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actionlint

Static checker for GitHub Actions workflow files

Developer Tools & Git ★ 4.3k stars Easy setup MIT

actionlint is a static linter for GitHub Actions workflow files that catches syntax errors, expression mistakes and shellcheck issues. It runs locally as a single binary.

Official siteSource code

Key features

  • Lints Actions workflows
  • Shellcheck integration
  • Expression checking
  • Single binary

Strengths

  • Released under the MIT license
  • Easy to set up — beginner-friendly
  • Active community (4.3k GitHub stars)
  • Written in Go

Is actionlint secure?

OSV.dev has no published security advisories for actionlint's repository. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

Source: OSV.dev, checked 2026-10-14. How this is measured.

actionlint replaces

Self-hosted GitHub Actions web editor alternatives

Health badge

Maintain actionlint? Add its health score to your README. The badge links back to this page.

SelfHostIndex: 80 · excellent

Markdown
[![SelfHostIndex health score for actionlint](https://selfhostindex.com/badge/actionlint.svg)](https://selfhostindex.com/app/actionlint/)
HTML
<a href="https://selfhostindex.com/app/actionlint/"><img src="https://selfhostindex.com/badge/actionlint.svg" alt="SelfHostIndex health score for actionlint"></a>
reStructuredText
.. image:: https://selfhostindex.com/badge/actionlint.svg
   :alt: SelfHostIndex health score for actionlint
   :target: https://selfhostindex.com/app/actionlint/

The score is recomputed on every nightly rebuild from public repository data — see how it is calculated.

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