Lean body that assumes Claude's competence — it never explains what CI, guardrails, or smoke tests are, and every section earns its tokens with actionable guidance rather than filler.

Gives concrete executable commands ("make verify", "just verify", "pnpm test", "cargo test", "curl http://127.0.0.1:3000/health", "node dist/cli.js --help") plus a concrete verdict taxonomy and a copy-ready output template.

A clearly numbered 1–5 workflow with explicit checkpoints ("Run deterministic guardrails first", "before handoff, run the canonical local gate") and a feedback/synthesis step that enumerates verdict criteria and error-recovery guidance.

The body is well-sectioned and signals one-level-deep references (evidence-rules.md, simplification.md, verification.md) both inline and in a References list, but the references/ directory does not exist in the bundle, so the linked detail content is missing and navigation is broken.

Lists multiple concrete actions — "running repo guardrails", "exercising changed behavior end to end", "collecting evidence", "catching obvious self-correctable issues" — and concrete verdicts, matching the score-3 anchor for specific concrete actions.

Explicitly answers what ("Self-check an agent's own completed change before independent review") and when ("Use when...") with an explicit trigger clause, satisfying the both-what-and-when anchor.

The "Use when running repo guardrails, exercising changed behavior end to end, collecting evidence, or catching obvious self-correctable issues" clause gives good coverage of natural phrases a user would say when needing this pass.

A clear builder-owned pre-review niche with distinct triggers, and the negative boundary "Do not use to audit someone else's diff, branch, or PR" sharply separates it from independent-review skills.