Conciseness

The body is lean — every sentence delivers a command, a fact about tool behavior, or an instruction (e.g. "Run `npx supercov security`... `npx supercov docs security` prints the guide for the installed version"). No concept Claude already knows is explained, and there is no padding; every token earns its place.

Actionability

Commands are copy-paste ready and cover the common cases: `npx supercov security` (whole repo), `npx supercov security patch` (a change), `npx supercov docs security` (versioned guide), plus the exact `TYPESAFE_API_KEY` variable and a concrete fallback procedure for a missing key. Fully executable with no gaps.

Workflow Clarity

This is a simple single-purpose skill and the primary action is unambiguous, but the body also sequences the conditional path explicitly: "If the key is missing the command says so: tell the user how to set it, then review the code by hand and say Supercov did not check it" — an error-recovery loop with a required disclosure step. Anti-drift check: no missing validation for risky operations; the fallback and honesty requirement are both explicit.

Progressive Disclosure

The skill is under 50 lines with no external references needed, and no bundle files (references/, scripts/, assets/) exist to mis-route. The body is cleanly organized into two focused paragraphs — invocation modes, then data-handling/consent and fallback — which for a skill this size is the appropriate structure.

Specificity

The description lists multiple concrete, third-person actions — "Scans a repository's source for security vulnerabilities", "pointing to the line of each finding and mapping it to CWE classes" — with no vague filler. This matches the anchor for multiple specific concrete actions with comprehensive coverage; nothing is generic and there is no gap in what it claims to do.

Completeness

It explicitly answers "what" (line-level findings mapped to CWE classes via the supercov CLI) and "when" via a concrete trigger clause: "Use when the user asks for a security scan or audit, whether code is secure, or to find vulnerabilities...". Both halves are explicit with concrete triggers, matching the top anchor.

Trigger Term Quality

Phrases like "security scan or audit", "whether code is secure", "vulnerabilities, injection, hardcoded secrets or other insecure code" give comprehensive natural-language coverage with synonyms (scan/audit, vulnerabilities/insecure code). This is exactly the kind of wording a user would naturally say; no common synonym is missing.

Distinctiveness Conflict Risk

The security-vulnerability scanning niche (supercov CLI, CWE mapping, injection/hardcoded-secrets triggers) is distinct from general code-review or document skills, and the triggers are unlikely to fire for the wrong skill. Anti-drift check: it is not merely "mostly distinct" with overlap risk (anchor 4) — the trigger vocabulary is specific to security auditing.