The body is lean and assumes Claude's competence — terms like 'p50/p95', 'feature-flag gating', and 'autoresearch-style loop' are used without explanation, and every line is operational guidance rather than concept re-explanation, matching the 'lean and efficient; every token earns its place' anchor.

It provides copy-paste-ready commands ('LIVE_MCP_URL=... pnpm exec tsx evals/runner/probe.ts --out score.json', 'NODE_ENV=development PORT=9876 ... pnpm dev:hono'), named analytics tools, exact allowlist file paths, and concrete thresholds (≤400 changed lines, stop after 3 open PRs), matching the 'fully executable code/commands; copy-paste ready' anchor.

A clearly sequenced six-step iteration (Measure→Pick→Fix→Validate→Ship→Journal) with an explicit validation checkpoint ('Keep the change only if the target metric improves and nothing else degrades'), a mandatory no-regression sample, and a 'Failure modes to expect' feedback section, matching the 'clear sequence with explicit validation steps; feedback loops' anchor.

The SKILL.md is a well-sectioned overview that offloads the detailed journal/PR-evidence format to a single clearly signaled, one-level-deep reference (references/campaign-journal.md, verified to exist), matching the 'clear overview with well-signaled one-level-deep references' anchor.

Names multiple concrete actions — 'measures the MCP agent experience with the eval harness', 'picks the highest-impact tool problem from production data', 'makes one bounded fix', and 'keeps it only if before/after scores improve' — matching the 'lists multiple specific concrete actions' anchor rather than the partial level-2 anchor.

It answers both 'what' (the autoresearch loop of measure→fix→re-score→keep) and 'when' via an explicit 'Use when…' trigger clause, matching the 'clearly answers both what AND when' anchor; it is not level 2, which would have what with when missing or only implied.

The explicit 'Use when asked to "improve my MCP", run an MCP improvement campaign, fix tool discoverability or descriptions based on evidence, or prepare an eval-backed PR' clause covers natural phrasings a user would actually say, satisfying the 'good coverage of natural terms' anchor rather than only 'some relevant keywords'.

It carves a clear niche — an eval-evidence-backed MCP tool-improvement campaign — with distinct triggers unlikely to fire for unrelated skills, matching the 'clear niche with distinct triggers' anchor; voice is third person, so no specificity penalty applies.