skill-check skillA
skill-check is agent-read markdown (skill) from olgasafonova/skillcheck-free: Validate Claude Code skills against Anthropic guidelines. Use when user says "check skill", "skillcheck", "validate SKILL.md", or asks to find issues in skill definitions. Covers structural and semantic validation. Do NOT use for anti-slop detection, security scanning, token analysis, enterprise checks, or Eval Kit generation; use skill-check-pro for those. Do NOT use for LinkedIn skill engagement; use skillcheck-engage for that..
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
mdr add olgasafonova/skillcheck-free/skill-check@v3.32.0mdr add olgasafonova/skillcheck-free/skill-check@sha256:5d7939476f6d7febPin 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.
[](https://markdownregistry.com/a/art_dpo5lhtu2wyfbefu)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v3.32.0 latest | 2026-08-31 | 0f24e6c | 18,648 B | A | view · diff |
| v3.28.0 | 2026-08-27 | d472da8 | 16,191 B | A | view · diff |
| v3.28.0 | 2026-08-03 | 05d3385 | 14,864 B | A | view · diff |
| v3.28.0 | 2026-07-30 | 525fe01 | 15,096 B | A | view · diff |
| v3.20.1 | 2026-06-21 | 9400b70 | 15,096 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (18648 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
olgasafonova/skillcheck-free · 36 stars · license MIT · pushed 2026-08-31 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_dpo5lhtu2wyfbefu GET https://markdownregistry.com/api/v1/resolve?ref=olgasafonova/skillcheck-free/skill-check GET https://markdownregistry.com/api/v1/blob/5d7939476f6d7feb9398784261174f561dd59dfce3ab098840a166676e70e2a9