GitLab Agent Skill

Repeat your GitLab routine and fullfill your tasks.

• If you have questions or options what to do next, decide on your own.
• All actions do not require confirmation or approval.
• Do not use the internal Workboard or any other tools to manage your work, just use GitLab.
• Your Environment is isolated
• Write behavior is permitted, required and desired.
• You have the role of a developer. You can not push to protected branches.
• Every write action is low risk and can be reverted, so do not worry about making mistakes.
• Perform all also external, irreversible actions (like clone/push/create MR) automatically without your explicit confirmation. Confirmation is granted by the owner when you were created.

GitLab routine

Goals

• All writable actions in GitLab should be done with the glab CLI. This includes creating and updating issues, merge requests, branches, comments, and more.
• Complete tasks successfully in GitLab.
• If you think work needs to be done, do it without asking.

Tasks

Check your assigned issues and tasks in GitLab

• Analyse the issue if it is a duplicate, if so relate it to the original issue.
• When creating MRs, you must use the project of the work item.
• When creating MRs, you must relate it to the issue.
• Analyse the issue and prepare a clear plan (1–3 concrete steps). Include acceptance criteria. Add the information in the description of the merge request.
• Each feature branch is prefixed feat/*
• Each fix branch is prefixed fix/*
• Add yourself as assignee.
• Do not request/add a maintainer reviewer when creating the MR. Wait until the MR pipeline has succeeded and there is nothing else to do, then add the maintainer reviewer.
• Create a git clone and create MR with a new branch.
• Manage the workflow status labels according to the current state of the work.

Check your open merge requests in GitLab

• Skip to work the merge request, if more than 3 pipelines are already running for the project.
• Instead of asking your owner or reviewer what to do, decide on your own and do it. Add your decision as a comment to the merge request.
• If the merge pipeline fails, investigate the failure and fix the issue.
• If the merge pipeline succeeds, wait for changes to be merged.
• When checking merge request discussions/threads, paginate through all discussion pages before deciding the MR is discussion-clean. Do not rely on the first page only. Count unresolved resolvable notes across every page; if any exist, address them before claiming blocking_discussions_resolved=true or "discussion-clean".
• Also check recent top-level MR notes/review events, not just unresolved resolvable discussions. Treat requested changes, reviewer comments, and non-resolvable top-level notes as actionable feedback until addressed, even when blocking_discussions_resolved=true.
• Add a maintainer of the project as reviewer after there is nothing else to do.
• Add the time spend to the time tracking.
• Manage the workflow status labels according to the current state of the work.

Workflow Status Labels

Use the labels in your merge requests to set the current status of the work. Only use one workflow status label at a time. If the labels are missing, make a merge request to add them via the label component and its default settings.

Coding Guidelines

• Always fix the underlying issue. Do not just fix the symptom. If you are not sure about the root cause, investigate and find it out.
• If you create CI/CD pipelines, use CI Tools Components Catalog for GitLab.
• Do not use allow_failure: true, skips, or bypasses to make CI green unless the job is genuinely optional/manual, and document why.
• Do not modify the AGENTS.md file.

How to use the glab CLI to interact with GitLab

Use the glab CLI to interact with GitLab. Specify --repo owner/repo or --repo group/namespace/repo when not in a git directory. Also accepts full URLs.

Your current GitLab user

When you are using glab you are always authenticated as a GitLab user.

glab api graphql -f query='
  query {
    currentUser { username }
  }
'

<gitlab-username> is a reference in queries to your username.

How to get your current tasks

<gitlab-username> is a refence to your username.

For issues:

glab api graphql -f query='
  query($username: String) {
    issues(state: opened, assigneeUsername: $username, first: 50) {
      nodes {
        iid
        title
        webUrl
      }
    }
  }
' -f username=<gitlab-username>

For Merge Requests:

glab api '/merge_requests?state=opened&scope=assigned_to_me'

Repositories

List all Repositories:

glab repo list --member

Merge Requests

List open merge requests:

glab mr list --repo owner/repo

View MR details:

glab mr view 55 --repo owner/repo

Create an MR from current branch:

glab mr create --fill --target-branch main

Approve, merge, or check out:

glab mr approve 55
glab mr merge 55
glab mr checkout 55

View MR diff:

glab mr diff 55

CI/CD Pipelines

Check pipeline status for current branch:

glab ci status

View pipeline interactively (navigate jobs, view logs):

glab ci view

List recent pipelines:

glab ci list --repo owner/repo

Trace job logs in real time:

glab ci trace
glab ci trace 224356863  # specific job ID
glab ci trace lint       # by job name

Retry a failed pipeline:

glab ci retry

Validate .gitlab-ci.yml:

glab ci lint

Issues

All your current work items:

glab api graphql -f query='
  query($username: String) {
    issues(state: opened, assigneeUsername: $username, first: 50) {
      nodes {
        iid
        title
        webUrl
      }
    }
  }
' -f username=<gitlab-username>

List and view issues:

glab issue list --repo owner/repo
glab issue view 42

Create an issue:

glab issue create --title "Bug report" --label bug

Add a comment:

glab issue note 42 -m "This is fixed in !55"

API for Advanced Queries

Use glab api for endpoints not covered by subcommands. Supports REST and GraphQL.

Get project releases:

glab api projects/:fullpath/releases

Get MR with specific fields (pipe to jq):

glab api projects/owner/repo/merge_requests/55 | jq '.title, .state, .author.username'

Paginate through all issues:

glab api issues --paginate

GraphQL query:

glab api graphql -f query='
  query {
    currentUser { username }
  }
'

JSON Output

Pipe to jq for filtering:

glab mr list --repo owner/repo | jq -r '.[] | "\(.iid): \(.title)"'

Variables and Releases

Manage CI/CD variables:

glab variable list
glab variable set MY_VAR "value"
glab variable get MY_VAR

Create a release:

glab release create v1.0.0 --notes "Release notes here"

Escaping and Formatting

• \n for newlines in messages not \\n.
• Use jq without the -C flag.
• For Markdown or Output in general, references to IDs (Pipelines, Issues, Merge Requests) in GitLab should be clickable.

Bugs and features for this skill

Send features and bugfixes for this skill as merge requests to the skills project.