How to integrate Gitlab MCP with Grok Build

Connect Grok Build to Gitlab MCP. Create new gitlab group for qa team, open bug issue in frontend project, and more from your terminal, with authentication handled for you.

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Gitlab is a web-based DevOps platform for managing source code, issues, and CI/CD pipelines. It streamlines software development with integrated collaboration and automation tools.

123 Tools

How to integrate Gitlab MCP with Grok Build

Grok Build is xAI's terminal coding agent. It runs on Grok 4.5, plans its work before it acts, and can run multiple sub-agents in parallel. It also reads Claude Code's MCP configuration, so any server you already have in a .mcp.json is picked up with no changes.

In this guide, I will show you how to connect your Gitlab account to Grok Build through Composio, so it can create new GitLab group for QA team, open bug issue in frontend project, create branch from latest main commit, and more without leaving the terminal. Composio holds the OAuth tokens for you, and Grok Build only calls the tools you approve.

Also integrate Gitlab with

Why use Composio over a standalone MCP server?

  • Read and write access. Composio's Gitlab integration lets Grok Build take real actions like creating drafts, sending updates, and labeling records, not just reading data.
  • 1,500+ SaaS toolkits out of the box. One endpoint gives you a full catalog of pre-built connectors, from Gmail and Slack to Notion, Linear, and Salesforce.
  • One MCP server for every app. Wire up a single Composio server instead of maintaining a separate MCP entry for each app.
  • Smart, context-aware tool loading. Grok Build caps how many tools it holds in a single request. Composio loads only the tools a task needs, so you do not spend that budget on tools you are not using.
  • Cross-app automation. Chain actions across apps in one run. Pull a thread, summarize it in Notion, and post the highlights to Slack from a single prompt.

Prerequisites

  • Grok Build installed and signed in. Install with curl -fsSL https://x.ai/cli/install.sh | bash on macOS or Linux, or irm https://x.ai/cli/install.ps1 | iex on Windows PowerShell. On first launch Grok opens a browser to authenticate; for headless or CI use, set an XAI_API_KEY environment variable instead (create the key at console.x.ai).
  • Access to the Gitlab account you want to connect.
  • The Composio MCP endpoint. Composio's server is remote and hosted, so there is nothing to run locally and no tunnel to set up.

Step-by-step: Connect Gitlab to Grok Build

1. Install and verify Grok Build

Install the CLI, then restart your shell so the grok binary lands on your PATH:

bash
curl -fsSL https://x.ai/cli/install.sh | bash
which grok

On Windows, install with PowerShell instead: irm https://x.ai/cli/install.ps1 | iex. If which grok returns a path, you are set. Grok Build runs on Grok 4.5 by default; you can switch models inside the session with /model <name>.

2. Add the Composio server

Add Composio as a remote HTTP MCP server with the grok mcp add command:

bash
grok mcp add --transport http composio https://connect.composio.dev/mcp

You can also add and manage servers from inside a session. Run /mcps to open the extensions modal on the MCP tab, then add a new server and paste the Composio URL. Added this way, Grok auto-detects the name from the URL and lists the server as connect:

bash
https://connect.composio.dev/mcp
Grok Build /mcps extensions modal listing MCP servers Grok Build adding the Composio MCP server with its URL

Grok also reads Claude Code-style config, so an entry in ~/.grok/config.toml or a project .mcp.json works the same way.

3. Authenticate

Composio uses OAuth. In the /mcps modal, select the Composio server and press i to authenticate (Grok also triggers this browser flow automatically the first time it uses a Composio tool). Click Allow to authorize access. Grok stores the tokens under ~/.grok/mcp_credentials.json, and /mcps shows Composio as connected.

Grok Build prompting to authenticate the Composio MCP server Composio authorization screen with the Allow button for Grok Build

4. Start building

Ask Grok to work with your Gitlab account through Composio. On the first Gitlab action, Composio prompts you to connect the account through OAuth. Approve the scopes once, and Composio handles token refresh from there.

What you can do after connecting Gitlab

  • Create new GitLab group for QA team
  • Open bug issue in frontend project
  • Create branch from latest main commit
  • Archive completed API migration project

Security + privacy notes (important)

  • Use least-privilege access. Grant only the Gitlab scopes you actually need.
  • Review OAuth scopes before approving. Check that the requested scopes match what you expect Composio and Grok Build to do.
  • Keep write actions human-reviewed. Grok Build proposes a plan before it acts. Leave that approval step on for actions like sending messages or editing records.
  • Keep secrets out of version control. Your XAI_API_KEY and any tokens should never be committed. Use environment variables or a secrets manager.
TOOLS

Supported Tools

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

Add Spent Time

Adds spent time to a GitLab issue for time tracking purposes.

Approve Merge Request

Approves a merge request in a GitLab project.

Archive Project

Tool to archive a project.

Cancel Job

Cancel a GitLab CI/CD job within a specified project.

Cancel Pipeline

Tool to cancel a running pipeline in a GitLab project.

Create Commit

Creates a new commit with multiple file operations in a GitLab project.

Create Commit Comment

Posts a comment to a specific commit in a GitLab project repository.

Create Repository File

Creates a new file in a GitLab repository at the specified path with the given content.

Create GitLab Group

Tool to create a new group in GitLab.

Create Issue Note

Creates a new note (comment) on a project issue in GitLab.

Create Label

Creates a new label for a GitLab project with specified name, color, and optional attributes.

Create Merge Request

Creates a new merge request in a GitLab project to propose changes from a source branch into a target branch.

Create Merge Request Draft Note

Creates and saves an unpublished merge request draft note that is visible only to its author.

Create Milestone

Creates a new milestone in a GitLab project.

Create Pipeline

Tool to create a new pipeline for a specific branch or tag in a GitLab project.

Create Project

Tool to create a new project in GitLab.

Create Project Issue

Tool to create a new issue in a GitLab project.

Create Repository Branch

Tool to create a new branch in a project.

Create Project Webhook

Creates a new webhook (project hook) for a GitLab project to receive real-time event notifications.

Delete Group

Deletes a GitLab group by its ID or URL-encoded path.

Delete Issue Note

Deletes a note (comment) from an issue in a GitLab project.

Delete Label

Deletes a label from a GitLab project by its ID or title.

Delete Merge Request

Tool to permanently delete a merge request from a GitLab project.

Delete Milestone

Deletes a project milestone by its ID.

Delete Pipeline

Tool to delete a CI/CD pipeline by its ID within a specified project.

Delete Project

Tool to delete a GitLab project by its ID.

Delete Repository Branch

Tool to delete a branch from a GitLab project repository.

Delete Repository File

Deletes a file from a GitLab repository by creating a new commit.

Delete Webhook

Deletes a project webhook/hook permanently from a GitLab project, removing the integration and stopping all event notifications.

Download Project Avatar

Tool to download a project's avatar image.

Erase Job

Tool to erase the content of a specified job within a project.

Fork Project

Forks a GitLab project to a specified namespace or the current user's namespace.

Get Commit References

Tool to get all references (branches or tags) a commit is pushed to.

Get Commit Sequence

Tool to get the sequence number of a commit in a project by following parent links from the given commit.

Get Current User

Retrieves information about the currently authenticated user.

Get Repository File

Retrieves a single file from a GitLab repository at a specific ref (branch, tag, or commit).

Get Group Details

Tool to retrieve information about a specific group by its ID.

Get Group Member

Tool to retrieve details for a specific group member.

Get Groups

Get Groups

Get Issue

Retrieves a single issue from a GitLab project by its internal ID (iid).

Get Issue Note

Retrieves a single comment (note) from a GitLab issue by its ID.

Get Job Details

Tool to retrieve details of a single job by its ID within a specified project.

Get Job Trace

Retrieves the trace (log output) for a specific CI/CD job within a project.

Get Project Label

Retrieves a single project label by its ID or title.

Get Merge Request Approvals

Retrieves aggregate approval status for a GitLab merge request on any GitLab tier.

Get Merge Request Approval State

Retrieves rule-level approval satisfaction for a GitLab merge request.

Get Merge Request Notes

Tool to fetch comments on a merge request.

Get Milestone

Retrieves a single milestone by its ID for a specific project.

Get Project

Tool to get a single project by ID or URL-encoded path.

Get Project Languages

Tool to list programming languages used in a project with percentages.

Get Project Member

Tool to retrieve details for a specific project member.

Get Project Member All

Tool to retrieve details for a specific project member (including inherited and invited members).

Get Project Merge Request

Tool to fetch full details for a single merge request when the MR IID is known.

Get Merge Request Commits

Tool to get commits of a merge request.

Get Project Merge Requests

Tool to retrieve a list of merge requests for a specific project.

Get Projects

Tool to list all projects accessible to the authenticated user.

List Merge Request Diff Versions

Tool to list all diff versions of a merge request.

Get Raw File

Retrieves the raw contents of a file from a GitLab repository without Base64 encoding.

Get Repository Branch

Tool to retrieve information about a specific branch in a project.

Get Repository Branches

Retrieves a list of repository branches for a project.

Get Single Commit

Tool to get a specific commit identified by the commit hash or name of a branch or tag.

Get Single Pipeline

Tool to retrieve details of a single pipeline by its ID within a specified project.

Get Issue Time Stats

Retrieves time tracking statistics for a specific issue in a project.

Get User

Tool to retrieve information about a specific user by their ID.

Get User Preferences

Tool to get the current user's preferences.

Get Users

Tool to retrieve a list of users from GitLab.

Get Any User's Status by ID

Tool to get a user's status by ID.

Get User Status

Tool to get the current user's status.

Get User Support PIN

Tool to get details of the current user's Support PIN.

Get Webhook

Retrieves detailed information about a specific project webhook by its ID.

Import project members

Tool to import members from one project to another.

List All Group Members

Tool to list all members of a group including direct, inherited, and invited members.

List All Project Members

Tool to list all members of a project (direct, inherited, invited).

List Billable Group Members

Tool to list billable members of a top-level group (including its subgroups and projects).

List Commit Comments

Retrieves all comments associated with a specific commit in a GitLab project.

List Group Members

Tool to list direct members of a group.

List Group Projects

Tool to list projects within a GitLab group by group ID or full path.

List Issue Notes

Retrieves all notes (comments and activity) for a specific project issue in GitLab.

List Labels

Lists all labels for a project with optional filtering by name, archived status, and ancestor inclusion.

List Merge Request Diffs

List the files changed by a GitLab merge request, including patch content.

List Merge Request Discussions

Lists grouped discussion threads and their notes for a merge request.

List Merge Requests

Retrieves a list of merge requests from across all accessible projects based on scope and filters.

List Project Milestones

Lists all milestones for a specific project with optional filtering by state, title, or search terms.

List Pending Group Members

Tool to list pending members of a group and its subgroups and projects.

List Pipeline Jobs

Tool to retrieve a list of jobs for a specified pipeline within a project.

List Project Groups

Tool to list ancestor groups of a project.

List Project Invited Groups

Tool to list groups invited to a project.

List Project Issues

Tool to list issues for a project with filtering options (state, labels, search, assignee, author, etc.

List Project Pipelines

Tool to retrieve a list of pipelines for a specified project.

List Project Shareable Groups

Tool to list groups that can be shared with a project.

List Project Repository Tags

Tool to retrieve a list of repository tags for a specified project.

List Project Transfer Locations

Tool to list namespaces available for project transfer.

List project users

Tool to list users of a project.

List Repository Commits

Tool to get a list of repository commits in a project.

List Repository Tree

List files and directories in a GitLab project's repository tree.

List User Projects

Tool to list projects owned by a specific user.

List Webhooks

Tool to list all webhooks configured for a GitLab project.

Merge Merge Request

Merge a GitLab merge request immediately or enable auto-merge when checks pass.

Move Issue

Moves an issue from one project to another in GitLab.

Play Job

Triggers execution of a manual job in a GitLab project.

Create Support PIN

Tool to create a support PIN for your authenticated user.

Protect Branch

Protects a repository branch in a GitLab project by setting access controls for push, merge, and unprotect operations.

Update User Preferences

Tool to update the current user's preferences.

Reset Spent Time

Resets the total spent time for a specified GitLab issue to 0 seconds.

Reset Time Estimate

Resets the estimated time for a specified issue to 0 seconds.

Retry Pipeline

Retries failed or canceled jobs in a pipeline.

Set Time Estimate

Sets the estimated time to complete an issue in a GitLab project.

Set User Status

Tool to set the current user's status.

Share Project With Group

Tool to share a project with a group.

Star Project

Stars a project in GitLab, marking it as a favorite for the authenticated user.

Start Housekeeping Task

Tool to start the housekeeping task for a project.

Unapprove Merge Request

Removes the approval from the currently authenticated user for a specified merge request.

Unprotect Branch

Tool to remove protection from a branch in a GitLab project.

Unstar Project

Unstar a previously starred GitLab project to remove it from your favorites list.

Update GitLab Group

Updates an existing GitLab group's settings and properties.

Update Issue Note

Updates an existing note (comment) on a GitLab issue.

Update Label

Updates an existing label in a GitLab project by modifying its name, color, description, priority, or archived status.

Update Merge Request

Updates an existing merge request in a GitLab project (title, description, assignees, reviewers, labels, state, etc.

Update Milestone

Updates an existing milestone in a GitLab project, allowing you to modify the title, description, dates, or state.

Update Project Issue

Tool to update an existing issue in a GitLab project (title, description, labels, assignees, state, etc.

Update Repository File

Updates an existing file in a GitLab repository.

Update Webhook

Updates an existing project webhook configuration including URL, event triggers, SSL verification, and authentication token.

Validate Credential

Validates the authentication credentials by retrieving the currently authenticated user's information.

FAQ

Frequently asked questions

A standalone Gitlab MCP server gives Grok Build a fixed set of Gitlab tools tied to that one server. The Composio Tool Router lets Grok Build load tools from Gitlab and many other apps on demand, based on the task, all through a single endpoint.

Yes. Grok Build ships with native MCP support. Add a server with the grok mcp add command, from the in-session /mcps modal, or by editing ~/.grok/config.toml. It also reads Claude Code-style .mcp.json files, so Grok Build discovers the tools automatically.

Yes. Grok Build has zero-migration compatibility with Claude Code's configuration, so the same Composio server entry works in both without edits.

Tokens, keys, and configuration are encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant, so your Gitlab data and credentials are handled to that standard.

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