What problem does it solve? Supabase APIs, CLI commands, and security conventions change frequently, so relying on outdated knowledge leads to broken integrations, silent RLS failures, and security vulnerabilities. This Skill grounds every Supabase task in current documentation and enforces verification and security checklists. ## Core Features & Use Cases - Up-to-date guidance: Fetches the Supabase changelog and docs (via MCP search_docs or .md URLs) before implementing any feature, avoiding stale training-data answers. - Schema change workflow: Iterates on SQL with execute_sql or supabase db query, runs advisors, then commits clean migrations with supabase db pull. - Security checklist: Catches Supabase-specific traps like user_metadata in JWT authorization, views bypassing RLS, missing SELECT policies on UPDATE, and storage upsert permission gaps. - Use Case: When a user's Next.js app with @supabase/ssr has login sessions failing, the Skill checks current SSR docs, diagnoses cookie handling, applies the fix, and verifies it with a test query. ## Quick Start Use the supabase skill to fix my RLS policy so authenticated users can only read their own rows, then verify it works.