Conciseness

The body is lean and imperative throughout — checklists, exact env var names, and short directives like "If the code and the docs disagree, trust the code and say so" — with no teaching of concepts Claude already knows and no padded sections. Every line earns its place; this matches anchor 5.

Actionability

Guidance is fully concrete: copy-paste-ready commands ("openssl rand -hex 32"), exact env var names (`POSTGRES_URL`, `GITHUB_APP_PRIVATE_KEY`), exact callback URLs ("https://YOUR_DOMAIN/api/auth/vercel/callback"), and a numbered deploy sequence. Not below 5 because nothing is pseudocode or left abstract.

Workflow Clarity

The deployment flow is a clear numbered sequence (fork → import → baseline env vars → deploy → create OAuth app → redeploy → GitHub App → redeploy) with explicit first-run verification steps per scope and an error-recovery directive: "If something fails, identify the missing credential or callback mismatch instead of giving generic advice." This matches the anchor-5 pattern of sequence + explicit validation + failure feedback.

Progressive Disclosure

Sections are well-organized and navigable with no nested references, and there are no bundle files to misstructure. It falls at anchor 4 rather than 5 because the ~60-line per-credential walkthrough ("How to explain each credential") is inlined in a ~200-line file where a reference file could keep SKILL.md closer to an overview.

Specificity

The description lists three specific actions — "collecting the credentials needed to deploy their own copy of Open Harness, deploying this repo on Vercel, and completing first-run setup" — with the target platform named. It fits anchor 4 (several specific actions, minor gaps) rather than 5 because coverage stops short of the scoping decision (minimal vs. full deploy) and credential-by-credential guidance the skill actually provides.

Completeness

It clearly answers both: what ("Guides a user through collecting the credentials... deploying this repo on Vercel, and completing first-run setup") and when (an explicit "Use for requests about..." clause with concrete trigger phrases). This matches anchor 5 exactly.

Trigger Term Quality

"Use for requests about deploying, self-hosting, configuring credentials, or getting started with a fork of this app" gives good natural keyword coverage (deploying, self-hosting, credentials, fork, getting started). Not a 5 because common variations like "Vercel" as a trigger word, "host my own instance", or "set up my fork" are missing.

Distinctiveness Conflict Risk

The phrasing "deploy their own copy of Open Harness", "deploying this repo on Vercel", and "a fork of this app" pins the skill to a clear niche with distinct triggers, so conflict risk with generic deploy/setup skills is minimal — a clean anchor 5.