Conciseness

Lean and disciplined throughout — it assumes competence and never explains what authn/authz, injection, or trust boundaries are; every section earns its place with no padding.

Actionability

Gives concrete, runnable commands ('rg for the handlers', 'cargo audit, npm audit, osv-scanner', 'git log -p the diff') rather than abstract direction, though guidance is procedural rather than copy-paste-ready code blocks.

Workflow Clarity

A clearly numbered 7-step procedure with an explicit validation checkpoint (step 7: verify reachability before reporting), a recovery/limits feedback loop (downgrade when reachability unproven), and a completion-criteria checklist.

Progressive Disclosure

Well-organized into clearly headed sections (Scope, Procedure, Findings format, Recovery, Completion criteria) with no nested references and no need for external files for an instruction skill of this scope.

Specificity

Names the domain and lists multiple concrete review actions — 'trust boundaries, authn/authz, injection, secret exposure, filesystem and network reach, dependency risk' — giving comprehensive coverage of what the skill does.

Completeness

Explicitly answers both what (review for exploitable defects across named categories) and when ('Use when the user asks for a security review, audit, or vulnerability check of concrete code'), plus a negative-boundary clause.

Trigger Term Quality

Includes natural phrases users would say ('security review, audit, or vulnerability check of concrete code') but omits common synonyms a user might naturally invoke such as 'pentest', 'threat model', or 'vuln scan'.

Distinctiveness Conflict Risk

Clear niche (exploitable defects in concrete code) with an explicit exclusion ('Not for general code review, lint, or compliance paperwork') that minimizes conflict with adjacent skills.