The content is lean and efficient, providing only essential information without explaining what Postgres or Supabase is. Every section serves a clear purpose with no padding or unnecessary context.

The skill provides no concrete SQL examples, executable code, or specific commands. It only describes what rule files contain and when to apply guidelines, but doesn't actually provide any actionable database optimization guidance itself.

There is no workflow or sequence of steps provided. The skill is purely a table of contents pointing to other files without explaining how to actually diagnose, optimize, or validate database performance improvements.

The skill appropriately references external rule files with clear organization by category and priority. However, it provides almost no substantive content in the main file itself—it's essentially just a pointer document with no quick-start guidance.

Names the domain (Postgres performance optimization) and mentions some actions (writing, reviewing, optimizing queries, schema designs, configurations), but doesn't list specific concrete actions like 'analyze query plans', 'add indexes', or 'tune connection pooling'.

Clearly answers both what (Postgres performance optimization and best practices from Supabase) and when (Use this skill when writing, reviewing, or optimizing Postgres queries, schema designs, or database configurations) with explicit trigger guidance.

Includes relevant keywords like 'Postgres', 'queries', 'schema designs', 'database configurations', but misses common variations users might say like 'SQL', 'slow queries', 'indexes', 'PostgreSQL', 'db performance', or 'query optimization'.

The Supabase and Postgres focus provides some distinction, but 'database configurations' and 'schema designs' could overlap with general database skills or other SQL-related skills. The Supabase attribution helps but isn't a strong differentiator for triggering.