Conciseness

Lean and efficient: every line carries project-specific knowledge Claude cannot infer ("Cursor Cloud's startup setup installs locked pnpm dependencies", "ENABLE_AGGRESSIVE_OPT enables LTO and fast-math and defaults to OFF in CMake", "The generated header follows the commit boundary in AGENTS.md"). No padding or explanations of known concepts, matching the anchor-5 example.

Actionability

Fully executable, copy-paste ready commands covering the common cases: "pnpm run web-ui:build", "cmake -B build -DCMAKE_BUILD_TYPE=Release -DENABLE_AGGRESSIVE_OPT=ON", "./build/rtp2httpd -C -v -v -v -v -l 127.0.0.1:8080", and "curl --fail http://127.0.0.1:8080/status", with flags explained and "--help" pointed to for the rest.

Workflow Clarity

Clear build → run → verify sequence with explicit validation (the curl readiness check, plus the caveat that "a status response alone does not verify" playback) and error-recovery guidance ("If a port is occupied, choose another port rather than terminating an unrelated process"). Conditional build ordering (rebuild the frontend only when Web UI inputs changed) is also explicit.

Progressive Disclosure

The body is under 50 lines with no bundle files and no need for external reference files, and it is organized into well-labeled sections (Build, Run and configure, Verify). Per the rubric's simple-skill guidance this earns a 5; the pointers it does give (AGENTS.md, rtp2httpd.conf, docs/reference/configuration.md, docs/guide/url-formats.md, devlab, e2e skill) are one level deep and clearly signaled.

Specificity

Lists several concrete third-person actions ("Build, configure, and run rtp2httpd locally", "embedded Web UI builds", "build/runtime troubleshooting") tied to a named tool, with minor gaps such as not indicating what rtp2httpd is. It sits above anchor 3 (only 1-2 actions) but below anchor 5's comprehensive coverage.

Completeness

The "what" is clear (build, configure, run rtp2httpd locally with Web UI builds and troubleshooting), but there is no "Use when..." clause or equivalent explicit trigger guidance, which caps completeness at 3 per the judging guidelines. Not a 2 because the "what" is specific and it includes explicit scope boundaries.

Trigger Term Quality

Good natural-keyword coverage ("build", "configure", "run", "locally", "Web UI", "troubleshooting") that a user would plausibly say, but common variations like "compile", "start", or "debug" are missing. Better than anchor 3's partial coverage, short of anchor 5's synonym completeness.

Distinctiveness Conflict Risk

Naming the specific binary "rtp2httpd" plus explicit exclusions ("Excludes cross-compilation and deployment") gives it a clear niche with only minor overlap risk against sibling ops skills. Not a 5 because the anchor-5 example pairs the niche with distinct trigger phrases, which this description lacks.