Skill Eval Designer

Use this skill to prove a skill changes agent behavior on realistic tasks.

Workflow

1. Identify skill purpose, trigger boundary, expected artifact, failure modes, and target agent behavior.
2. Read references/skill-eval-systems.md.
3. Create positive prompts, negative prompts, expected behavior assertions, and artifact checks.
4. Add edge cases for over-triggering, under-triggering, unsafe advice, missing references, and generic output.
5. Produce eval fixture, behavior example, and forward-test plan.

When not to use

• Do not use to author the skill procedure itself, design a whole marketplace, or claim quality from static examples alone.
• Do not create an eval when the behavior is fully deterministic and a unit, contract, property, or snapshot test is the stronger oracle.

Guardrails