Act Workflow Syntax includes 22 code blocks for direct copy-paste. The SKILL.md runs to about 967 words, in the catalog's typical mid-range.
Act Workflow Syntax sits in the General category under the automation sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.
These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.
Use this skill when creating or modifying GitHub Actions workflow files (.github/workflows/*.yml). This covers workflow structure, triggers, jobs, steps, and best practices for workflows that work both on GitHub and locally with act.
Act Workflow Syntax is a community-contributed Claude Code skill in the automation sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/act-workflow-syntax/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when creating or modifying GitHub Actions workflow files. Provides guidance on workflow syntax, triggers, jobs, steps, and expressions for creating valid GitHub Actions workflows that can be tested locally with act.
The Act Workflow Syntax Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 115,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
mkdir -p ~/.claude/skills/act-workflow-syntax curl -L https://claudskills.com/skills/act-workflow-syntax/SKILL.md \ -o ~/.claude/skills/act-workflow-syntax/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/act-workflow-syntax/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/act-workflow-syntax/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\act-workflow-syntax\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
SKILL.md from the source repository to ~/.claude/skills/act-workflow-syntax/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Act Workflow Syntax is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.If you reference this skill in a blog post, paper, or documentation, you can cite it as:
@misc{act-workflow-syntax-2026,
author = {ClaudSkills},
title = {Act Workflow Syntax [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/act-workflow-syntax/}
}Grade A · scanned 2026-06-13 — free static scan against the OWASP Agentic Skills Top 10.
No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›
Browse all General skills in the ClaudSkills registry, or explore these other picks from the same category:
Part of Acreator Store — Adam Lankamer's AI tools: PerfectStudio · Ucaption · UTagger · AutoXPoster · TestYourSkills · AutomationFlows · Au Naturel · Telegram @acreatorstore
SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.