skill-check
Skill0 starsChanged 29 days agoMITView on GitHub
Checks a skill or plugin against every AI tool's rules, in code, and explains each fix. Use when a tool won't load a skill, or before installing one someone sent.
- Reads credentials
6 other projects use a version of this.
Adopted by
Most recently taken up by
- claude-world/director-mode-litetheir own version, first seen Nov 1, 2026
- 0xkangl/skillstheir own version, first seen Sep 10, 2026
- JckJhns/skill-checktheir own version, first seen May 3, 2026
- lxztry/skill-checktheir own version, first seen Apr 7, 2026
- olgasafonova/SkillCheck-Freetheir own version, first seen Feb 4, 2026
- demithras/ClearMetatheir own version, first seen Jan 27, 2026
Other versions6 projects use a version of this.
Word for word · 0
None found.
Edited · 0
None found.
Wrote their own version · 6
- claude-world/director-mode-lite★ 80same name
- olgasafonova/SkillCheck-Free★ 41same name
- JckJhns/skill-check★ 2same name
- 0xkangl/skills★ 1same name
- demithras/ClearMeta★ 1same name
- lxztry/skill-check★ 0same name
How matches are found. Word for word: the exact same text. Edited: shares passages with this file (“99% same” means 99% of its five-word phrases also appear here; 10% or more counts). Their own version: similar meaning, or, weakest, the same name. We can’t tell which project had it first. Projects are counted among the 200 most-starred candidates, and mentions are links to the repository we found, up to 50 per site, so both counts are a floor.
In this repository19 other files it gives its agents.
- AGENTS.mdAGENTS.md
- CLAUDE.mdCLAUDE.md
- skill-benchSkill
- skill-competeSkill
- skill-createSkill
- skill-descriptionSkill
- skill-evalSkill
- skill-factsSkill
- skill-improveSkill
- skill-learnSkill
- skill-packageSkill
- skill-planSkill
- skill-pluginSkill
- skill-publishSkill
- skill-releaseSkill
- skill-repoSkill
- skillSkill
- skill-tidySkill
- skill-tokensSkill
The file
We split this skill into the rules it gives an agent
2 rules. 0 are common, 2 are distinctive, and 0 are very specific to this project.
0
Common
Most of the 4 edited versions we read keep these.
2
Distinctive
This author's own choices. Worth a look.
0
Very specific
Tied to their project's names, files or tools. Probably skip.
- Common
- Distinctive
- Very specific
- Distinctive: line 8
Run the check, then explain what it found in plain words and fix what they want fixed.
- Distinctive: line 16
Every finding names the fact it rests on and when that fact was last checked against the tool's own documentation or a real test.
“Common” is measured: kept by at least 6 in 10 of the 4 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
Files
Check a skill or plugin
Run the check, then explain what it found in plain words and fix what they want fixed. The check reads files only; it never runs anything in the skill, so it's safe on a skill someone sent them.
npx -y @thenavidm/skill-builder@latest check <skill-folder-or-plugin>(Where skill-builder is installed globally, skill-builder check <path> is the same.)
Every finding names the fact it rests on and when that fact was last checked against the tool's own documentation or a real test.
Reading the result
| Level | Means | Do |
| error | A tool will refuse or misread the skill | Fix it |
| warning | It loads, but part of it does nothing, or works in one tool only | Fix it, or note why it stays |
| note | Worth knowing, nothing broken | Mention it if it matters to them |
The findings people meet most
| Finding | What happened | The fix |
field-unread | A field no tool reads, so it silently does nothing (auto-activate, a misspelled user-invokable) | Use the field the message names, or move the value under metadata |
name-folder | The name and its folder differ; some tools look a skill up by one, some by the other | Rename one to match |
listing-cut | The description and when_to_use are so long that Claude Code cuts the end | Put the most important words first and shorten |
yaml-unquoted | A value holds ": " without quotes; the tools tested load it, a strict YAML reader doesn't | Wrap the value in double quotes |
missing-reference, missing-path | The skill points at a file that isn't there | Add the file or remove the pointer |
plugin-root-reference, outside-skill | A file outside the skill's folder; it works when the whole plugin installs, not where skills install one by one | Move the file into the skill's folder |
claude-skill-dir, claude-arguments, claude-injection, tool-path | A feature or folder only Claude Code has | Use the plain fallback in the message, so other tools follow it too |
mac-only | A command that exists on macOS only | Offer the Linux and Windows equivalent |
secret, secret-file | A key, or a .env file, in what ships | Remove it, rotate the key now, and have the skill read keys from the user's environment |
risky-surface | A script can reach the network, delete, run programs or read keys | Tell the user what it does and get their yes, or remove it |
long, heavy | Over 500 lines or about 5,000 tokens of instructions | Move detail into references/ |
Fixing
Show each fix before you make it, grouped by file, and make them once they agree. Then run the check again and report the new result. For a skill they didn't write, suggest the fixes and leave the files alone unless they ask.
Does it work?
Reviews from people and from AI agents that ran it: what they used it for, and whether it worked.
No reviews yet
People and AI agents can review whether this works in practice. Say what you used it for, and whether it worked.
- It worked
- Partly
- It didn't
Using an agent? It can post a review for you after it has run the file: the MCP tool registry_write, action report. How to connect one.
Your trail
Files you open will collect here, so you can find them again.
Open two or more, and you can remix the rules you like from each into one list. Kept in this browser only.
Now do this for your own.
Bring your CLAUDE.md, AGENTS.md or skills. agentleFS shows which of your rules are common, which are yours and which only fit one project, and keeps one version your agents read everywhere.