A fresh /code-review of the APM-native authoring retarget (PR #93) found several correctness bugs beyond the ones already fixed on this branch: - new-agent.sh silently walked a marker-less subdirectory under $HOME up to user scope, contradicting its own usage text ("user scope is checked directly, no walk-up") and risking scaffolding into shared global ~/.claude or ~/.copilot directories instead of the intended local path. - The hand-copied apm.yml type: manifest detector in new-agent.sh and new-skill.sh accepted mismatched quotes (e.g. `type: "skill'`) that validate.sh's regex correctly rejects, and silently dropped a final apm.yml line lacking a trailing newline — causing the scaffolder and validator to disagree on scope for identical input. - Plugin-scope agent frontmatter could still contain the apm-agent.md template's HTML comments at ship time with no audit signal, yet apm compile copies frontmatter verbatim and <!-- --> breaks YAML parsing on both downstream harnesses. - ADR-0016 asserted agent-audit already implements a SUGGESTION heuristic for tool-restriction-needing plugin-scope agents; it doesn't. - agent-audit/README.md still described the old plugin-pair model this PR replaced with a single-file allowlist model. - validate.sh's project/user-scope CC-only/Copilot-only field checks and counterpart-missing check lost their only test coverage when the old plugin-pair fixture was deleted. Also replaces an echo-into-sed two-value parse (4 forks per call) with a single space-separated echo + read in both scaffolders. Regression tests added for every fix above, including one for a bug this pass introduced and the test suite caught: an initial two-line echo + `read` attempt silently dropped the second value, since `read` consumes only one line regardless of embedded newlines. Full suite: 158 bats tests, 39 shell-script tests, 12/12 summary categories, 0 failures. Refs: #89, #93
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
scripts/new-skill.sh resolves the mode automatically by walking up from the given path — see SKILL.md Step 1 for the full algorithm.
| Mode | Path | Chosen when |
|---|---|---|
| Standalone | <path>/<name>/ |
No apm.yml with a top-level type: field is found walking up from <path>, before hitting .git or the filesystem root |
| Package (APM) | <package-root>/.apm/skills/<name>/ |
A type-bearing apm.yml is found at or above <path> — <path> just needs to be somewhere inside the package |
If the destination resolves inside an APM package, read references/deployment-modes.md — self-containment rules apply to apm compile output the same way they applied to plugin cache isolation.
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 |
Walks up from the given path to resolve package vs standalone mode, then copies annotated templates to the resolved destination |
references/deployment-modes.md |
APM package vs standalone differences and self-containment/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 |