Rate limiting

Make coding agents write safer backend code

This MIT-licensed pack of three skills from GlobalMPC sets safer defaults for Claude Code, Codex and Cursor when they write backend code. The api-endpoint skill scopes every query to the calling user, turns bad input into 4xx errors and rate-limits login and costly routes. The data-integrity skill adds locks or conditional updates, unique constraints and idempotency keys on anything that charges or sends, and the db-migration skill uses expand-then-contract changes, concurrent indexes, lock timeouts, batched backfills and down migrations. Each skill has a section where you write in your team's own conventions. You get backend code from your agent that avoids common auth, double-charge and mid-deploy schema mistakes.