Deferred item from PR #85 review. Per ADR-0013: cherry-picks two low-noise rules from trialing write-good/alex against the real corpus (VagueQualifier, SentenceOpenerThereIs) into styles/Kyberforge rather than adopting either package wholesale (both are tuned for blog prose and were noisy on this repo's terse, imperative instruction files - see the ADR's rejected-rule list). Adds a new skill-size-check pre-commit hook enforcing agentskills.io's 500-line/5,000-token SKILL.md ceiling, currently unenforced. Fixes the 28 resulting violations across 20 existing SKILL.md/agent files so the enforcing pre-commit hook lands clean. governance.md/CONTROLS.md were evaluated and excluded as rule sources - they're org/CI-infrastructure controls, not prose patterns Vale can express. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QUDczvw1H3eEeMD29Q9Lbi
skill-author
Author and refine skills conforming to the agentskills.io specification — create new skills from scratch or apply improvement signals to existing ones.
What it does
Routes to one of two flows based on context: if no skill directory exists at the target path, it scaffolds the directory from annotated templates, fills in SKILL.md and supporting files, and validates the result. If an existing skill directory and improvement signals are both present, it groups those signals by root cause and applies targeted edits, then re-validates. In both flows, bumps the skill's metadata.version when present (minor for create, patch for improve).
Before you start
- Run
/grill-meto resolve design decisions before creating a new skill - Collect domain research, examples, and constraints
- Know the skill name (kebab-case) and destination path
Placement
| Type | Path |
|---|---|
| Direct (available immediately after install) | ~/.agents/skills/<name>/ |
| Plugin (installed via marketplace) | plugins/<plugin>/skills/<name>/ |
If the destination is inside a plugin directory, read references/deployment-modes.md — cache isolation rules apply.
Usage
/skill-author
Files
| File | Purpose |
|---|---|
README.md |
Human-readable overview of the skill and its files |
SKILL.md |
Skill instructions for agents |
scripts/new-skill.sh |
Copies annotated templates to the destination to scaffold a new skill |
references/deployment-modes.md |
Plugin vs standalone differences and cache isolation rules (loaded on demand) |
references/scripts.md |
Package runners, inline dependency patterns, and full script contract (loaded on demand) |
references/sources.md |
Upstream research sources and which skill files each contributed to |
assets/templates/SKILL.md |
Annotated SKILL.md template |
assets/templates/README.md |
Annotated README template for the new skill |
assets/templates/scripts/README.md |
Placeholder for bundled scripts |
assets/templates/references/README.md |
Placeholder for reference docs |
assets/templates/references/sources.md |
Sources provenance template for new skills |
assets/templates/assets/README.md |
Placeholder for static assets |
assets/templates/tests/README.md |
Placeholder for test files |
tests/new-skill.bats |
Bats test suite for scripts/new-skill.sh |
tests/README.md |
Setup instructions for bats-support and bats-assert test dependencies |