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Supabase Postgres Best Practices

fcakyon/supabase-postgres-best-practices

Postgres best practices maintained by Supabase, for Postgres running anywhere. Load this skill BEFORE writing or changing anything that lives in a Postgres database: creating or altering tables and columns (including choosing column types), schema design, migrations and declarative schema files, RLS policies and the tests that verify them, indexes, triggers, database functions, queues and scheduled jobs (pg_cron, pgmq), vector/semantic search (pgvector), and restoring dumps (pg_restore) or importing data. Also load it when diagnosing slow queries, high CPU, timeouts, EXPLAIN plans, connection exhaustion, locking, bloat, or rows visible to the wrong user or tenant. This is not just a performance guide — schema, migration, security, and SQL authoring tasks need these rules too, even for a one-column change or a single query.

This is a copy. The original lives at supabase/supabase-postgres-best-practices.

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Install

one command, takes just this skill from the repository 
npx skills add https://github.com/fcakyon/claude-codex-settings --skill supabase-postgres-best-practices

The instruction itself

5 sections, as written by the author

Supabase Postgres Best Practices

Comprehensive performance optimization guide for Postgres, maintained by Supabase. Contains rules across 8 categories, prioritized by impact to guide automated query optimization and schema design.

When to Apply

Reference these guidelines when:

  • Writing SQL queries or designing schemas
  • Implementing indexes or query optimization
  • Reviewing database performance issues
  • Configuring connection pooling or scaling
  • Optimizing for Postgres-specific features
  • Working with Row-Level Security (RLS)

Rule Categories by Priority

| Priority | Category | Impact | Prefix |

|----------|----------|--------|--------|

| 1 | Query Performance | CRITICAL | query- |

| 2 | Connection Management | CRITICAL | conn- |

| 3 | Security & RLS | CRITICAL | security- |

| 4 | Schema Design | HIGH | schema- |

| 5 | Concurrency & Locking | MEDIUM-HIGH | lock- |

| 6 | Data Access Patterns | MEDIUM | data- |

| 7 | Monitoring & Diagnostics | LOW-MEDIUM | monitor- |

| 8 | Advanced Features | LOW | advanced- |

How to Use

Read individual rule files for detailed explanations and SQL examples:

references/query-missing-indexes.md
references/query-partial-indexes.md
references/_sections.md

Each rule file contains:

  • Brief explanation of why it matters
  • Incorrect SQL example with explanation
  • Correct SQL example with explanation
  • Optional EXPLAIN output or metrics
  • Additional context and references
  • Supabase-specific notes (when applicable)

References

  • https://www.postgresql.org/docs/current/
  • https://supabase.com/docs
  • https://wiki.postgresql.org/wiki/Performance_Optimization
  • https://supabase.com/docs/guides/database/overview
  • https://supabase.com/docs/guides/auth/row-level-security

Repackaged in 1 other repositories

same content, different owner
supabase/agent-skills open on GitHub →

How to use it

Copy the folder

Take fcakyon/supabase-postgres-best-practices from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

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