Names the domain (API documentation) and mentions some actions (documenting endpoints with schemas, error responses, interactive docs), but lacks comprehensive concrete actions like 'generate OpenAPI specs' or 'create example requests'.

Describes what the skill does but completely lacks a 'Use when...' clause or any explicit trigger guidance for when Claude should select this skill. Per rubric guidelines, missing explicit trigger guidance caps this at 2, but the 'when' is entirely absent, warranting a 1.

Includes relevant terms like 'REST API', 'endpoint', 'request/response schemas', 'error responses', and 'interactive docs', but misses common variations users might say like 'Swagger', 'OpenAPI', 'API docs', or 'document my API'.

Focuses on REST API documentation specifically which provides some distinction, but could overlap with general documentation skills or API development skills without clearer boundaries.

The content is mostly efficient but includes some redundancy in the examples (showing WRONG/RIGHT pairs that could be more compact). The framework-specific guidance is appropriately dense, but the examples section is somewhat verbose.

Provides fully executable code examples for FastAPI with complete Pydantic models, specific decorator parameters, and concrete documentation patterns. The WRONG/RIGHT comparisons give copy-paste ready templates for multiple scenarios.

The checklist provides a clear sequence of what to document, but there's no explicit validation workflow for verifying documentation completeness. For a documentation skill, a verification step like 'check /docs endpoint renders correctly' would strengthen this.

Content is reasonably organized with clear sections, but the extensive WRONG/RIGHT examples could be split into a separate EXAMPLES.md file. The verifier reference at the end is good, but the main content is somewhat monolithic.