Conciseness

The body is dense and information-bearing (compact tables for verdict surfaces, severity normalization, and record fields) with no padding about concepts Claude already knows. Minor trimmable redundancy keeps it below 5: the Overview framing prose, the worked example re-demonstrating the severity table, and the References section re-listing links already cited inline.

Actionability

Mostly executable guidance: a concrete record-shape JSON example, a complete severity-mapping table, and a runnable gate_decision function. Gaps: graphql-inspector and buf parsing are deferred to the reference (whose implementation is "omitted for brevity"), and the pact pass case ("can-i-deploy-yes" -> info) appears only in the worked example, not in the severity normalization table, so mappings are not fully consistent.

Workflow Clarity

The five numbered 'How to use' steps are clearly sequenced with each step cross-linked to its section, and the worked example runs end to end with explicit remediation ("To ship, the provider restores the removed response and field, or marks each finding ratchet: true"). Minor validation gap: no stated handling for a missing or unparseable per-tool artifact beyond the 'if: always()' upload note, which keeps it below the level-5 anchor.

Progressive Disclosure

Clear overview structure with implementation details (gate script, CI wiring, artifact format) appropriately split into a single one-level-deep reference, references/gate-implementation-and-ci.md, which exists in the bundle and is clearly signaled via markdown links from both 'How to use' and 'References'. The body keeps only the conceptual model, matching the well-signaled one-level-deep anchor.

Specificity

The description names four concrete tools ("Pact can-i-deploy, oasdiff for OpenAPI, graphql-inspector for GraphQL and buf breaking for Protobuf") and multiple concrete actions ("one go/no-go CI step", "severity thresholds", "a reason per finding"), giving comprehensive coverage of what the skill does. Score 4 would require minor coverage gaps, which are absent.

Completeness

Both parts are explicit: "Use when a deploy should be blocked by any incompatible API contract across protocols" answers when with concrete trigger phrases, and "Combines ... into one go/no-go CI step with severity thresholds and a reason per finding" clearly answers what. Not 4, because the 'when' clause is specific rather than improvable.

Trigger Term Quality

Good natural keyword coverage: "deploy", "blocked", "incompatible API contract", "go/no-go CI", plus all four tool names users would mention. A few common variations are missing ("breaking change", "backward compatibility", "schema diff"), so it falls just short of the comprehensive-synonyms anchor at 5.

Distinctiveness Conflict Risk

The multi-protocol framing ("across protocols") plus the four named tools carve a clear niche distinct from any single-tool skill. Minor overlap risk remains: a user naming only "Pact" or "oasdiff" could match this gate instead of the per-tool skills, fitting the 'minor overlap with closely related skills' anchor.