- skill-audit: remove contradictory skip clause in Step 2 (binary only) - skill-improve: drop redundant "Fix the root" heading; keep specific directive - skill-write: add section-rename guidance to body discipline step - template SKILL.md: make Instructions heading an explicit FILL IN placeholder - template README.md: remove "Invoke via your agent tool:" prefix to match convention Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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name, description, allowed-tools, metadata
| name | description | allowed-tools | metadata | ||
|---|---|---|---|---|---|
| skill-audit | Use when the user wants to review a skill they wrote, says "audit this skill", "check if my skill follows best practices", "review my SKILL.md", or wants to know if a skill is ready to ship — even if they don't use the word "audit". Audits a skill directory against the agentskills.io specification — structural checks plus qualitative review of description quality, body discipline, formatting, file structure, and internal consistency. Produces a compact findings report (findings only, no PASS noise) with Why and Fix per finding, suitable for agent handoff to /skill-improve or human auditability. Do not use to run evals, fix application code bugs, or perform general code review unrelated to skill quality. Do not use when the user wants improvements applied — use /skill-improve instead. | Bash Read |
|
Gotchas
- Do not output PASS/FAIL per check while auditing — gather findings internally and surface them only in the Step 4 report. Narrating each check as you go is the default failure mode here.
Step 1 — Structural validation
bash scripts/validate.sh <skill-dir>
Note any structural FAILs — they will appear in the report as a ### Structure dimension. If the script cannot execute (python3 unavailable, Bash denied, or permission error), perform structural checks manually: name format, name matches directory, description length ≤1024 chars, SKILL.md ≤500 lines, no unfilled FILL IN: placeholders, scripts executable and free of interactive prompts.
Step 2 — Read all skill files
Read every file in the skill directory: SKILL.md, README.md (if present), all files in scripts/, references/, and assets/. Skip binary files only. Do not skip text files — internal consistency checks require the full picture.
Step 3 — Qualitative audit
Work through each dimension internally. Collect findings only; report them in Step 4. Cite file and line number for every finding.
Description
- Imperative phrasing: does it use "Use when..." not "This skill..."?
- Specificity: are capabilities stated precisely ("parses OpenAPI specs") or vaguely ("helps with APIs")?
- Indirect triggers: does it cover cases where the user doesn't name the domain directly?
- Near-miss exclusions: are "Do not use when..." clauses present if a near-miss skill could steal activations?
- Length: under 1024 characters?
If a description finding is borderline or the distinction between PASS and FAIL is unclear, read references/description-quality.md.
Body discipline
For each sentence in the body, apply: "Would the agent get this wrong without this sentence?" Flag any that answer "no" as padding.
- Defaults not menus: every decision point gives one default + one escape hatch, not a list of options
- Why rationale: include/exclude rules explain why, not just what
- Control calibration: prescriptive for fragile or critical sequences (e.g. a script invocation where flag order or exact arguments must not change); flexible where multiple approaches are valid
If uncertain whether a sentence is padding or whether a control decision is correctly calibrated, read references/body-discipline.md.
Patterns
Check each pattern is appropriate and correctly formed:
- Gotchas: placed near the top; each entry is a specific fact that defies a reasonable assumption — not a general tip
- Prescriptive sequence: inner code fences escaped as
\``` when nested inside a markdown block - Checklists: used for multi-step workflows, not single steps
- Conditional references: specific trigger stated ("If X, read
references/file.md") — not a generic "see references/" - Output templates: present when the agent must produce a specific format; absent otherwise
File structure
- Permitted directories:
scripts/,references/,assets/,tests/; flag any other unlisted directory as FAIL — the spec allows additional dirs but this skill permits only these four to keep skills focused scripts/contains only executable code agents can run; test files (.bats,*_test.*,test_*.sh) inscripts/are a FAIL — they belong intests/- No non-spec files at the skill root (e.g. META.md, extra config files outside permitted directories)
- Optional directories contain real content — not just unfilled placeholder READMEs
README.mdpresent and accurately describes the skill and its files- No cross-plugin path references in SKILL.md, scripts/, references/, or assets/ — paths using
../,../../, or absolute repo paths (e.g.plugins/kyberforge/skills/...) break when the plugin is installed to a cache; flag any found tests/is exempt from the cross-plugin path check — test files are dev-only and may reference repo-level test infrastructure (e.g. a sharedtests/test_helper/). This dependency must be declared intests/README.md; flag if tests exist buttests/README.mdis absent or does not document the dependency
Formatting
- Heading levels consistent: H2 for main sections, H3 for subsections
- Code blocks fenced with a language tag where applicable (
bash,markdown,python) - Consistent whitespace: blank line between sections, consistent list indentation
- No broken relative paths in file references
Scripts
- No interactive TTY prompts (
read,input(),readline) --helpexposed with concise usage- Data to stdout, diagnostics to stderr
- Idempotent ("create if not exists")
- Meaningful exit codes documented in
--help --dry-runpresent for destructive operations
Internal consistency
- SKILL.md steps match what scripts actually do
README.mdfile table lists every file that exists — no missing entries, no stale entries- Placeholder READMEs in
scripts/,references/,assets/consistent with what SKILL.md says about each directory
Step 4 — Report
Open with a coverage line listing every dimension checked:
Checked: structure · description · body-discipline · patterns · file-structure · formatting · scripts · internal-consistency
Then output only dimensions that have findings, grouped under H3 headings, FAILs before SUGGESTIONs within each dimension. Omit clean dimensions entirely — their absence confirms they passed.
For each finding:
FAIL/SUGGESTION <finding> — file:line
Why: <why this is a problem>
Fix: <exact change — quote before/after where applicable>
Close with a result block:
## Result
PASS / PASS (N suggestions) / FAIL (N fails · M suggestions)
Run /skill-improve to address findings.
Omit the /skill-improve line when there are no findings. Do not apply fixes — report and propose only.