github-script
Write robust JavaScript for GitHub Actions github-script steps.
- Installs
- 58
- Last 24h
- —
- Trending rank
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- Security
- Not audited
Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/github/gh-aw --skill github-script- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads github-script automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
GitHub Action Script Best Practices
Use these guidelines for JavaScript executed by actions/github-script@v8.
Important Notes
- This action provides
@actions/coreand@actions/githubpackages globally - Do not add import or require for
@actions/core - Reference documentation:
Best Practices
- Use
core.info,core.warning,core.errorfor logging, notconsole.logorconsole.error - Use
core.setOutputto set action outputs - Use
core.exportVariableto set environment variables for subsequent steps - Use
core.getInputto get action inputs, withrequired: truefor mandatory inputs - Use
core.setFailedto mark the action as failed with an error message
Step Summary
Use core.summary.* function to write output the step summary file.
- Use
core.summary.addRaw()to add raw Markdown content (GitHub Flavored Markdown supported) - Make sure to call
core.summary.write()to flush pending writes - Summary function calls can be chained, e.g.
core.summary.addRaw(...).addRaw(...).write()
Common Errors
- Avoid
anytype as much as possible, use specific types orunknowninstead - Catch handler: check if error is an instance of Error before accessing message property
catch (error) {
core.setFailed(error instanceof Error ? error : String(error));
}
core.setFailedalso callscore.error, so do not call both
Typechecking
Run make js to run the typescript compiler.
Run make lint-cjs to lint the files.
Run make fmt-cjs after editing to format the file.
FAQ
What does the github-script skill do?
Write robust JavaScript for GitHub Actions github-script steps.
How do I install github-script?
Run npx skills add https://github.com/github/gh-aw --skill github-script in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/github-script/ (personal) or .claude/skills/github-script/ (project).
Which AI agents can use github-script?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is github-script safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains github-script?
It is published by github in github/gh-aw, and it is an official skill from the maker of the technology it covers. It has 58 recorded installs.
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