promptimize
AGENTS.md0 starsChanged 4 months agoMITView on GitHub
Canonical agent instructions for this repository — CLAUDE.md simply imports this file, so every agent (Claude Code, Copilot, Cursor, Codex, …) reads the same rules. Agent Skills repository — skills live in skills/<name>/ (one purpose per skill), distributed via the plugin manifest in .claude-plugin/. - Eval-first: write skills/<name>/evals/evals.json before the SKILL.md body. - Frontmatter description is a single line (multi-line silently disables the skill), third person, with trigger phrasings and a "Not for …" exclusion. - name equals the folder…
- Commits and pushes
Where files are headingNew AGENTS.md files have more rules about keeping secrets out of the code, and fewer about code style.
Of the AGENTS.md files we read, the 31,439 first seen in the last six months, against the older ones: the kind of rule that gained most share, and the kind that lost most. About files like this in general, not this one, and an estimate, since a kind is a pattern in the words.
In this repository7 other files it gives its agents.
- CLAUDE.mdCLAUDE.md
- add-skillSkill
- publish-repoSkill
- engineer-agent-loopSkill
- evaluate-promptsSkill
- optimize-promptSkill
- write-agent-goalSkill
The file
We split this AGENTS.md into the rules it gives an agent
4 rules. About 0 are common, 1 is distinctive, and 3 are very specific to this project.
≈0
Common · estimate
Many files like this have a rule of this kind.
≈1
Distinctive · estimate
This author's own choices. Worth a look.
3
Very specific
Tied to their project's names, files or tools. Probably skip.
- Common
- Distinctive
- Very specific
- could be automatic: a setting could enforce it
- Very specific: line 16
Eval-first: write skills/<name>/evals/evals.json before the SKILL.md body.
- Very specific: line 22
Every added/changed skill updates the README catalog table, CHANGELOG.md, and its skills.sh.json grouping.
- Very specific: line 27
Never run
git commitorgit push: Leave every change in the working tree for the owner to review and commit. - Distinctive: line 32
ALL of it recursively, never commit its contents, never cite it as a committed path.
≈ “Common” is an estimate: at least 1 in 5 of the 40,246 AGENTS.md files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
Files
AGENTS.md
Canonical agent instructions for this repository — CLAUDE.md simply imports this
file, so every agent (Claude Code, Copilot, Cursor, Codex, …) reads the same rules.
Agent Skills repository — skills live in skills/<name>/ (one purpose per skill),
distributed via the plugin manifest in .claude-plugin/.
Commands
- Validate everything (the only gate):
make check - Validate one file:
python3 scripts/validate_skills.py --file skills/<name>/SKILL.md
Non-negotiable conventions
- Eval-first: write
skills/<name>/evals/evals.jsonbefore the SKILL.md body. - Frontmatter
descriptionis a single line (multi-line silently disables the skill), third person, with trigger phrasings and a "Not for …" exclusion. nameequals the folder name, kebab-case.- SKILL.md bodies < 500 lines; long material goes to
references/(linked one level deep); deterministic steps go toscripts/with non-zero exit on failure. - Every added/changed skill updates the README catalog table,
CHANGELOG.md, and itsskills.sh.jsongrouping. - Publication to skills.sh happens ONLY via the bundled
/publish-reposkill (slash-invoked, needs the owner's go-ahead) — never flip repo visibility ad hoc. Deployment model: docs/deploying.md. - Never run
git commitorgit push. Leave every change in the working tree for the owner to review and commit. (The bash-guard hook additionally blocks--no-verifyand force-pushes as a safety net; the server-sidemainruleset is the real gate.) .local/is gitignored personal material (only its README is committed) — read ALL of it recursively, never commit its contents, never cite it as a committed path.
Where things are
- Authoring rules:
docs/skill-authoring.md· Eval methodology:docs/evals.md - Session goal prompt:
.local/PROMPT.md— personal, created at scaffold time, never committed; if it is missing, ask the maintainer for their goal prompt. - Hooks:
.claude/hooks/(SKILL.md write-time validation, bash guard) — wired in.claude/settings.json; changes to them get PR-level scrutiny. - The
add-skillskill (.claude/skills/add-skill/) walks the authoring workflow — prefer it over ad-hoc skill writing. Thepublish-reposkill (.claude/skills/publish-repo/) walks skills.sh deployment.
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.

