The skill is comprehensive but verbose in places, with some explanatory text that Claude would already know (e.g., 'the same way you would not ship a car without seatbelts'). The WRONG/RIGHT pattern is useful but adds length; some sections could be tightened.

Excellent actionability with fully executable, copy-paste ready code examples for all 10 security requirements. Each section includes concrete Go code with proper imports, specific package names, and real implementation patterns.

Clear sequencing with the middleware wiring order section explicitly showing how to compose all pieces. The checklist at the end provides validation checkpoints, and the WRONG/RIGHT pattern makes the correct approach unambiguous.

The skill is a long monolithic document (~500 lines) that could benefit from splitting detailed implementations into separate files. References to verifiers are present but the main content is all inline rather than appropriately distributed.

Lists multiple specific concrete actions: CORS, security headers, rate limiting, input validation, SQL injection prevention, CSRF protection, TLS configuration, secrets management, graceful shutdown, and request timeouts.

Clearly answers both what (security defaults including CORS, headers, rate limiting, etc.) AND when ('whenever you create or modify any Go web service -- do not wait for a security review or explicit request').

Includes relevant technical terms like 'Go HTTP server', 'CORS', 'rate limiting', 'SQL injection', but these are more technical jargon than natural user language. Missing common variations like 'web app', 'API security', 'secure my server'.

Clear niche targeting Go HTTP servers specifically with security focus. The combination of 'Go' + 'HTTP server' + 'security' creates a distinct trigger profile unlikely to conflict with general Go skills or general security skills.