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
61 lines
2.9 KiB
Markdown
61 lines
2.9 KiB
Markdown
---
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source_keys:
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- agentskills-spec
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- agentskills-best-practices
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---
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# Patterns Reference
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Upstream source: agentskills.io — best-practices (instruction patterns), specification.
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Read this when judging the **patterns** dimension: whether each instruction construct a skill uses
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is the right construct for the job and is correctly formed. Formation, not content — a Gotcha's
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*content* is judged in `references/body-discipline.md`.
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## The constructs and when each is right
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| Construct | Right when | Wrong when |
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|---|---|---|
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| Gotchas | An environment fact contradicts a reasonable default | Used as a summary of the steps below |
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| Prescriptive sequence | The operation is fragile and flag order or exact arguments must not change | Several approaches are equally valid |
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| Checklist | A multi-step workflow the agent must complete in order | A single step dressed up as a list |
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| Conditional reference | Detail is needed on one branch only | The reference is needed on every run and is loaded blind |
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| Output template | The agent must emit a specific format a caller consumes | The output is prose nobody parses |
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## Formation rules
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**Gotchas** sit near the top of the body, before the steps that would otherwise walk into them.
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Placement late in the body is a SUGGESTION, not a FAIL — the content is still correct, it is just
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read after the mistake.
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**Prescriptive sequences** that quote a fenced block inside another markdown block must escape the
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inner fence as `` \`\`\` ``. An unescaped inner fence terminates the outer block and the remaining
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instructions render as prose.
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**Conditional references** state a specific trigger: "If the API returns a non-200 status, read
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`references/api-errors.md`." The generic form — pointing at the directory and hoping — defeats
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progressive disclosure, because the agent either loads everything or loads nothing.
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`Kyberforge.PaddingPhrase` catches the common generic phrasing deterministically; other malformed
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forms are judgment.
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**Output templates** belong in the body when the agent must emit them on every run, and in
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`references/` when only one dispatch branch produces that output. A template inlined for a branch
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most invocations never take is body-discipline padding.
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## Auditing guidance
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Flag as FAIL if:
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- A Gotcha entry is a general tip or a reminder rather than a fact that defies a reasonable
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assumption
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- An inner code fence is unescaped inside a markdown block, breaking the render
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- A checklist wraps a single step
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- A conditional reference gives no trigger — `Kyberforge.PaddingPhrase` reports the common form
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- The agent must produce a specific format and no output template is given
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Flag as SUGGESTION if:
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- Gotchas are correctly formed but placed late in the body
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- An output template is present but permissive where the consumer needs it exact
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- A conditional reference names a trigger that is real but broader than the branch it guards
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