Conciseness

The body is lean and operational (e.g., "Do not report success after a nonzero exit status"; "Run workspace commands from the intended project directory"), assuming Claude's competence throughout. The version-sensitive legacy note "Earlier versions installed global skills to ~/.gemini/antigravity/skills/..." sits outside any deprecated/old-patterns section, marking it as a trim candidate that keeps this at anchor 4 rather than 5.

Actionability

Every command is copy-paste executable — `npx @rmyndharis/antigravity-skills list`, `search flutter`, `install --bundle core-dev`, `doctor`, `installed`, `update flutter-expert`, plus a complete env-var example with `AG_SKILLS_DIR`. This fully matches anchor 5: executable commands covering the common cases with no gaps.

Workflow Clarity

A numbered instruction sequence is paired with explicit validation checkpoints ("Check the resolved destination with `doctor` and list existing skills before replacing them"; "Do not report success after a nonzero exit status") and error-recovery feedback loops ("Failed copies leave the previous installation intact... follow the reported recovery path and preserve any backup"; "Remove a stale installation lock only after verifying that no installer is running"). The destructive/batch cap does not apply because validation is present, so this matches anchor 5 rather than 4.

Progressive Disclosure

This is a single-file skill with no bundle files, cleanly sectioned (Use when / Do not use when / Instructions / Commands / Installation scope / Safety) with clearly signaled, one-level-deep external doc links. Nothing at this scale warrants splitting into separate files, matching anchor 5's easy navigation and appropriate placement; the minor length over the simple-skill threshold does not create organization gaps that would drop it to 4.

Specificity

"Searches, installs, updates, and lists skills from the Antigravity Skill Vault" names four concrete third-person actions that comprehensively cover the tool's operation set, matching the anchor-5 example's breadth. Not 4 because every supported operation (search, install, update, list) is explicitly named with no coverage gaps.

Completeness

Both parts are present: a clear "what" ("Searches, installs, updates, and lists skills...") and an explicit "when" ("Use when choosing or managing workspace or global skills through the npm CLI"). The when-clause is umbrella-shaped rather than listing concrete trigger phrases, fitting anchor 4 rather than 5; it is explicit, not merely implied, so it is above 3.

Trigger Term Quality

Natural terms like "skills", "install", "update", "search", and "workspace or global skills" give good coverage of what users would say, but common synonyms such as "add", "download", or "browse" are absent. Matches anchor 4 ("good keyword coverage; a few natural terms missing") rather than 5, which requires synonym-level comprehensiveness.

Distinctiveness Conflict Risk

"Antigravity Skill Vault" and "npm CLI" carve a clear niche with distinct tooling, but the trigger "managing workspace or global skills" could still overlap with a generic skill-manager skill. Mostly distinct with minor overlap risk against closely related skills, matching anchor 4 rather than the minimal-conflict bar of 5.