Conciseness

The body is largely lean and directive (short phases, exact threshold syntax like 'http_req_duration: [\'p(95)<800\']'), but a few sentences are rhetorical justification rather than instruction — e.g. 'this is the one phase in this skill (and arguably in this whole audit family) where proceeding on an assumption is a real-world mistake, not just a wasted review cycle' and 'this is production-adjacent risk management, not just test hygiene'. These match anchor 4's 'minor instances of over-explanation that could be trimmed', not anchor 5 where every token earns its place.

Actionability

Concrete, executable elements are present: the Docker fallback command 'docker run --rm -i grafana/k6 run - <load-test.js', k6 'stages' options, and exact threshold syntax. However, no complete copy-paste k6 script is provided — the skill describes what the script must contain rather than showing one — which leaves it at anchor 4 ('mostly executable guidance; concrete code or commands with minor gaps') rather than anchor 5's copy-paste-ready coverage of common cases.

Workflow Clarity

Phases 0-3 are clearly sequenced with strong validation checkpoints for a risky operation: the Phase 0 stop-gate ('If the user hasn't given clear, specific answers to all four, stop and ask'), objective pass/fail thresholds set before the run, live-abort conditions in Phase 2 ('abort immediately if error rates spike'), and Phase 3 comparison against the Phase 1 thresholds. This matches anchor 5's explicit validation and feedback loops; the destructive-operation cap of 3 does not apply since validation is thoroughly present.

Progressive Disclosure

No bundle files exist, and all content is appropriately inline with clear section headers (When not to use, Phases 0-3) — good structure matching anchor 4. It falls short of anchor 5's 'well-signaled one-level-deep references' because at ~85 lines with an Artillery alternative only mentioned in passing, there is unelaborated content that a reference file (e.g. a full example k6 script or Artillery config) would serve better; the under-50-line simple-skill exception also does not strictly apply.

Specificity

The description names the domain and concrete specifics — 'load-testing a site's or API's critical endpoints', 'Works on any HTTP-reachable site or API (k6 by default, Artillery as alternative)', 'confirm target, intensity, and time window first' — but it does not enumerate the full action set (scaffolding a script, running it, reporting latency/error findings), leaving minor gaps in coverage. It is above anchor 3 (which only requires 1-2 concrete actions) but short of anchor 5's comprehensive multi-action listing.

Completeness

Both 'what' ('load-testing a site's or API's critical endpoints... k6 by default, Artillery as alternative') and 'when' ('Use when...', 'Trigger on...') are explicit and concrete, and negative triggers are also given ('NOT for browser-rendering performance'). This clearly matches anchor 5's bar for explicit what-and-when with concrete trigger phrases.

Trigger Term Quality

Trigger phrases are natural user speech and well-varied: 'Trigger on "load test this", "how does this hold up under traffic", "stress test the API", "set up performance budget tests", or when an NFR audit flags load-testing as unverified'. This covers synonyms (load test, stress test, performance budget test, NFR audit) comprehensively, matching anchor 5.

Distinctiveness Conflict Risk

The description carves out a clear niche and explicitly redirects adjacent cases to sibling skills ('NOT for browser-rendering performance (use nfr-gap-audit's baseline or production-cwv-review)'), giving minimal conflict risk as in anchor 5.