github/awesome-copilot · skills/github-actions-hardening/SKILL.md

github-actions-hardening skillA

github-actions-hardening is agent-read markdown (skill) from github/awesome-copilot: Security hardening reviewer for GitHub Actions workflow files (.github/workflows/*.yml). Reasons about the Actions threat model that pattern matchers and general code linters miss — untrusted-input script injection, privileged triggers running fork code, mutable action references, and over-scoped tokens. Use this skill when asked to review, audit, harden, or secure a GitHub Actions workflow, when writing a new workflow, or for any request like "is this workflow safe?", "review my CI for security.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add github/awesome-copilot/github-actions-hardening@git:20260616.df56634
Exact content
mdr add github/awesome-copilot/github-actions-hardening@sha256:31a8e7483d978e62

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_v63lahegioknenrf.svg)](https://markdownregistry.com/a/art_v63lahegioknenrf)

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Versions

versioncommittedcommitsizeaudit
git:20260616.df56634 latest2026-06-16 df56634 9,852 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (9852 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

github/awesome-copilot · 39,108 stars · license MIT · pushed 2026-09-17 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_v63lahegioknenrf
GET https://markdownregistry.com/api/v1/resolve?ref=github/awesome-copilot/github-actions-hardening
GET https://markdownregistry.com/api/v1/blob/31a8e7483d978e6267941edefebbe42aaa946bb3d43c9095aa3db343d4a8ff06

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.