Core content is concrete and useful, but it is padded with a 'Key Concepts' glossary defining SBOM/CycloneDX/SPDX/PURL/CPE/NVD and explanatory prose such as 'Transitive dependency analysis identifies components that are not directly included but are pulled in through dependency chains.' Not 3 because of this unnecessary explanation Claude already knows; not 1 because the bulk is actionable rather than vague.

Provides fully executable syft/grype commands ('syft alpine:latest -o cyclonedx-json > sbom-cyclonedx.json', 'grype sbom:sbom-cyclonedx.json --only-fixed --fail-on critical') and copy-paste Python for NVD queries and networkx graph building. Not 2 because the code is real and complete rather than pseudocode or abstract direction.

Seven clearly sequenced steps (Generate → Parse → Correlate → Build graph → Score → Cross-validate → Report), but no explicit validation checkpoints or error-recovery loops for batch NVD operations (no rate-limit retry/backoff, no SBOM-schema validation before parsing). Not 3 because missing feedback loops in batch operations cap it; not 1 because the sequence is clear and grype cross-validation provides some verification.

The body keeps detailed API-reference content inline (NVD API usage, CycloneDX/SPDX JSON structures, syft/grype commands) that duplicates references/api-reference.md, and never signals or links the bundle files (api-reference.md, agent.py). Not 3 because references are not signaled and content is not split out; not 1 because sections are well-organized rather than a monolithic wall or nested references.

Lists multiple concrete actions — 'Parses Software Bill of Materials (SBOM) in CycloneDX and SPDX JSON formats... correlating components against the NVD CVE database', then 'Builds dependency graphs, calculates risk scores, identifies transitive vulnerability paths, and generates compliance reports.' Not 2 because it enumerates many specific actions rather than naming only a domain and a few.

Answers both what (parses/correlates/builds/calculates/generates) and when via the explicit trigger clause 'Activates for requests involving...'. Not 2 because the 'when' is explicit rather than only implied, satisfying the 'Use when...' equivalent requirement.

Natural terms a security user would actually say: 'SBOM analysis, software composition analysis, supply chain security assessment, dependency vulnerability scanning, CycloneDX/SPDX parsing, or CVE correlation.' Not 2 because coverage is broad and matches real-world phrasing rather than single generic keywords.

Narrow supply-chain/SBOM niche with distinct triggers (CycloneDX/SPDX parsing, CVE correlation) unlikely to fire for unrelated skills. Not 2 because the niche is specific and the triggers are distinctive rather than overlapping with general scanning skills.