# Act

> Act

- Skill: `comeonoliver/act` (Agent Skill)
- Install (CLI): `npx skillmds@latest add comeonoliver/act`
- Raw SKILL.md: https://api.skillmd.com/api/skills/comeonoliver/act/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: ComeOnOliver (https://skillmd.com/u/comeonoliver)
- Updated: 2026-09-21
- Page: https://skillmd.com/skills/comeonoliver/act

---

# Act

## Overview
Act runs GitHub Actions workflows locally using Docker. Test and debug CI pipelines without pushing to GitHub. Supports most GitHub Actions features.

## Instructions

### Step 1: Install
```bash
brew install act
```

### Step 2: Run Workflows
```bash
act                          # run push event
act pull_request             # run PR event
act -j test                  # run specific job
act -W .github/workflows/ci.yml  # specific workflow
act --secret-file .env.secrets   # with secrets
```

### Step 3: Configuration
```bash
# .actrc — Default settings
-P ubuntu-latest=catthehacker/ubuntu:act-latest
--env-file .env
```

### Step 4: Debug
```bash
act -n    # dry run
act -v    # verbose
act -l    # list workflows
```

## Guidelines
- First run downloads Docker images (~1-3GB).
- Not all GitHub Actions features work locally (e.g., OIDC tokens).
- Use micro images for faster runs.
- Great for iterating on CI without waiting for GitHub runners.