glab

GitLab CLI (glab) Skill

Provides guidance for using glab, the official GitLab CLI, to perform GitLab operations from the terminal.

When to Use This Skill

Invoke when the user needs to:

• Create, review, or manage merge requests
• Work with GitLab issues
• Monitor or trigger CI/CD pipelines
• Clone or manage repositories
• Perform any GitLab operation from the command line

Prerequisites

Verify glab installation before executing commands:

glab --version

If not installed, inform the user and provide platform-specific installation guidance.

Authentication Quick Start

Most glab operations require authentication:

# Interactive authentication
glab auth login

# Check authentication status
glab auth status

# For self-hosted GitLab
glab auth login --hostname gitlab.example.org

# Using environment variables
export GITLAB_TOKEN=your-token
export GITLAB_HOST=gitlab.example.org  # for self-hosted

Core Workflows

Creating a Merge Request

# 1. Ensure branch is pushed
git push -u origin feature-branch

# 2. Create MR
glab mr create --title "Add feature" --description "Implements X"

# With reviewers and labels
glab mr create --title "Fix bug" --reviewer=alice,bob --label="bug,urgent"

Reviewing Merge Requests

# 1. List MRs awaiting your review
glab mr list --reviewer=@me

# 2. Checkout MR locally to test
glab mr checkout <mr-number>

# 3. After testing, approve
glab mr approve <mr-number>

# 4. Add a general comment
glab mr note <mr-number> -m "Please update tests"

Posting Inline DiffNote Comments

To anchor a comment to a specific line in the diff (a DiffNote), you must use a JSON body with the Content-Type: application/json header. Using -F form fields will create an unanchored DiscussionNote.

# Get SHA values from the MR
glab mr view <id> --output=json | grep -oP '"(base_sha|head_sha|start_sha)":\s*"\K[0-9a-f]{40}'

# Post a DiffNote on a new line
glab api --method POST "projects/:id/merge_requests/:iid/discussions" \
  -H "Content-Type: application/json" \
  --input - <<'JSONEOF'
{
  "body": "Your review comment here",
  "position": {
    "base_sha": "<base_sha>",
    "start_sha": "<start_sha>",
    "head_sha": "<head_sha>",
    "position_type": "text",
    "new_path": "path/to/file.js",
    "new_line": 42
  }
}
JSONEOF