Conciseness

The body is efficient and assumes competence — no padding explaining what Postgres or extensions are — with each section earning its tokens. A few lines are trimmable filler (e.g., 'Two queries instead of one JOIN. The product data is fetched once. The reviews are fetched once. No duplication.'), which fits anchor 4 (efficient, minor over-explanation) rather than 5.

Actionability

Fully executable copy-paste SQL for all diagnostic queries and four of the five anti-patterns with before/after examples, plus concrete CLI commands (neon skills, npm i @neon/config, neon config apply). The 'High-frequency queries on static data' fix stops at 'Add a caching layer' with no code or mechanism, a minor gap that keeps this at anchor 4 rather than 5.

Workflow Clarity

A clearly ordered four-step workflow (diagnose, analyze, fix, verify) with explicit sequencing ('Work the four steps in order'), error-recovery feedback (the pg_stat_statements availability check and empty-stats handling), and a verify step that runs tests, checks response shape, and re-measures with a stats reset. This matches the top anchor with explicit validation steps and feedback loops for a database-operations context.

Progressive Disclosure

The skill ships as a single well-sectioned SKILL.md with no bundle files, and nothing in it clearly belongs in a separate file. References are well-signaled and one level deep: the parent neon skill (with install command and URL) and two Further Reading links. This matches the anchor for a clear overview with easy navigation.

Specificity

The description names the domain ('excessive Postgres egress (network data transfer)') and exactly two concrete actions ('Diagnose and fix'), matching the anchor for 1-2 concrete actions without comprehensive coverage. It does not reach 4 because the remaining text enumerates triggers rather than additional specific capabilities.

Completeness

It explicitly answers both what ('Diagnose and fix excessive Postgres egress (network data transfer) in a codebase') and when ('Use when a user mentions high database bills, unexpected data transfer costs...') with concrete trigger phrases, matching the top anchor exactly.

Trigger Term Quality

Comprehensive natural trigger coverage including synonyms and user-voiced phrases: 'high database bills', 'network transfer charges', 'egress spikes', 'why is my Neon bill so high', 'database costs jumped', 'SELECT * optimization', 'query overfetching', 'reduce Neon costs', 'optimize database usage'. This matches the anchor for full coverage of natural terms including variations.

Distinctiveness Conflict Risk

A clear niche (Postgres/Neon egress cost optimization) with distinct triggers, but the broadening clause 'Also use when reviewing query patterns for cost efficiency, even if the user doesn't explicitly mention egress or data transfer' creates minor overlap with generic database-optimization skills. Mostly distinct with minor overlap risk, matching anchor 4 rather than 5.