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name: agent-skill-architect description: Creates, reviews, repairs, and optimizes agent skills. Use when a skill needs authoring, trigger tuning, evals, checks, packaging readiness, or drift controls.

Agent Skill Architect

Create and improve reusable agent skills without colliding with default skill creators.

Standard

A skill is ready only when trigger, workflow, resources, checks, evals, and stop conditions prevent drift, hidden assumptions, and project-specific hardcoding.

Invariants

• Unique lowercase hyphenated name; no skill-creator, reserved, vague, or existing names.
• Description is the trigger surface: third person, concise, specific, and includes Use when ....
• SKILL.md stays procedural; details live in one-level references/, checks in scripts/.
• Risk decides strictness: fragile tasks need exact gates and stop conditions; flexible tasks get defaults with bounded escape hatches.
• No inference through missing behavior, resources, validation, or boundaries.
• New or changed skills need realistic evals, including near misses when the harness supports them.
• Self-audit against evidence; report missing checks or evals.

Workflow

1. Identify mode: Create, Review, Repair, Optimize Description, or Package Readiness.
2. Read repository rules and inspect existing skill names to avoid collisions.
3. Capture intent, trigger contexts, non-trigger boundaries, outputs, tools, resources, stop conditions, and verification evidence.
4. Draft or update SKILL.md, references, scripts, docs, and evals.
5. Apply references/quality-gates.md.
6. Create or update evals/evals.json using references/eval-design.md.
7. Add deterministic scripts only for fragile/repeated checks.
8. Run node <agent-skill-architect-skill-root>/scripts/check_skill.mjs <skill-dir>.
9. Run plugin-eval analyze <skill-dir> --format markdown when available.
10. Self-audit trigger fit, ambiguity, disclosure, security, eval coverage, deterministic checks, and residual risk.

Stop Conditions

Stop instead of writing or approving a skill when:

• behavior is unsafe, deceptive, secret-extracting, or outside user intent
• the name collides with an existing skill or reserved term
• trigger and non-trigger boundaries cannot be stated precisely
• workflow depends on missing files, unavailable tools, private data, or unapproved services
• eval expectations cannot be made observable enough for review
• required checks fail and the fix would change user intent

Reference Map

• references/quality-gates.md: skill structure, trigger, strictness, progressive disclosure, security, and packaging gates.
• references/eval-design.md: eval prompt design, near-miss tests, description optimization, and benchmark evidence.
• scripts/check_skill.mjs: deterministic local skill-shape checker.

Approval Rule

Do not approve a skill on prose quality alone. Approval requires deterministic checks, realistic evals or an explicit N/A reason, concise self-audit, and a clear statement of any remaining risk.