holocron/plugins/core/skills/agentsmd-author/SKILL.md

name, description, allowed-tools, metadata

name	description	allowed-tools	metadata
agentsmd-author	Use when the user wants to create or update a repo's AGENTS.md file ("write an AGENTS.md for this repo", "add setup/test instructions for agents", "update AGENTS.md", "give this package its own AGENTS.md") — even if they don't name the file explicitly, e.g. "document this for AI coding tools" or "make sure agents know how to run tests here". Writes/updates AGENTS.md by exploring the target repo for real build, test, lint, and style conventions — never invents commands. Supports nested monorepo placement (a subdirectory can get its own AGENTS.md following nearest-file-wins precedence). Closes every run by invoking agentsmd-audit inline, and calls provider-adapter-author when an existing provider file (CLAUDE.md, etc.) now duplicates what AGENTS.md owns. Do not use to review an existing AGENTS.md without changing it — use agentsmd-audit instead. Do not use to convert CLAUDE.md/.cursor/rules into a thin adapter — use provider-adapter-author instead.	Bash Read Write Edit	category source_keys version docs agents-md-official context7-websites-agents-md context7-agentsmd-agents-md 0.1.0

Gotchas

• Never invent a command. Every line under a setup/test/build section must come from something you actually found in the repo (package.json scripts, a Makefile target, a CI workflow step, a README). If you can't verify a command, don't include it.
• AGENTS.md has no required schema — don't force every common-sections-checklist heading into every repo. Include only sections that reflect something real about this repo; a thin, accurate file beats a padded, generic one.
• Nested placement is for genuinely different conventions, not convenience. Only create a subdirectory AGENTS.md when that subtree has its own build tool, stack, or conventions distinct from the root — otherwise you're duplicating content the root already covers, which the nearest-file-wins rule doesn't merge back together.
• This skill never touches CLAUDE.md, .cursor/rules/*.mdc, copilot-instructions.md, or similar provider files directly — that's provider-adapter-author's job. Detect and hand off; don't reconcile it yourself.
• This skill never audits on its own judgment — the closing agentsmd-audit invocation is mandatory, not optional, even when the change looks trivial.

Step 1 — Explore the target repo

Before writing anything, gather real facts: package manager and scripts (package.json, pyproject.toml, Cargo.toml, etc.), a Makefile or task runner, CI config (.github/workflows/, etc.) for the commands it actually runs, linter/formatter config files, and any existing docs (README.md, existing AGENTS.md) describing conventions. Note whether any subdirectory looks like its own package with a different stack.

Step 2 — Decide placement

• No AGENTS.md at the repo root yet → create one there first, covering whole-repo conventions.
• A subdirectory has materially different build/test tooling or conventions than the root → create or update a nested AGENTS.md there, scoped to what's different. Don't repeat root-level content — the nearest-file-wins rule means the nested file is read alone, not merged with the root.
• Otherwise → update the existing file(s) in place.

Step 3 — Write or update

Use only sections that reflect something real about the repo. Common sections from the agents.md standard — setup/build commands, code style, testing instructions, security considerations, commit/PR conventions — are a checklist to consider, not a template to fill blindly. Prefer concrete commands and file paths over general advice.

Step 4 — Check for an existing provider file

Look for CLAUDE.md, .cursor/rules/*.mdc, .github/copilot-instructions.md, or similar in the target repo. If one exists and now duplicates content the AGENTS.md you just wrote/updated already owns, invoke the provider-adapter-author skill on it to reconcile — don't rewrite it yourself.

Step 5 — Audit and report

Invoke the agentsmd-audit skill directly on the AGENTS.md file(s) you just wrote or updated. Resolve any FAIL findings before considering the work done — re-invoke this skill's own writing steps to fix them, then re-run the audit, same as any other close-the-loop check. Report what was created/changed, whether a provider file was reconciled, and the audit's final result.