Conciseness

The body is lean and assumes competence: it never explains what DNS or a CNAME record is, and packs each line with actionable specifics like 'flarectl dns create (note: wrangler itself doesn't manage DNS records)'. Every token earns its place, matching the 'lean and efficient' anchor; it is not lower because no padded or explanatory passages exist.

Actionability

Mostly executable guidance with copy-paste commands for five provider CLIs, read-only auth checks, and 'dig +short' verification — but step 4 says 'Attach the domain as a Convex custom domain (dashboard or CLI)' without the exact command, and record values are described as to-be-derived ('with concrete host/value strings, not placeholders'). Minor gaps keep it at anchor 4 rather than 5.

Workflow Clarity

Six clearly sequenced steps with explicit validation checkpoints: read-only auth check first, user confirmation before running, 'Verify records landed with dig +short', 'wait for verification', and a final HTTPS check including the apex→www redirect. Because this workflow touches a live domain, validation presence is decisive — it is fully covered, matching the 'clear sequence with explicit validation steps' anchor; not 4 because no checkpoint is missing.

Progressive Disclosure

The skill is under 50 lines, single-purpose, has no bundle files, and is cleanly organized into a Workflow section and a Rules section with no content that belongs in a separate file. Per the rubric's simple-skill note, well-organized sections alone warrant a 5 here.

Specificity

The description names the domain (Convex) and three concrete actions — 'DNS records, custom-domain attach, auth-origin rebind' — with only minor gaps in coverage (e.g., verification steps and target identification are not mentioned), matching the 'lists several specific actions' anchor rather than the narrower 1-2 action anchor.

Completeness

The 'what' is clear and concrete, but there is no 'Use when...' clause or equivalent explicit trigger guidance; the 'when' is only weakly implied by 'a domain you already own'. Per the judging guidelines, a missing 'Use when...' clause caps completeness at 3 — it is not 4 because 'when' guidance is entirely absent, and not 2 because the 'what' is fully explicit.

Trigger Term Quality

Natural phrases users would say are present — 'domain', 'DNS records', 'custom-domain', 'Convex app' — but common variations such as 'hostname', 'subdomain', 'apex', or 'URL' are missing, fitting the 'good keyword coverage; a few natural terms missing' anchor.

Distinctiveness Conflict Risk

The description occupies a clear niche (attaching an owned domain to a Convex app) with distinct triggers like 'auth-origin rebind', making it highly unlikely to fire for the wrong skill. It matches the 'clear niche with distinct triggers; minimal conflict risk' anchor.