Skill name+description pairs are preloaded into every session, costing ~6,200 tokens across 39 skills before any skill is invoked. The authoring rules mandated that growth: skill-author:104 and description-quality.md:21 both required padding, while skill-author:102 (the deflating rule) had no FAIL condition behind it. Gates (blocking, no baseline file): - description 250 chars SUGGESTION / 400 FAIL, measured on the folded YAML value - body-only 600 words SUGGESTION / 900 FAIL, independent of the unchanged whole-file 2770-word / 500-line spec backstop - every boundary-clause routing target must resolve to a real skill or agent; catches skill-improve, neuledge-context and gitea-labels - agents take the description gates but deliberately no body gate; a test pins that absence Vale: DescriptionOpener widened to ^This\b, new CompositionNote rule banning architecture notes from descriptions. 10 hits, 0 false positives. Kyberforge's own four skills retrofitted: descriptions 3,364 -> 938 chars (-72%), bodies 8,306 -> 2,487 words (-70%), all via the apm-workflow dispatch pattern. Fixes the skill-improve dangling route and the agent-author misroute to manual review. Also fixes a pre-existing false positive where any line-initial 'read ' was flagged as interactive input, which had already caused two scripts to be rewritten around it. Refs: ADR-0020
63 lines
4.3 KiB
Markdown
63 lines
4.3 KiB
Markdown
---
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name: skill-author
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description: >
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Use when the user wants to create a new skill from scratch, or apply audit
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findings, grill output, eval results, or inline feedback to an existing one.
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Not read-only review -> `skill-audit`. Not agent files -> `agent-author`.
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allowed-tools: Bash Read Write Edit
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metadata:
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category: factory
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source_keys:
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- agentskills-home
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- agentskills-spec
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- agentskills-best-practices
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- agentskills-optimizing-descriptions
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- agentskills-evaluating-skills
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- agentskills-using-scripts
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- agentskills-quickstart
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---
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## Gotchas
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- A skill's `name` and `description` are preloaded into every agent's context every session, invoked or not; the body loads only on invocation. The description is the scarce budget.
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- The word gates are two different measurements, not one rule with two tiers. The 2,770-word / 500-line spec backstop counts the whole file including frontmatter; Step 3's gate counts the body alone. A file can sit well inside one and fail the other, so never unify them.
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- Never spawn a subagent to audit or recheck your own work here. Run `/skill-audit` inline, in the same context as the edits. Clean-context recheck belongs to `/forge`'s outer loop, and a self-spawned subagent can have its worktree torn down by concurrent cleanup, destroying an uncommitted draft.
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- Do not create new scripts unless a signal explicitly calls for it. Writing one from scratch requires transcript analysis that is out of scope here — flag the opportunity as a suggestion instead.
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## Step 1 — Dispatch
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| Condition | Flow | Reference |
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|---|---|---|
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| No skill directory at the target path | Create | `references/create.md` |
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| Directory exists, at least one improvement signal present | Improve | `references/improve.md` |
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| Directory exists, no signals | Stop and ask | — |
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Signals: grill output, `/skill-audit` findings, inline feedback, eval results, session context describing what went wrong. With none, ask: "No improvement signals found. Did you mean to create a new skill, or do you have feedback to apply?"
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Read only the reference matching the resolved flow — each is self-contained. Capture `git log --oneline -1` before touching the filesystem; Step 4 needs it.
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## Step 2 — Invocation axis
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Decide before writing any description: model-invoked or hand-invoked?
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- **Hand-invoked** — the user types `/name` and no agent should route to it. Set `disable-model-invocation: true` and write one plain human-facing sentence: no trigger list, no boundary clause. Worked example: `plugins/bin/.apm/skills/zoom-out/SKILL.md`. Skip Step 3's description rules.
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- **Model-invoked** — the default.
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## Step 3 — Contract
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Before writing or editing a description, or restructuring a body, read `references/contract.md` — the banned-content list, boundary form, include/exclude rubric and body patterns.
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Gates `/skill-audit` enforces in both flows:
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- **Description** — a trigger clause, at most one capability clause, and a boundary clause shaped `Not <thing> -> <skill-name>` whose target resolves to a real skill or agent. 250 characters SUGGESTION, 400 FAIL, value only.
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- **Body** — decision procedure only: ordered steps, branches, gates, and which reference to load when. 600 words SUGGESTION, 900 FAIL, body only. At two or more mutually exclusive flows a dispatch table is mandatory and each flow gets its own self-contained `references/` file.
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- **Gotchas** — at most five, each contradicting a reasonable default. A Gotcha paraphrasing a step below it is a FAIL.
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## Step 4 — Validate and close
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Run `/skill-audit` on the resolved skill directory. It checks name-to-directory match, description presence, leftover `FILL IN:` placeholders, both size budgets, boundary-target resolution and script hygiene — do not hand-check those first. Resolve every FAIL before reporting done.
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With `metadata.version` present, bump the **minor** version on create (new skills start at `0.1.0`) and the **patch** version on improve.
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**Commit verification.** Once the audit is clean, run `git add` and `git commit` — do not stop at staging. Re-run `git log --oneline -1` and confirm the hash changed from the one captured at Step 1. A non-empty `git diff --stat` is not proof: staged-but-uncommitted work is part of no commit and is silently lost if the tree is cleaned up first. Report done only once the hash has changed.
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