenCode style clients**: see [JSON-Based MCP Clients Setup Guide](./docs/clients/json-clients.md)
- **OAuth browser flow details**: see [OAuth2 Authentication Setup Guide](./docs/auth/oauth-setup.md)
- **OAuth without a localhost callback** (SSO, remote shell, background clients): run `zereight-mcp-gitlab auth` (GitLab 17.9+ device flow; 17.2–17.8 need `oauth2_device_grant_flow`), then start the server with `GITLAB_USE_OAUTH=true`. See [standalone device-flow command](./docs/auth/oauth-setup.md#standalone-device-flow-auth-command).

For the simplest local setup, start with a Personal Access Token. For browser-based local auth, use OAuth2. For remote or multi-user deployments, continue to the MCP OAuth and Remote Authorization sections later in this README.

Install the server once:

```shell
brew tap zereight/gitlab-mcp https://github.com/zereight/gitlab-mcp
brew install zereight/gitlab-mcp/zereight-mcp-gitlab
```

Or with npm:

```shell
npm install -g @zereight/mcp-gitlab
```

Or with Nix, by adding this flake to your own:

```nix
# flake.nix
inputs.gitlab-mcp.url = "github:zereight/gitlab-mcp";

# wherever you configure your MCP client:
command = lib.getExe inputs.gitlab-mcp.packages.${system}.default;
```

The store path is pinned by your lock file; update it with `nix flake update gitlab-mcp`.

The examples use `zereight-mcp-gitlab`, a less collision-prone alias for the legacy `mcp-gitlab` binary. If your MCP client cannot find it, use the absolute path from `which zereight-mcp-gitlab`.

No global install? Pin `npx` to the previous stable release (the version these docs recommend), for example `npx -y @zereight/mcp-gitlab@2.3.0`. If you always want the newest release, use `npx -y @zereight/mcp-gitlab@latest` instead. The server prints a notice to stderr on startup when a newer version is available (disable with `GITLAB_DISABLE_VERSION_CHECK=true`).

#### Using CLI Arguments (for clients with env var issues)

Some MCP clients (like GitHub Copilot CLI) have issues with environment variables. Use CLI arguments instead:

```json
{
  "mcpServers": {
    "gitlab": {
      "command": "zereight-mcp-gitlab",
      "args": ["--token=YOUR_GITLAB_TOKEN", "--api-url=https://gitlab.com/api/v4"],
      "tools": ["*"]
    }
  }
}
```

**Available CLI arguments:**

- `--token` - GitLab Personal Access Token (replaces `GITLAB_PERSONAL_ACCESS_TOKEN`)
- `--api-url` - GitLab API URL (replaces `GITLAB_API_URL`)
- `--read-only=true` - Deprecated (removed in next major (v3.0.0)); use `--permission-mode=readonly` instead (replaces `GITLAB_READ_ONLY_MODE`)
- `--permission-mode` - Permission level: `readonly`, `modify` (no delete or teardown tools), or `full` (replaces `GITLAB_PERMISSION_MODE`, default `full`)
- `--toolsets=all` - Enable named toolsets except the explicit-only `api` toolset (replaces `GITLAB_TOOLSETS`; unset uses the lean `core` default). `gitlab_api_request` needs `--toolsets=api`
- `--tools=list_issues` - Add individual tools (replaces `GITLAB_TOOLS`)
- `--use-wiki=true` - Deprecated (removed in next major (v3.0.0)); use `--toolsets=core,wiki` instead (replaces `USE_GITLAB_WIKI`)
- `--use-milestone=true` - Deprecated (removed in next major (v3.0.0)); use `--toolsets=core,milestones` instead (replaces `USE_MILESTONE`)
- `--use-pipeline=true` - Deprecated (removed in next major (v3.0.0)); use `--toolsets=core,pipelines` and append `validate_ci_lint,validate_project_ci_lint` to the existing `--tools` list (or set `--tools=validate_ci_lint,validate_project_ci_lint` when that list is unset) (replaces `USE_PIPELINE`)
- `--disable-version-check=true` - Disable the startup new-version notice (replaces `GITLAB_DISABLE_VERSION_CHECK`)
- `--masking-enabled=true` - Enable text-response masking (replaces `GITLAB_MASKING_ENABLED`)
- `--masking-config` - Path to a masking configuration file (replaces `GITLAB_MASKING_CONFIG`)
- `--masking-policy-file` - Path to a protected managed-policy file (replaces `GITLAB_MASKING_POLICY_FILE`)
- `--masking-workspace-dir` - Directory used to resolve masking files (replaces `GITLAB_MASKING_WORKSPACE_DIR`)
- `--download-dir` - Directory `download_attachment` saves files under (replaces `GITLAB_DOWNLOAD_DIR`; default `.gitlab-mcp-downloads`)
- `--compact-results=true` - Truncate oversized MCP tool replies and attach a CLI command for the full payload (replaces `GITLAB_MCP_COMPACT_RESULTS`; default off)
- `--compact-result-chars` - Character threshold for compacting (replaces `GITLAB_MCP_COMPACT_RESULT_CHARS`; default `4000`)
- `--compact-tools` - Comma-separated tool names to compact when oversized, without turning global compact on (replaces `GITLAB_MCP_COMPACT_TOOLS`)
- `--tool-profile` - `full` (default) or `slim`. `slim` drops draft notes, emoji reactions, labels, CI catalog tools, and `create_group` from the initial list. Ignored when `GITLAB_TOOLSETS` is set (replaces `GITLAB_TOOL_PROFILE`)

If you already set `GITLAB_TOOLSETS` or `--toolsets`, append `wiki`, `milestones`, or `pipelines` to that list instead of replacing it. If you already set `GITLAB_TOOLS` or `--tools`, append `validate_ci_lint` and `validate_project_ci_lint` to that list instead of replacing it. An explicit list replaces the default `core` toolset; it does not merge.

CLI arguments take precedence over environment variables.

`zereight-mcp-gitlab auth` is a subcommand (not an MCP server flag). It runs GitLab device flow and exits. See [CLI Arguments](./docs/getting-started/cli-arguments.md#auth).

The same binary is also a `gh`-style GitLab CLI (`tool <name>` or curated forms such as `mr list`). **No MCP registration is needed** — set a PAT, or run `auth` and set `GITLAB_USE_OAUTH=true`: see [CLI without MCP](./docs/getting-started/cli-without-mcp.md). Use it for the full payload in a terminal. MCP replies stay in the chat unless you set `GITLAB_MCP_COMPACT_RESULTS=true` (or `--compact-results`), which replaces oversized tool replies with a preview and a CLI command. Human CLI is never compacted. Same permission mode, toolsets, denied-tools regex, and tool-policy filters. Destructive tools and `GITLAB_TOOL_POLICY_APPROVE` tools need `--yes`. See [Human CLI](./docs/getting-started/cli-arguments.md#human-cli).

> **Fine-grained tool filtering:** use `GITLAB_PERMISSION_MODE=modify` to allow create/update while
> blocking every delete tool and the destructive teardown tools (`cancel_pipeline`,
> `cancel_pipeline_job`, `stop_environment`, `stop_stale_environments`, `unprotect_branch`,
> `unprotect_tag`) —
> including destructive mutations (deletion and teardown verbs) through `execute_graphql` and
> `push_files` `delete`/`move` actions — or `GITLAB_PERMISSION_MODE=readonly` for read-only
> access. You can also
> enable toolset groups with `GITLAB_TOOLSETS=<group,…>`, allow-list individual tools with
> `GITLAB_TOOLS=<tool,…>` (e.g. read-only groups plus a few specific write tools), and
> deny-list by pattern with `GITLAB_DENIED_TOOLS_REGEX`. The legacy `USE_GITLAB_WIKI` /
> `USE_MILESTONE` / `USE_PIPELINE` flags are deprecated (removed in next major (v3.0.0)).
> Use `GITLAB_TOOLSETS=core,wiki`, `core,milestones`, or `core,pipelines`
> (`USE_PIPELINE` also needs `validate_ci_lint,validate_project_ci_lint` appended to an existing `GITLAB_TOOLS` list instead of replacing it).
> If you already set `GITLAB_TOOLSETS`, append the toolset to your existing list instead of replacing it.
> If `GITLAB_TOOLS` is unset, set `GITLAB_TOOLS=validate_ci_lint,validate_project_ci_lint`. If it is already set, append `validate_ci_lint,validate_project_ci_lint` instead of replacing that list.
> See [Tools Reference](./docs/tools/index.md#feature-toggles) and
> [Environment Variables](./docs/configuration/environment-variables.md).

> [!CAUTION]
> `gitlab_api_request` (toolset `api`) bypasses `GITLAB_ALLOWED_GROUPS` and other group restrictions, project allowlists, tool-level restrictions (`GITLAB_TOOLS`, `GITLAB_DENIED_TOOLS_REGEX` on other tools), and individual tool safety checks. The full token permission scope is exposed. Prompt injection can drive this tool. Operators who rely on these restrictions must NOT enable it.
> Enable it only by listing `api` in `GITLAB_TOOLSETS` (`GITLAB_TOOLSETS=all`, `discover_tools`, `GITLAB_TOOLS`, legacy `USE_*` flags, and `GITLAB_TOOL_PROFILE` do not). `GITLAB_ALLOWED_PROJECT_IDS` is checked only for `/projects/:id` paths. Endpoints such as `/search`, `/users`, `/groups/:id`, and `/runners` are not constrained. `GITLAB_PROJECT_ID` and OAuth group allowlists are not enforced.

- sse

Pass the variable name only. The Docker client copies the exported `GITLAB_PERSONAL_ACCESS_TOKEN` into the container.

```shell
docker run -i --rm \
  -e HOST=0.0.0.0 \
  -e GITLAB_PERSONAL_ACCESS_TOKEN \
  -e GITLAB_API_URL="https://gitlab.com/api/v4" \
  -e GITLAB_PERMISSION_MODE=readonly \
  -e GITLAB_TOOLSETS=core,wiki,milestones,pipelines \
  -e SSE=true \
  -e SSE_AUTH_TOKEN=your_mcp_sse_token \
  -p 3333:3002 \
  zereight050/gitlab-mcp
```

```json
{
  "mcpServers": {
    "gitlab": {
      "type": "sse",
      "url": "http://localhost:3333/sse",
      "headers": {
        "Authorization": "Bearer your_mcp_sse_token"
      }
    }
  }
}
```

- streamable-http

```shell
docker run -i --rm \
  -e HOST=0.0.0.0 \
  -e REMOTE_AUTHORIZATION=true \
  -e GITLAB_API_URL="https://gitlab.com/api/v4" \
  -e GITLAB_PERMISSION_MODE=readonly \
  -e GITLAB_TOOLSETS=core,wiki,milestones,pipelines \
  -e STREAMABLE_HTTP=true \
  -p 3333:3002 \
  zereight050/gitlab-mcp
```

```json
{
  "mcpServers": {
    "gitlab": {
      "type": "streamable-http",
      "url": "http://localhost:3333/mcp",
      "headers": {
        "Authorization": "Bearer glpat-..."
      }
    }
  }
}
```

#### Using MCP OAuth Proxy (`GITLAB_MCP_OAUTH`)

> **For server/remote deployments only.** This mode requires the MCP server to be deployed with a publicly accessible HTTPS URL. For local/desktop use, see `GITLAB_USE_OAUTH` above.

For remote MCP clients that support the MCP OAuth specification (e.g. Claude.ai).
The server acts as a full OAuth 2.0 authorization server — unauthenticated requests
receive a `401 + WWW-Authenticate` response, which triggers the OAuth browser flow
automatically on the client side.

Remote MCP clients such as OpenCode, MCPJam, and Claude.ai can send their own
callback URL during authorization. If you cannot register every client callback
URL in GitLab, enable `GITLAB_OAUTH_CALLBACK_PROXY=true`. With callback proxy
mode, GitLab only needs one registered redirect URI: `{MCP_SERVER_URL}/callback`.

`GITLAB_OAUTH_REDIRECT_URI` is for local OAuth (`GITLAB_USE_OAUTH`) only. It does
not override remote MCP OAuth client callback URLs and should not be used to fix
remote `Unregistered redirect_uri` errors.

This variable exists because the local OAuth flow starts a browser on the same
machine as the MCP server and listens for the callback on a local HTTP server,
for example `http://127.0.0.1:8888/callback`.

Remote MCP OAuth is different. In `GITLAB_MCP_OAUTH=true` mode, the MCP client
provides its own callback URL during `/authorize`. `GITLAB_OAUTH_REDIRECT_URI`
does not replace that client-provided URL.

| Mode             | Enable with             | Callback variable                  | GitLab redirect URI                                     |
| ---------------- | ----------------------- | ---------------------------------- | ------------------------------------------------------- |
| Local OAuth      | `GITLAB_USE_OAUTH=true` | `GITLAB_OAUTH_REDIRECT_URI`        | `http://127.0.0.1:8888/callback` or your local callback |
| Remote MCP OAuth | `GITLAB_MCP_OAUTH=true` | `GITLAB_OAUTH_CALLBACK_PROXY=true` | `{MCP_SERVER_URL}/callback`                             |

Use `GITLAB_OAUTH_REDIRECT_URI` only when the MCP server itself owns the local
browser callback. Use `GITLAB_OAUTH_CALLBACK_PROXY=true` when a remote MCP client
owns the callback URL.

**How it works**: You deploy this MCP server somewhere with a public HTTPS URL. MCP
clients connect to `{MCP_SERVER_URL}/mcp`. The server handles the OAuth 2.0 flow,
exchanging credentials with GitLab on behalf of the client.

**Prerequisites**:

1. A publicly accessible HTTPS server URL (`MCP_SERVER_URL`) — use [ngrok](https://ngrok.com) for local testing
2. A pre-registered GitLab OAuth application with `api` (or `read_api`) scopes
   — Go to `Admin area` → `Applications`, set Redirect URI to `{MCP_SERVER_URL}/callback`

| Environment Variable          | Required | Description                                                                                                                             |
| ----------------------------- | -------- | --------------------------------------------------------------------------------------------------------------------------------------- |
| `GITLAB_MCP_OAUTH`            | ✅       | Set to `true` to enable                                                                                                                 |
| `GITLAB_API_URL`              | ✅       | GitLab API base URL                                                                                                                     |
| `GITLAB_OAUTH_APP_ID`         | ✅       | GitLab OAuth Application ID                                                                                                             |
| `MCP_SERVER_URL`              | ✅       | Public HTTPS URL of this MCP server                                                                                                     |
| `STREAMABLE_HTTP`             | ✅       | Must be `true`                                                                                                                          |
| `GITLAB_OAUTH_CALLBACK_PROXY` | optional | Set to `true` to use the MCP server's fixed `/callback` URL                                                                             |
| `GITLAB_OAUTH_ALLOWED_REDIRECT_URIS` | optional | Client callback URLs that callback proxy mode will redirect to (default: Claude, ChatGPT, Cursor and loopback callbacks; `defaults,<url>` to add one) |
| `GITLAB_OAUTH_SCOPES`         | optional | Comma-separated scopes (default: `api,read_api,read_user`)                                                                              |
| `GITLAB_OAUTH_ALLOWED_GROUPS` | optional | Comma-separated group full paths — only members (and subgroup members) may use the server (replaces deprecated `GITLAB_ALLOWED_GROUPS`) |

When `STREAMABLE_HTTP=true`, server-side GitLab credentials (`GITLAB_PERSONAL_ACCESS_TOKEN`, `GITLAB_JOB_TOKEN`, `GITLAB_AUTH_COOKIE_PATH`, or `GITLAB_USE_OAUTH`) require `REMOTE_AUTHORIZATION=true`, `GITLAB_MCP_OAUTH=true`, or `STREAMABLE_HTTP_AUTH_TOKEN`.

> **Troubleshooting `Unregistered redirect_uri`**
>
> Check the `redirect_uri` in the browser URL. If it points to a client callback
> such as `http://127.0.0.1:xxxxx/.../callback`, enable:
>
> ```env
> GITLAB_OAUTH_CALLBACK_PROXY=true
> ```
>
> Do not fix remote MCP OAuth by changing `GITLAB_OAUTH_REDIRECT_URI`. That
> variable is for local OAuth (`GITLAB_USE_OAUTH`) only.

```shell
docker run -i --rm \
  -e HOST=0.0.0.0 \
  -e GITLAB_MCP_OAUTH=true \
  -e GITLAB_OAUTH_CALLBACK_PROXY=true \
  -e STREAMABLE_HTTP=true \
  -e MCP_SERVER_URL=https://your-server.example.com \
  -e GITLAB_API_URL="https://gitlab.com/api/v4" \
  -e GITLAB_OAUTH_APP_ID=your_app_id \
  -p 3000:3002 \
  zereight050/gitlab-mcp
```

MCP client configuration:

```json
{
  "mcpServers": {
    "gitlab": {
      "type": "http",
      "url": "https://your-server.example.com/mcp"
    }
  }
}
```

#### Using Remote Authorization (`REMOTE_AUTHORIZATION`)

> **For server/remote deployments only.** Each HTTP caller provides their own GitLab token directly in request headers — no OAuth flow involved.

For multi-user or multi-tenant deployments where each caller provides their own
GitLab token in the HTTP request header. No OAuth flow — the MCP server forwards
the token to GitLab on behalf of the caller.

**Header priority**: `Private-Token` > `JOB-TOKEN` > `Authorization: Bearer`

| Environment Variable                          | Required | Description                                                                                                             |
| --------------------------------------------- | -------- | ----------------------------------------------------------------------------------------------------------------------- |
| `REMOTE_AUTHORIZATION`                        | ✅       | Set to `true` to enable                                                                                                 |
| `STREAMABLE_HTTP`                             | ✅       | Must be `true`                                                                                                          |
| `ENABLE_DYNAMIC_API_URL`                      | optional | Allow per-request GitLab URL via `X-GitLab-API-URL` header                                                              |
| `GITLAB_ALLOWED_HOSTS`                        | optional | Comma-separated allowed `X-GitLab-API-URL` hosts; `GITLAB_API_URL` hosts are always allowed. Also trusted as download redirect targets (release assets, job artifacts, uploaded attachments); list private-network hosts here |
| `GITLAB_ALLOW_UNAUTHENTICATED_TOOL_DISCOVERY` | optional | Allow unauthenticated `initialize`, `notifications/initialized`, `tools/list`, and `server/discover` only (tool calls still require auth)  |
| `MCP_SERVER_URL` / `MCP_ALLOWED_HOSTS` / `MCP_ALLOWED_ORIGINS` | optional | Allowed public `/mcp` host/origin values for DNS rebinding protection                                   |
| `MCP_TRUST_PROXY`                             | optional | Trust `Forwarded` / `X-Forwarded-*` headers behind a reverse proxy (download URLs, Express `req.ip`, `/mcp` IP rate limits, OAuth rate limits) |

`GITLAB_ALLOW_UNAUTHENTICATED_TOOL_DISCOVERY=true` is intended for MCP gateways
or admin UIs that need to inspect tool metadata before a user provides a GitLab
token. Leave it disabled unless the tool list is safe to expose in your deployment.

When `MCP_SERVER_URL` is not set, remote download URLs fall back to the local
server address. Set `MCP_TRUST_PROXY=true` only if the server is reachable through a
trusted reverse proxy and direct client access to the MCP server is blocked.
This enables Express `trust proxy` for Streamable HTTP and SSE, derives public
download URLs from `Forwarded` / `X-Forwarded-Proto` / `X-Forwarded-Host` /
`X-Forwarded-Prefix`, and keeps OAuth endpoint rate limiting working when
proxies send `X-Forwarded-For` with a client port (for example `1.2.3.4:5678`).
Existing OAuth+proxy deployments must set this explicitly after the flag was
introduced.

**Example request headers**:

```http
Private-Token: glpat-xxxxxxxxxxxxxxxxxxxx
```

or using a Bearer token:

```http
Authorization: Bearer glpat-xxxxxxxxxxxxxxxxxxxx
```

> ⚠️ `REMOTE_AUTHORIZATION` is **not compatible** with SSE transport. `STREAMABLE_HTTP=true` is required.

### Environment Variables

Use the dedicated reference for the full environment variable list:

- [Environment Variables Reference](./docs/configuration/environment-variables.md)

Most users only need one of these starting sets:

- **Local PAT**: `GITLAB_PERSONAL_ACCESS_TOKEN`, `GITLAB_API_URL`
- **Local OAuth**: `GITLAB_USE_OAUTH=true`, `GITLAB_OAUTH_CLIENT_ID`, `GITLAB_OAUTH_REDIRECT_URI`, `GITLAB_API_URL`
- **Remote multi-user HTTP**: `STREAMABLE_HTTP=true`, `REMOTE_AUTHORIZATION=true` (or `GITLAB_MCP_OAUTH=true`), `MCP_TRUST_PROXY=true` (behind a reverse proxy), `MAX_REQUESTS_PER_MINUTE=300`, `MCP_SERVER_URL` or `MCP_ALLOWED_HOSTS`, `HOST`, `PORT`
- **Multiple side-by-side deployments**: set a distinct `MCP_SERVER_NAME` per instance (e.g. `gitlab-selfhosted-readonly`) so clients, logs, and telemetry can tell them apart
- **Multi-pod HPA (stateless)**: above + `OAUTH_STATELESS_MODE=true`, `OAUTH_STATELESS_SECRET` (same across all pods). See [Stateless Mode](./docs/configuration/stateless-mode.md).

Commonly referenced variables:

- `GITLAB_API_URL`
- `GITLAB_PERSONAL_ACCESS_TOKEN`
- `GITLAB_USE_OAUTH`
- `REMOTE_AUTHORIZATION`
- `MCP_TRUST_PROXY`
- `MAX_REQUESTS_PER_MINUTE`
- `MAX_SESSIONS`
- `MCP_ALLOWED_HOSTS`
- `MCP_ALLOWED_ORIGINS`
- `GITLAB_MCP_OAUTH`
- `GITLAB_OAUTH_CALLBACK_PROXY`
- `GITLAB_OAUTH_ALLOWED_REDIRECT_URIS`
- `OAUTH_REGISTER_RATE_LIMIT_PER_HOUR`
- `OAUTH_STATELESS_MODE`
- `OAUTH_STATELESS_SECRET`

The reference document also covers:

- auth and OAuth variables
- MCP OAuth proxy variables
- project and tool filtering variables
- dynamic tool discovery via `discover_tools` (on-demand toolset activation)
- transport and session variables
- proxy and TLS variables

For callback proxy mode details, see [GitLab MCP OAuth Callback Proxy](./docs/auth/oauth-callback-proxy.md).

#### SSE session limits

`GET /sse` is subject to the same remote-transport controls as Streamable HTTP:

- **Capacity:** at most `MAX_SESSIONS` concurrent SSE sessions (default 1000); further connections get `503`.
- **Creation rate limit:** new connections are limited to `MAX_REQUESTS_PER_MINUTE` per client IP (default 60); excess connections get `429`.
- **Idle timeout:** a session that receives no `POST /messages` request for `SESSION_TIMEOUT_SECONDS` (default 1 hour) is closed, so an idle client must reconnect instead of holding a capacity slot. Unlike Streamable HTTP, holding the SSE stream open does **not** count as activity.
- `/health` returns `503` with `status: "degraded"` while the instance is at capacity.

Tune these with [`MAX_SESSIONS`](./docs/configuration/environment-variables.md#max_sessions), `MAX_REQUESTS_PER_MINUTE`, and `SESSION_TIMEOUT_SECONDS`.

### Remote Authorization Setup (Multi-User Support)

When using `REMOTE_AUTHORIZATION=true`, the MCP server can support multiple users, each with their own GitLab token passed via HTTP headers. This is useful for:

- Shared MCP server instances where each user needs their own GitLab access
- IDE integrations that can inject user-specific tokens into MCP requests

**Setup Example:**

```bash
# Start server with remote authorization
docker run -d \
  -e HOST=0.0.0.0 \
  -e STREAMABLE_HTTP=true \
  -e REMOTE_AUTHORIZATION=true \
  -e GITLAB_API_URL="https://gitlab.com/api/v4" \
  -e GITLAB_PERMISSION_MODE=readonly \
  -e SESSION_TIMEOUT_SECONDS=3600 \
  -p 3333:3002 \
  zereight050/gitlab-mcp
```

**Client Configuration:**

Your IDE or MCP client must send one of these headers with each request:

```
Authorization: Bearer glpat-xxxxxxxxxxxxxxxxxxxx
```

or

```
Private-Token: glpat-xxxxxxxxxxxxxxxxxxxx
```

The token is stored per session (identified by `mcp-session-id` header) and reused for subsequent requests in the same session.

#### Remote Authorization Client Configuration Example with Cursor

```json
{
  "mcpServers": {
    "GitLab": {
      "url": "http(s)://<your_mcp_gitlab_server>/mcp",
      "headers": {
        "Authorization": "Bearer glpat-..."
      }
    }
  }
}
```

**Important Notes:**

- Remote authorization **only works with Streamable HTTP transport**
- Each session is isolated - tokens from one session cannot access another session's data
  Tokens are automatically cleaned up when sessions close
- **Session timeout:** Auth tokens expire after `SESSION_TIMEOUT_SECONDS` (default 1 hour) of inactivity. After timeout, the client must send auth headers again. The transport session remains active.
- Each request resets the timeout timer for that session
- **Rate limiting:** `/mcp` requests are limited to `MAX_REQUESTS_PER_MINUTE` per client IP, and per MCP session when using OAuth or remote authorization (default 60). See [environment-variables.md](docs/configuration/environment-variables.md#max_requests_per_minute).
- **Capacity limit:** Server accepts up to `MAX_SESSIONS` concurrent sessions (default 1000)

### MCP OAuth Setup (Claude.ai Native OAuth)

When using `GITLAB_MCP_OAUTH=true`, the server acts as an OAuth proxy to your GitLab
instance. Claude.ai (and any MCP-spec-compliant client) handles the entire browser
authentication flow automatically — no manual Personal Access Token management needed.

**Prerequisites:**

A **pre-registered GitLab OAuth application** is required. GitLab restricts dynamically
registered (unverified) applications to the `mcp` scope, which is insufficient for API
calls (need `api` or `read_api`).

1. Go to your GitLab instance → **Admin Area > Applications** (instance-wide) or **User Settings > Applications** (personal)
2. Create a new application with:
   - **Confidential**: unchecked
   - **Scopes**: `api`, `read_api`, `read_user` (or whichever scopes you intend to request via `GITLAB_OAUTH_SCOPES`)
3. Save and copy the **Application ID** — this is your `GITLAB_OAUTH_APP_ID`

**How it works:**

1. User adds your MCP server URL in Claude.ai
2. Claude.ai discovers OAuth endpoints via `/.well-known/oauth-authorization-server`
3. Claude.ai registers itself via Dynamic Client Registration (`POST /register`) — handled locally by the MCP server (each client gets a virtual client ID)
4. Claude.ai redirects the user's browser to GitLab's login page using the pre-registered OAuth application
5. User authenticates; GitLab redirects back to `https://claude.ai/api/mcp/auth_callback`
6. Claude.ai sends `Authorization: Bearer <token>` on every MCP request
7. Server validates the token with GitLab and stores it per session

**Server setup:**

```bash
docker run -d \
  -e STREAMABLE_HTTP=true \
  -e GITLAB_MCP_OAUTH=true \
  -e GITLAB_OAUTH_APP_ID="your-gitlab-oauth-app-client-id" \
  -e GITLAB_API_URL="https://gitlab.example.com/api/v4" \
  -e MCP_SERVER_URL="https://your-mcp-server.example.com" \
  -p 3002:3002 \
  zereight050/gitlab-mcp
```

For local development (HTTP allowed):

```bash
MCP_DANGEROUSLY_ALLOW_INSECURE_ISSUER_URL=true \
STREAMABLE_HTTP=true \
GITLAB_MCP_OAUTH=true \
GITLAB_OAUTH_APP_ID=your-gitlab-oauth-app-client-id \
MCP_SERVER_URL=http://localhost:3002 \
GITLAB_API_URL=https://gitlab.com/api/v4 \
node build/index.js
```

**Claude.ai configuration:**

```json
{
  "mcpServers": {
    "GitLab": {
      "url": "https://your-mcp-server.example.com/mcp"
    }
  }
}
```

No `headers` field is needed — Claude.ai obtains the token via OAuth automatically.

**Environment variables:**

| Variable                                    | Required | Description                                                                                                                                                                                                         |
| ------------------------------------------- | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `GITLAB_MCP_OAUTH`                          | Yes      | Set to `true` to enable                                                                                                                                                                                             |
| `GITLAB_OAUTH_APP_ID`                       | Yes      | Client ID of the pre-registered GitLab OAuth application                                                                                                                                                            |
| `MCP_SERVER_URL`                            | Yes      | Public HTTPS URL of your MCP server; also allowed for `/mcp` Host/Origin checks                                                                                                                                     |
| `GITLAB_API_URL`                            | Yes      | Your GitLab instance API URL (e.g. `https://gitlab.com/api/v4`)                                                                                                                                                     |
| `STREAMABLE_HTTP`                           | Yes      | Must be `true` (SSE is not supported)                                                                                                                                                                               |
| `GITLAB_OAUTH_SCOPES`                       | No       | Comma-separated GitLab scopes to request (e.g. `api,read_user`). Defaults to `api` (or `read_api` when the effective permission mode is `readonly`). The pre-registered application must be configured with at least these scopes. |
| `OAUTH_REGISTER_RATE_LIMIT_PER_HOUR`        | No       | Per-IP rolling limit for Dynamic Client Registration (`POST /register`). Default `20`/hour; range `1`–`1000`. Raise when clients (e.g. multiple IDE windows) hit registration throttling. Not a GitLab API limit. |
| `MCP_DANGEROUSLY_ALLOW_INSECURE_ISSUER_URL` | No       | Set `true` for local HTTP dev only                                                                                                                                                                                  |

**Important Notes:**

- MCP OAuth **only works with Streamable HTTP transport** (`SSE=true` is incompatible)
- Each user session stores its own OAuth token — sessions are fully isolated
- Session timeout, rate limiting, and capacity limits apply identically to the
  `REMOTE_AUTHORIZATION` mode (`SESSION_TIMEOUT_SECONDS`, `MAX_REQUESTS_PER_MINUTE`,
  `MAX_SESSIONS`)
- **DCR rate limiting:** `POST /register` is limited to `OAUTH_REGISTER_RATE_LIMIT_PER_HOUR`
  per client IP (default 20/hour). Separate from `/mcp` limits and GitLab API quotas.
  See [environment-variables.md](docs/configuration/environment-variables.md#oauth_register_rate_limit_per_hour).
- **Header auth fallback:** when `Private-Token` or `JOB-TOKEN` request headers are
  present, OAuth validation is skipped and the raw token is used directly for that
  session. This allows PATs and CI job tokens to be used alongside the OAuth flow on
  the same server instance. `Authorization: Bearer` is always treated as an OAuth
  token — use `Private-Token` for PAT-based header auth.

## Agent Skill Files

Pre-built skill files are available in [`skills/gitlab-mcp/`](./skills/gitlab-mcp/) for AI agents that support skill/instruction loading (Claude Code, GitHub Copilot, Cursor, etc.).

- **[SKILL.md](./skills/gitlab-mcp/SKILL.md)** — Core guide (~800 tokens) with toolset overview, key workflows, and parameter hints
- **[reference/](./skills/gitlab-mcp/reference/)** — Detailed workflow docs for code review, merge requests, issues, pipelines, and vulnerability triage

Install with the `skills` CLI:

```bash
npx skills add zereight/gitlab-mcp --skill gitlab-mcp-skill
```

Register the skill directory in your AI client to get optimal tool usage guidance without relying solely on the full ListTools response.

## Tools 🛠️

<details>
<summary>Click to expand</summary>

<!-- TOOLS-START -->

1. `merge_merge_request` - Merge a merge request
2. `approve_merge_request` - Approve a merge request
3. `unapprove_merge_request` - Unapprove a merge request
4. `get_merge_request_approval_state` - Get merge request approval details including approvers
5. `get_merge_request_conflicts` - Get the conflicts of a merge request
6. `list_merge_request_pipelines` - List pipelines for a merge request with pagination
7. `execute_graphql` - Execute a GitLab GraphQL query
8. `create_or_update_file` - Create or update a file in a GitLab project
9. `search_repositories` - Search for GitLab projects
10. `create_repository` - Create a new GitLab project
11. `create_group` - Create new group or subgroup
12. `get_file_contents` - Get contents of a file or directory from a GitLab project
13. `push_files` - Push multiple files in a single commit
14. `create_issue` - Create a new issue
15. `create_merge_request` - Create a new merge request
16. `fork_repository` - Fork a project to your account or specified namespace
17. `create_branch` - Create a new branch
18. `get_branch` - Get branch details (commit, protection status)
19. `list_branches` - List branches in project with search filter
20. `delete_branch` - Delete branch from project
21. `list_protected_branches` - List protected branches in a project, supports search filter
22. `get_protected_branch` - Get details of a single protected branch (access levels, force push settings)
23. `protect_branch` - Protect a repository branch (set push/merge/unprotect access levels)
24. `unprotect_branch` - Remove protection from a previously protected branch
25. `update_default_branch` - Change the default branch of a project
26. `get_merge_request` - Get details of a merge request (merge_request_iid or source_branch required). Set include_summaries=true for deployment/commit/approval summaries
27. `get_merge_request_diffs` - Get the changes/diffs of a merge request (merge_request_iid or source_branch required)
28. `list_merge_request_changed_files` - List changed file paths in a merge request without diff content (merge_request_iid or source_branch required)
29. `list_merge_request_diffs` - List merge request diffs with pagination (merge_request_iid or source_branch required)
30. `get_merge_request_file_diff` - Get diffs for specific files from a merge request (merge_request_iid or source_branch required)
31. `list_merge_request_versions` - List all versions of a merge request
32. `get_merge_request_version` - Get a specific version of a merge request
33. `get_branch_diffs` - Get diffs between two branches or commits
34. `update_merge_request` - Update a merge request (merge_request_iid or source_branch required)
35. `create_note` - Create a new note (comment) to an issue or merge request
36. `create_merge_request_thread` - Create a new thread on a merge request
37. `resolve_merge_request_thread` - Resolve a thread on a merge request
38. `mr_discussions` - List discussion items for a merge request
39. `get_merge_request_discussion` - Get a single discussion item for a merge request
40. `delete_merge_request_discussion_note` - Delete a discussion note on a merge request
41. `update_merge_request_discussion_note` - Update a discussion note on a merge request
42. `create_merge_request_discussion_note` - Add a new discussion note to an existing merge request thread
43. `create_merge_request_note` - Add a new note to a merge request
44. `delete_merge_request_note` - Delete an existing merge request note
45. `get_merge_request_note` - Get a specific note for a merge request
46. `get_merge_request_notes` - List notes for a merge request
47. `update_merge_request_note` - Modify an existing merge request note
48. `get_draft_note` - Get a single draft note from a merge request
49. `list_draft_notes` - List draft notes for a merge request
50. `create_draft_note` - Create a draft note for a merge request
51. `update_draft_note` - Update an existing draft note
52. `delete_draft_note` - Delete a draft note
53. `publish_draft_note` - Publish a single draft note
54. `bulk_publish_draft_notes` - Publish all draft notes for a merge request. Optionally sets reviewer_state and posts a summary note (GitLab 19.2+). Can set reviewer_state even with no drafts.
55. `list_merge_request_emoji_reactions` - List all emoji reactions on a merge request
56. `list_merge_request_note_emoji_reactions` - List all emoji reactions on a merge request note. Pass discussion_id for discussion thread replies.
57. `create_merge_request_emoji_reaction` - Add an emoji reaction to a merge request (e.g. thumbsup, rocket, eyes)
58. `delete_merge_request_emoji_reaction` - Remove an emoji reaction from a merge request
59. `create_merge_request_note_emoji_reaction` - Add an emoji reaction to a merge request note. Pass discussion_id for discussion thread replies.
60. `delete_merge_request_note_emoji_reaction` - Remove an emoji reaction from a merge request note. Pass discussion_id for discussion thread replies.
61. `update_issue_note` - Modify an existing issue thread note
62. `create_issue_note` - Add a note to an issue, optionally replying to a discussion thread
63. `list_issue_emoji_reactions` - List all emoji reactions on an issue
64. `list_issue_note_emoji_reactions` - List all emoji reactions on an issue note. Pass discussion_id for discussion thread replies.
65. `create_issue_emoji_reaction` - Add an emoji reaction to an issue (e.g. thumbsup, rocket, eyes)
66. `delete_issue_emoji_reaction` - Remove an emoji reaction from an issue
67. `create_issue_note_emoji_reaction` - Add an emoji reaction to an issue note. Pass discussion_id for discussion thread replies.
68. `delete_issue_note_emoji_reaction` - Remove an emoji reaction from an issue note. Pass discussion_id for discussion thread replies.
69. `list_issues` - List issues (default: created by current user; use scope='all' for all)
70. `my_issues` - List issues assigned to the authenticated user
71. `get_issue` - Get details of a specific issue. Returns the issue with a slim nested milestone by default; set full_response=true for the complete milestone object
72. `update_issue` - Update an issue. Returns a slim confirmation by default; set full_response=true for the complete updated issue object
73. `update_issue_description_patch` - Apply a patch (search/replace or unified diff) to an issue description. Reduces token usage by allowing small changes without sending the full description. Supports dry_run to preview changes and create_note to summarize updates.
74. `delete_issue` - Delete an issue
75. `list_todos` - List GitLab to-do items for the current user
76. `mark_todo_done` - Mark a GitLab to-do item as done
77. `mark_all_todos_done` - Mark all pending GitLab to-do items as done for the current user
78. `list_issue_links` - List all issue links for a specific issue
79. `list_issue_discussions` - List discussions for an issue
80. `get_issue_link` - Get a specific issue link
81. `create_issue_link` - Create an issue link between two issues
82. `delete_issue_link` - Delete an issue link
83. `list_namespaces` - List all namespaces (users and groups) available to the current user. Filter by kind='group' for groups only.
84. `get_namespace` - Get details of a namespace (user or group) by ID or path. Groups are namespaces with kind='group'.
85. `verify_namespace` - Verify if a namespace path exists. Use parent_id to scope the check to a specific parent namespace — required for nested namespaces where the same path may exist under different parents.
86. `get_project` - Get details of a specific project
87. `list_projects` - List projects accessible by the current user
88. `update_project` - Update project settings such as description, visibility, default branch, and feature access levels
89. `list_project_members` - List members of a GitLab project
90. `list_group_members` - List members of a GitLab group with optional name or username search
91. `list_labels` - List labels for a project
92. `get_label` - Get a single label from a project
93. `create_label` - Create a new label in a project
94. `update_label` - Update an existing label in a project
95. `delete_label` - Delete a label from a project
96. `list_group_projects` - List projects in a group
97. `list_wiki_pages` - List wiki pages in a project
98. `get_wiki_page` - Get details of a specific wiki page
99. `create_wiki_page` - Create a wiki page in a project
100. `update_wiki_page` - Update a wiki page in a project
101. `delete_wiki_page` - Delete a wiki page from a project
102. `list_group_wiki_pages` - List wiki pages in a group
103. `get_group_wiki_page` - Get details of a specific group wiki page
104. `create_group_wiki_page` - Create a wiki page in a group
105. `update_group_wiki_page` - Update a wiki page in a group
106. `delete_group_wiki_page` - Delete a wiki page from a group
107. `get_repository_tree` - List files and directories in a repository
108. `list_pipelines` - List pipelines with filtering options
109. `get_pipeline` - Get details of a specific pipeline
110. `get_pipeline_variables` - Get variables configured for a pipeline
111. `get_pipeline_test_report` - Get pipeline test report
112. `get_pipeline_test_report_summary` - Get pipeline test report summary
113. `delete_pipeline` - Delete a pipeline. Requires the project Owner role, cannot be undone, and does not automatically delete child pipelines.
114. `update_pipeline_metadata` - Update pipeline metadata
115. `list_deployments` - List deployments with filtering options
116. `get_deployment` - Get deployment details, including approval_summary, approvals, and pending_approval_count when GitLab provides them
117. `create_deployment` - Create a deployment
118. `update_deployment` - Update a deployment status
119. `delete_deployment` - Delete a deployment
120. `list_deployment_merge_requests` - List merge requests shipped with a deployment
121. `approve_deployment` - Approve or reject a protected-environment deployment
122. `list_environments` - List environments in a project
123. `get_environment` - Get details of a specific environment
124. `update_environment` - Update an environment
125. `delete_environment` - Delete a stopped environment
126. `stop_environment` - Stop an environment
127. `stop_stale_environments` - Stop eligible stale environments; protected environments are excluded and environments are stopped, not deleted
128. `delete_review_app_environments` - Schedule deletion of stopped review-app environments one week later; dry_run defaults to true and actual scheduling requires dry_run=false
129. `list_pipeline_triggers` - List project pipeline trigger tokens
130. `get_pipeline_trigger` - Get a project pipeline trigger
131. `create_pipeline_trigger` - Create a project pipeline trigger
132. `update_pipeline_trigger` - Update a project pipeline trigger
133. `delete_pipeline_trigger` - Delete a project pipeline trigger
134. `trigger_pipeline` - Trigger a pipeline with a pipeline trigger token
135. `list_pipeline_jobs` - List all jobs in a specific pipeline
136. `list_pipeline_trigger_jobs` - List trigger jobs (bridges) in a pipeline
137. `get_pipeline_job` - Get details of a GitLab pipeline job number
138. `get_pipeline_job_output` - Get the output/trace of a pipeline job with optional pagination
139. `validate_ci_lint` - Validate provided GitLab CI/CD YAML content for a project
140. `validate_project_ci_lint` - Validate an existing .gitlab-ci.yml configuration for a project
141. `list_ci_catalog_resources` - List GitLab CI/CD Catalog resources/components visible to the user
142. `get_ci_catalog_resource` - Get details for a GitLab CI/CD Catalog resource, including versions and components
143. `create_pipeline` - Create a new pipeline for a branch or tag
144. `retry_pipeline` - Retry a failed or canceled pipeline
145. `cancel_pipeline` - Cancel a running pipeline
146. `list_pipeline_schedules` - List pipeline schedules in a project, optionally filtered to active or inactive
147. `get_pipeline_schedule` - Get details of a specific pipeline schedule, including its variables and last pipeline
148. `list_pipeline_schedule_pipelines` - List the pipelines that a pipeline schedule has triggered
149. `create_pipeline_schedule` - Create a new pipeline schedule for a branch or tag
150. `update_pipeline_schedule` - Update an existing pipeline schedule
151. `delete_pipeline_schedule` - Delete a pipeline schedule
152. `play_pipeline_schedule` - Run a pipeline schedule immediately
153. `take_ownership_pipeline_schedule` - Take ownership of a pipeline schedule
154. `get_pipeline_schedule_variable` - Get a single variable of a pipeline schedule
155. `create_pipeline_schedule_variable` - Create a variable for a pipeline schedule
156. `update_pipeline_schedule_variable` - Update a variable of a pipeline schedule
157. `delete_pipeline_schedule_variable` - Delete a variable from a pipeline schedule
158. `play_pipeline_job` - Run a manual pipeline job
159. `play_pipeline_jobs` - Play multiple manual pipeline jobs sequentially
160. `retry_pipeline_job` - Retry a failed or canceled pipeline job
161. `cancel_pipeline_job` - Cancel a running pipeline job
162. `erase_pipeline_job` - Erase a pipeline job log and artifacts
163. `wait_for_pipeline` - Wait for a pipeline to reach a terminal status
164. `wait_for_job` - Wait for a job to reach a terminal status
165. `list_job_artifacts` - List artifact files in a job's archive
166. `download_job_artifacts` - Download job artifact archive (zip) and save to a local path
167. `get_job_artifact_file` - Get content of a single file from a job's artifacts
168. `list_merge_requests` - List merge requests (without project_id: user's MRs; with project_id: project MRs)
169. `list_group_merge_requests` - List merge requests across all projects of a group and its subgroups
170. `list_milestones` - List milestones with filtering options
171. `get_milestone` - Get details of a specific milestone
172. `create_milestone` - Create a new milestone
173. `edit_milestone` - Edit an existing milestone
174. `delete_milestone` - Delete a milestone
175. `get_milestone_issue` - Get issues associated with a specific milestone
176. `get_milestone_merge_requests` - Get merge requests associated with a specific milestone
177. `promote_milestone` - Promote a milestone to the next stage
178. `get_milestone_burndown_events` - Get burndown events for a specific milestone
179. `list_group_milestones` - List group milestones with filtering options
180. `get_group_milestone` - Get details of a specific group milestone
181. `create_group_milestone` - Create a new group milestone
182. `edit_group_milestone` - Edit an existing group milestone
183. `delete_group_milestone` - Delete a group milestone
184. `get_group_milestone_issue` - Get issues associated with a specific group milestone
185. `get_group_milestone_merge_requests` - Get merge requests associated with a specific group milestone
186. `get_group_milestone_burndown_events` - Get burndown events for a specific group milestone
187. `get_users` - Get GitLab user details by usernames
188. `get_user` - Get user details by ID
189. `whoami` - Get current authenticated user details
190. `list_commits` - List repository commits with filtering options
191. `get_commit` - Get details of a specific commit
192. `get_commit_diff` - Get changes/diffs of a specific commit
193. `get_file_blame` - Get git blame for a file at a given ref. Each entry maps a contiguous range of source lines to the commit that last changed them (id, author, authored_date, message). Use range_start/range_end to limit blame to specific lines.
194. `list_commit_statuses` - List statuses for a commit
195. `create_commit_status` - Create or update the status of a commit
196. `list_group_iterations` - List group iterations with filtering options
197. `upload_markdown` - Upload a file for use in markdown content
198. `download_attachment` - Download an uploaded file from a project (images returned as base64; other files, or images with local_path, are saved as new files under the download directory)
199. `health_check` - Verify server status and authentication. Always reports the MCP server version (mcp_server_version). When authenticated, also reports the GitLab instance version from GET /api/v4/version (version, revision, enterprise). Version lookup failures do not fail the health check — those fields are omitted.
200. `list_events` - List events for the authenticated user (before/after: YYYY-MM-DD)
201. `get_project_events` - List events for a project (before/after: YYYY-MM-DD)
202. `list_releases` - List all releases for a project
203. `get_release` - Get a release by tag name
204. `create_release` - Create a new release
205. `update_release` - Update an existing release
206. `delete_release` - Delete a release (does not delete the tag)
207. `create_release_evidence` - Create release evidence (Premium/Ultimate)
208. `download_release_asset` - Download a release asset file by direct asset path
209. `list_tags` - List repository tags for a project
210. `get_tag` - Get a repository tag by name
211. `create_tag` - Create a new repository tag
212. `delete_tag` - Delete a repository tag
213. `get_tag_signature` - Get the X.509 signature of a signed tag (404 if unsigned)
214. `list_protected_tags` - List protected tags in a project
215. `get_protected_tag` - Get details of a single protected tag or wildcard (create access levels)
216. `protect_tag` - Protect a repository tag or wildcard (set who can create it)
217. `unprotect_tag` - Remove protection from a previously protected tag or wildcard
218. `get_work_item` - Get a work item with full details including status, hierarchy, type, and widgets
219. `list_work_items` - List work items with filters (type, state, search, assignees, labels)
220. `create_work_item` - Create a work item (issue, task, incident, epic, etc.) with full field support
221. `update_work_item` - Update a work item (title, description, labels, assignees, state, parent, custom fields, etc.)
222. `convert_work_item_type` - Convert a work item to a different type
223. `list_work_item_statuses` - List available statuses for a work item type (Premium/Ultimate)
224. `list_custom_field_definitions` - List custom field definitions for a work item type
225. `move_work_item` - Move a work item to a different project
226. `list_work_item_notes` - List notes and discussions on a work item
227. `create_work_item_note` - Add a note to a work item (supports Markdown, internal notes, threads)
228. `list_work_item_emoji_reactions` - List all emoji reactions on a work item
229. `list_work_item_note_emoji_reactions` - List all emoji reactions on a work item note (comment, thread, or thread reply)
230. `create_work_item_emoji_reaction` - Add an emoji reaction to a work item (e.g. thumbsup, rocket, eyes)
231. `delete_work_item_emoji_reaction` - Remove an emoji reaction from a work item
232. `create_work_item_note_emoji_reaction` - Add an emoji reaction to a work item note (comment, thread, or thread reply)
233. `delete_work_item_note_emoji_reaction` - Remove an emoji reaction from a work item note (comment, thread, or thread reply)
234. `get_timeline_events` - List timeline events for an incident
235. `create_timeline_event` - Create a timeline event on an incident
236. `list_webhooks` - List webhooks for a project or group
237. `create_webhook` - Create a webhook on a project or group
238. `update_webhook` - Update an existing project or group webhook
239. `delete_webhook` - Delete a project or group webhook
240. `list_webhook_events` - List recent webhook events (past 7 days)
241. `get_webhook_event` - Get full details of a specific webhook event
242. `search_code` - Search for code across all projects (requires advanced search or Zoekt)
243. `search_project_code` - Search for code within a specific project (requires advanced search or Zoekt)
244. `search_group_code` - Search for code within a specific group (requires advanced search or Zoekt)
245. `list_project_variables` - List CI/CD variables for a project
246. `get_project_variable` - Get a single CI/CD variable from a project
247. `create_project_variable` - Create a CI/CD variable for a project
248. `update_project_variable` - Update an existing CI/CD variable in a project
249. `delete_project_variable` - Delete a CI/CD variable from a project
250. `list_group_variables` - List CI/CD variables for a group
251. `get_group_variable` - Get a single CI/CD variable from a group
252. `create_group_variable` - Create a CI/CD variable for a group
253. `update_group_variable` - Update an existing CI/CD variable in a group
254. `delete_group_variable` - Delete a CI/CD variable from a group
255. `get_dependency_proxy_settings` - Get dependency proxy settings for a group
256. `update_dependency_proxy_settings` - Update dependency proxy settings for a group (enable/disable, credentials for authenticated Docker Hub pulls)
257. `list_dependency_proxy_blobs` - List cached dependency proxy blobs for a group
258. `purge_dependency_proxy_cache` - Schedule purge of all cached dependency proxy blobs for a group
259. `list_project_vulnerabilities` - List vulnerabilities for a project with optional state, severity, and report type filters (GraphQL-backed, cursor pagination)
260. `get_vulnerability` - Get full details of a specific vulnerability
261. `dismiss_vulnerability` - Dismiss a vulnerability with a reason (acceptable_risk, false_positive, used_in_tests, mitigating_control, not_applicable) and optional comment
262. `confirm_vulnerability` - Confirm a vulnerability as a real finding requiring remediation
263. `orbit_query` - Execute a GitLab Orbit graph query over the indexed SDLC knowledge graph
264. `orbit_get_schema` - Fetch the current GitLab Orbit graph schema (node and edge types)
265. `orbit_get_status` - Check GitLab Orbit indexing status for the enabled scope
266. `orbit_list_tools` - List the MCP tool definitions exposed by GitLab Orbit
267. `list_snippets` - List snippets — project snippets when project_id is given, otherwise personal snippets
268. `get_snippet` - Get a snippet's metadata. Set include_content=true to also fetch the raw file content.
269. `create_snippet` - Create a snippet — project-scoped when project_id is given, otherwise a personal snippet. Requires title plus either file_name + content (single file) or files[] (multi-file); the two shapes cannot be mixed.
270. `update_snippet` - Update an existing snippet (provide at least one field to change). For multi-file edits — renames, deletions, additions — pass files[] with action (create/update/delete/move) and previous_path. The file_name + content shortcut still works for single-file content replacement.
271. `delete_snippet` - Delete a snippet
272. `list_project_runners` - List runners available to a project (type, status, paused, tag_list). Omits registration and authentication tokens.
273. `get_runner` - Get a runner's tag_list, run_untagged, locked, and access_level. When a project allowlist is active, the runner must be available to an allowed project. Omits registration and authentication tokens.
274. `rebase_merge_request` - Rebase the source branch of a merge request onto its target branch
275. `gitlab_api_request` - Send one GitLab REST call under /api/v4. Enabled only when GITLAB_TOOLSETS lists api. Readonly allows GET; modify rejects DELETE.
276. `discover_tools` - Discover and activate additional tool categories for this session. Available categories: core, merge_requests, issues, repositories, branches, projects, labels, ci, groups, pipelines, milestones, wiki, releases, tags, snippets, users, workitems, webhooks, search, variables, dependency_proxy, vulnerabilities, orbit. Already-active categories are listed in the response.

<!-- TOOLS-END -->

</details>

### Wiki page titles vs. slugs

GitLab derives a wiki page's **slug** (its URL, `/-/wikis/<slug>`) from the page title. Passing `title` to `update_wiki_page` / `update_group_wiki_page` therefore **renames the page and changes its URL** — for nested pages it can also move the page to a different path — which breaks existing links.

To change only the **displayed title** while keeping the URL stable, do **not** pass `title`. Instead, store the display title in the page content's YAML front matter and update the content:

```markdown
---
title: My Custom Display Title
---

Page body…
```

GitLab keeps the slug/URL untouched and shows the front-matter title in the UI. Read it back with `get_wiki_page` using `render_html: true`, which populates the `front_matter` field — the plain `title` field always reflects the slug-derived value.

## Testing 🧪

The project includes comprehensive test coverage including remote authorization:

```bash
# Run all tests (API validation + remote auth)
npm test

# Run only remote authorization tests
npm run test:remote-auth

# Run all tests including readonly MCP tests
npm run test:all

# Run only API validation
npm run test:integration
```

All remote authorization tests use a mock GitLab server and do not require actual GitLab credentials.