MAX_WORDS=2900 was calibrated to the corpus median density and carried no
margin: at the densest observed 7.22 chars/word (~1.81 tokens/word) it permits
~5,240 tokens against the 5,000 it proxies for. 2770 holds the worst observed
density under the ceiling. The largest SKILL.md is 2,489 words, so the change
costs nothing today — 281 words of margin — and the header comment now argues
the new calibration rather than swapping the digits.
Both enforcement points move together, and a new test asserts they agree, since
a SKILL.md passing its own audit while the commit hook blocks it is the
disagreement this pair exists to prevent.
CONTEXT.md is deliberately left ungated: it is 2,816 words, and gating it would
block the build. Recorded here so the omission reads as a decision rather than
an oversight.
skill-audit's manual-fallback path listed only the line ceiling, so an agent
taking that path passed an oversized SKILL.md the hook then rejected. The word
ceiling is now named alongside it. agent-audit is deliberately unchanged: the
size hook scopes to SKILL.md only and agent-audit's validate.sh has no word
gate, so claiming it there would be false.
The Vale research doc still showed the MDX {/* vale off */} form under a
Markdown heading, contradicting CONTEXT.md and vale-run's troubleshooting
reference — that form suppresses nothing in plain .md. Fixed in both places it
appeared.
tests/run-tests.sh used mapfile (bash 4.0+) with unguarded array expansion,
though AGENTS.md tells contributors to run it and macOS ships bash 3.2. It now
collects via a while-read loop over process substitution and guards every
expansion. The newline-delimited find|sort pipeline is kept rather than -print0
with sort -z, whose BSD portability is the weaker link, and which matches
mapfile -t's previous behaviour exactly.
Refs: #85
ADR: 0013
skill-audit
Audit a skill directory against the agentskills.io specification. Runs structural validation then a qualitative review across description quality, body discipline, patterns, formatting, file structure, scripts, and internal consistency, plus a provenance chain check.
What it does
- Runs
scripts/validate.shandscripts/validate-provenance.shfor structural and provenance checks - Reads all files in the skill directory
- Applies qualitative checks across seven dimensions
- Outputs a compact findings report — findings only, grouped by dimension, each with Why and Fix — and a result block with handoff to /skill-improve
Usage
/skill-audit
Provide the path to the skill directory to audit when invoking.
Files
| File | Purpose |
|---|---|
SKILL.md |
Skill instructions for agents |
scripts/validate.sh |
Structural validator — checks name format, name matches directory, description length, line count, placeholder detection, script executable bit, and interactive-prompt detection |
scripts/validate-provenance.sh |
Provenance validator — checks sources.md completeness, source_keys/slug consistency, Contributing files existence, bidirectional linkage, Research doc: fields, and upstream research doc alignment |
references/description-quality.md |
Spec-grounded rubric for description auditing — loaded when a finding is borderline |
references/body-discipline.md |
Spec-grounded rubric for body discipline auditing — loaded when padding vs necessity is unclear |
references/sources.md |
Provenance record — agentskills.io sources that informed this skill and which files each contributed to |
tests/validate.bats |
Bats test suite for validate.sh |
tests/validate-provenance.bats |
Bats test suite for validate-provenance.sh |
tests/README.md |
Setup instructions for bats-support and bats-assert test dependencies |