Verify remote first: No GitLab remote = don't use glab
Check CI before requesting review: Run glab ci status after pushing. Fix failures before requesting reviews.
Pull logs immediately on failure: Run glab ci trace <job-name> first. The logs contain the answer.
Use draft MRs for WIP: Create with --draft, mark ready with glab mr update <id> --ready
Reference issues explicitly: Use Closes #123 for auto-close, Relates to #123 for tracking only
Retry flaky failures, fix real ones: Retry a job with glab ci retry <job-name>. If it fails again, it's a real issue.

Quick Start: Branch → MR

The most common workflow—create a branch, make changes, open an MR:

git checkout -b feature/my-feature
# make changes
git add . && git commit -m "feat: add new feature"
git push -u origin feature/my-feature
glab mr create --fill --target-branch main

Quick Reference: CI Commands

Task	Command
Check pipeline status	`glab ci status`
View pipeline details	`glab ci view`
Pull job logs	`glab ci trace <job-name>`
Retry failed job	`glab ci retry <job-name>`
Run new pipeline	`glab ci run`
Download artifacts	`glab job artifact <ref> <job-name>`

Prerequisites

This skill requires the glab CLI. If glab commands fail with "command not found", ask the user to install it:

# macOS
brew install glab

# Linux (Debian/Ubuntu)
sudo apt install glab

# Other methods: https://gitlab.com/gitlab-org/cli#installation

Authentication must be configured. Run glab auth status to check. If not authenticated:

glab auth login

Detailed Reference

Repository Setup

Clone a Repository

# Clone via glab (uses authenticated user context)
glab repo clone <owner>/<repo>

# Clone with specific branch
glab repo clone <owner>/<repo> -- --branch <branch>

# Clone to specific directory
glab repo clone <owner>/<repo> <directory>

Fork a Repository

# Fork to your namespace
glab repo fork <owner>/<repo>

# Fork and clone immediately
glab repo fork <owner>/<repo> --clone

View Repository Info

glab repo view
glab repo view <owner>/<repo>

Branch and Changes

Create a Branch

git checkout -b feature/my-feature
# Make changes, stage, and commit
git add .
git commit -m "feat: add new feature"

Push Branch

git push -u origin feature/my-feature

Merge Request Operations

Create a Merge Request

# Interactive creation
glab mr create

# With specific options
glab mr create \
  --title "feat: add new feature" \
  --description "$(cat <<'EOF'
## Summary
Brief description of changes

## Changes
- Change 1
- Change 2

## Testing
How to test these changes
EOF
)" \
  --target-branch main \
  --assignee @me \
  --label "enhancement"

# Create as draft
glab mr create --draft --title "WIP: feature in progress"

# Create and auto-fill from commits
glab mr create --fill

List Merge Requests

# List open MRs (default)
glab mr list

# List by state
glab mr list --merged      # merged MRs only
glab mr list --closed      # closed MRs only
glab mr list --all         # all MRs (open, merged, closed)

# Filter by author or assignee
glab mr list --author @me
glab mr list --assignee @me

# Filter by label
glab mr list --label bug,urgent

# Limit results
glab mr list --per-page 10

View Merge Request Details

# View current branch's MR
glab mr view

# View specific MR
glab mr view 123

# View in browser
glab mr view 123 --web

Update a Merge Request

# Update title
glab mr update 123 --title "new title"

# Add labels
glab mr update 123 --label "reviewed,approved"

# Change assignees
glab mr update 123 --assignee user1,user2

# Mark ready for review (remove draft)
glab mr update 123 --ready

# Add reviewers
glab mr update 123 --reviewer user1,user2

Merge a Merge Request

# Merge when pipeline succeeds
glab mr merge 123

# Merge immediately (skip pipeline check)
glab mr merge 123 --when-pipeline-succeeds=false

# Squash and merge
glab mr merge 123 --squash

# Delete source branch after merge
glab mr merge 123 --remove-source-branch

Review and Iteration

Fetch Review Comments

# View MR with comments and activities
glab mr view 123 --comments

# View MR diff
glab mr diff 123

Address Review Comments

Read the comments:
```
glab mr view 123 --comments
```
Make requested changes locally

Commit and push:

git add .
git commit -m "fix: address review feedback"
git push

Reply to comments (via web or API):

# Add a note to the MR
glab mr note 123 -m "Addressed feedback in latest commit"

Approve a Merge Request

glab mr approve 123

Check Out an MR Locally

# Check out MR branch locally for testing
glab mr checkout 123

CI/CD Monitoring and Failure Remediation

CI job failures are the most common blocker for merging MRs.

Check Pipeline Status

# Quick status check for current branch
glab ci status

# View detailed pipeline status (shows all jobs and stages)
glab ci view

# List recent pipelines with status
glab ci list

# Check status for a specific MR
glab mr view 123  # Shows pipeline status in MR details

Pipeline states: pending, running, success, failed, canceled, skipped

Identify Failed Jobs

When a pipeline fails, first identify which jobs failed:

# View the current pipeline with job breakdown
glab ci view

# View pipeline for a specific branch
glab ci view main

The output shows each job's status. Focus on jobs with failed status.

Pull and Analyze Job Logs

# Stream logs from a running or completed job
glab ci trace <job-name>

# View logs for a specific job by ID
glab ci trace <job-id>

# Example: view logs for the "test" job
glab ci trace test

# For jobs in specific pipelines
glab ci trace <job-name> --pipeline-id <pipeline-id>

Log analysis tips:

Scroll to the end first—the final error is usually the root cause
Look for error:, Error:, FAILED, fatal:, or exit codes
Check for timeout messages if the job hung
Note the stage and job name for context

Common CI Failure Patterns

Pattern	Log Signature	Typical Fix
Test failure	`FAIL`, `AssertionError`, `expected ... got`	Fix the failing test or the code it tests
Lint error	`error:`, style/format violations	Run linter locally, fix issues
Build failure	`compilation failed`, `cannot find module`	Check dependencies, imports, syntax
Timeout	`Job timed out`, `exceeded limit`	Optimize slow operations or increase timeout
Missing env/secret	`undefined`, `missing required`, `authentication failed`	Check CI variables configuration
Dependency issue	`404 Not Found`, `version not found`	Update dependency versions, check registry access

Address Failures Locally

Reproduce the failure locally (when possible):

# Run the same commands from .gitlab-ci.yml
npm test        # for test failures
npm run lint    # for lint failures
npm run build   # for build failures

Fix the issue and commit:

git add .
git commit -m "fix: resolve CI test failure in auth module"
git push

Monitor the new pipeline:

# Watch the pipeline status
glab ci status --live

# Or view in browser
glab ci view --web

Retry and Rerun Jobs/Pipelines

# Retry a specific job (interactive selection if no job specified)
glab ci retry
glab ci retry <job-name>
glab ci retry <job-id>

# Retry a job in a specific pipeline
glab ci retry <job-name> --pipeline-id <pipeline-id>

# Trigger a completely new pipeline
glab ci run

# Trigger with CI variables (useful for conditional jobs)
glab ci run --variables "FORCE_FULL_TEST:true"

When to retry vs. fix:

Retry: Flaky tests, transient network errors, runner issues
Fix: Genuine code errors, missing dependencies, configuration problems

CI Failure Remediation Workflow

Follow this process when an MR pipeline fails:

Check status: glab ci status or glab mr view
Identify failed jobs: glab ci view
Pull logs: glab ci trace <job-name>
Analyze the error: Find root cause in logs
Fix locally: Reproduce and fix the issue
Push fix: git commit and git push
Verify: glab ci status --live to watch new pipeline
If still failing: Repeat from step 2

Advanced: Debug with CI Variables

# List CI/CD variables (requires maintainer access)
glab variable list

# Set a variable for debugging
glab variable set DEBUG_CI "true"

# Run pipeline with debug variable
glab ci run --variables "CI_DEBUG_TRACE:true"

Artifacts and Reports

# Download job artifacts (requires ref and job name)
glab job artifact main build
glab job artifact <branch> <job-name>

# Download to specific path
glab job artifact main build --path="./artifacts/"

Use artifacts to inspect test reports, coverage data, or build outputs that might explain failures.

Searching GitLab

Search Issues

# Search in current project
glab issue list --search "bug in login"

# Search by label
glab issue list --label "bug"

# Search across all accessible projects (use API)
glab api "search?scope=issues&search=login+error" | jq '.[] | {id, title, web_url}'

Search Merge Requests

# Search in current project
glab mr list --search "refactor auth"

# Search across GitLab (use API)
glab api "search?scope=merge_requests&search=auth+refactor" | jq '.[] | {id, title, web_url}'

Search Code/Projects

# Search for projects
glab api "search?scope=projects&search=my-library" | jq '.[] | {id, name, web_url}'

# Search code (blobs)
glab api "search?scope=blobs&search=deprecated+function" | jq '.[] | {path, project_id, ref}'

Multi-Repository Operations

For coordinated changes across multiple repositories (e.g., dependency updates, security fixes):

Strategy

List affected repositories: Identify all repos that need changes
Clone each repository: Use glab repo clone
Create branches with consistent naming: Use a common prefix (e.g., fix/security-CVE-2024-XXXX)
Make changes in each repo: Apply the fix/update
Create MRs with linked descriptions: Reference the tracking issue

Example: Coordinated Security Fix

# Define repos and fix details
REPOS="group/repo1 group/repo2 group/repo3"
BRANCH="fix/CVE-2024-12345"
ISSUE_URL="https://gitlab.com/group/tracker/-/issues/100"

for repo in $REPOS; do
  echo "Processing $repo..."
  
  # Clone if not exists
  if [ ! -d "$(basename $repo)" ]; then
    glab repo clone "$repo"
  fi
  
  cd "$(basename $repo)"
  
  # Create branch and make changes
  git checkout -b "$BRANCH"
  
  # Apply fix (example: update dependency version)
  # sed -i 's/vulnerable-pkg@1.0/vulnerable-pkg@1.1/g' package.json
  
  git add .
  git commit -m "fix: update vulnerable-pkg to patched version

Addresses $ISSUE_URL"
  
  git push -u origin "$BRANCH"
  
  # Create MR
  glab mr create \
    --title "fix: address CVE-2024-12345" \
    --description "Updates vulnerable-pkg to patched version.

Related to: $ISSUE_URL" \
    --label "security"
  
  cd ..
done

Working with Issues

Create an Issue

glab issue create \
  --title "Bug: login fails on mobile" \
  --description "Steps to reproduce..." \
  --label "bug,mobile"

List and View Issues

glab issue list
glab issue view 42

Close an Issue

glab issue close 42

Link MR to Issue

When creating an MR, reference the issue in the description:

glab mr create --description "Closes #42"

Releases

Create a Release

glab release create v1.0.0 \
  --name "Version 1.0.0" \
  --notes "$(cat CHANGELOG.md)"

# With assets
glab release create v1.0.0 --assets-links '[{"name":"binary","url":"https://..."}]'

List Releases

glab release list

API Access

For operations not covered by glab subcommands, use the API directly:

# GET request
glab api projects/:id/merge_requests

# POST request
glab api projects/:id/issues --method POST --field title="New issue"

# With pagination
glab api projects/:id/issues --paginate

Additional Notes

Check authentication on errors: If glab commands fail with 401/403, run glab auth status and re-authenticate with glab auth login.
Consistent branch naming: Use feature/, fix/, docs/, chore/ prefixes. For security fixes, include the CVE: fix/CVE-2024-12345.
Self-managed instances: Set GITLAB_HOST environment variable or authenticate with glab auth login --hostname gitlab.example.com.

gitlab

GitLab Workflow

FIRST: Verify GitLab Remote

Key Guidelines