Conciseness

The body is mostly efficient and assumes domain competence, but key rules are repeated across phases — the approval boundary is stated three times (Phase 4 "approving resource creation does not approve later app edits", Phase 5 "a resource-create approval is not approval to edit the app", Phase 8's re-confirmation) and the no-truthiness rule appears in both Phase 5 and Phase 6. Phase 4 and Phase 5 are over-stuffed run-on paragraphs that could be tightened without losing content.

Actionability

The tools table gives exact copy-paste commands ("harness list feature_flag --json --limit 50") with MCP tool and param names, and each phase prescribes concrete actions (grep lockfiles/manifests, confirm trafficType against List traffic types, tests at the wrapper and call-site boundaries). The core deliverable — the wrapper/facade code — has no inline example and is delegated to language-guidance.md, which cannot be verified in this bundle, leaving a minor gap.

Workflow Clarity

Eight clearly sequenced phases with explicit validation checkpoints and feedback loops: 404 triggers a recheck-then-handoff loop, traffic-type mismatch and unverified OpenFeature providers are STOP conditions, Phase 5 requires "STOP and wait for explicit approval", and Phase 7 requires tests to be reported as passed/failed/not run with mock-vs-live distinctions. This matches the anchor for clear sequencing with explicit validation and error-recovery loops.

Progressive Disclosure

The body is a readable overview with clear sections and one-level-deep, purpose-labeled references (References section plus inline links like "sdk-patterns.md — evaluation/tracking call signatures and search patterns"). However, all referenced files live outside the skill directory (../../../references/fme/) and none are present in this bundle, so the navigation cannot be verified and the skill is not self-contained — a minor organization gap.

Specificity

The description lists multiple concrete actions — "Detect the app's language, framework and any existing flag wrapper", "Map named treatments to branches with a safe, non-boolean-coerced fallback, then add tests at the wrapper and call-site boundary", "New flags delegate to create-feature-flag" — with comprehensive coverage of the instrumentation workflow and no vague filler.

Completeness

It explicitly answers both questions: what it does ("Gate application code behind an existing Harness FME feature flag" plus the detect/wrapper/test/delegate actions) and when to use it (a "Trigger phrases:" list plus a "Not for flag creation alone, metrics..., or first-time onboarding" exclusion clause), matching the anchor requiring concrete trigger phrases.

Trigger Term Quality

Explicit trigger phrases ("gate this code behind a flag, add flag check, wire up getTreatment, add SDK evaluation call") are natural phrasings users would say, spanning both user-level and developer-level language. A few common synonyms such as "feature toggle", "rollout" or "kill switch" are absent, keeping it just short of the comprehensive-synonyms anchor.

Distinctiveness Conflict Risk

It carves out a clear niche — instrumentation of an existing flag — and explicitly fences off the adjacent skills it could be confused with: "Not for flag creation alone, metrics (choose-metric, create-metric, instrument-metric), or first-time onboarding (feature-flag-onboarding)", with creation and targeting delegated to named sibling skills.