Conciseness

The body is mostly efficient procedural content with little concept-padding, but the ~150 lines spell out report templates and per-issue recommendation phrasings that could be tightened without losing clarity.

Actionability

It provides concrete, executable commands ('openspec list --json', 'openspec status --change', 'openspec instructions apply') and precise parsing rules ('- [ ]' vs '- [x]'), but a few steps remain abstract ('search codebase for keywords', 'assess if implementation likely exists').

Workflow Clarity

The process is clearly sequenced across eight numbered steps with prioritization tiers (CRITICAL/WARNING/SUGGESTION) and false-positive guidance acting as checkpoints, though explicit validate-fix-retry feedback loops are only implied.

Progressive Disclosure

The body is self-contained (no bundle files exist) and well-organized into clearly labeled sections (Steps, Verification Heuristics, Graceful Degradation, Output Format); the embedded report template could arguably live in a reference file, a minor organization gap.

Specificity

It names the domain ('implementation matches change artifacts') and one concrete action (verify matches) plus the three verification dimensions ('complete, correct, and coherent'), but coverage of concrete actions is limited rather than comprehensive.

Completeness

It explicitly answers both what ('Verify implementation matches change artifacts') and when ('Use when the user wants to validate that implementation is complete, correct, and coherent before archiving') with a concrete trigger clause.

Trigger Term Quality

Natural trigger phrases are present ('Use when the user wants to validate', 'implementation is complete', 'before archiving'), giving good keyword coverage, though a few common synonyms/variations are missing.

Distinctiveness Conflict Risk

The niche (verifying openspec change artifacts before archiving) is mostly distinct with clear triggers, carrying only minor overlap risk with closely related spec/code-review skills.