Individual skill
hunt-schema-enumeration
Enumerate hidden tables, fields, and endpoints via API error hints. Agnostic across PostgREST, Zod, FastAPI, GraphQL, and REST.
redteam/hunt-schema-enumeration/SKILL.md
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## When to Use
The target API returns structured error messages (JSON) that hint at valid table names, field names, or endpoint paths. This is the single most productive black-box recon technique for REST/GraphQL APIs — one fuzz request reveals the entire database schema.
Most common on: PostgREST (Supabase), FastAPI (.NET), Zod (Next.js/Node), tRPC, GraphQL, and any framework with validation error details enabled in production.
---
## Phase 1 — PostgREST Error Hint Enumeration
PostgREST is the REST API layer for Supabase/PostgreSQL. When you query a non-existent table, it returns a hint with the real table name.
```bash
SUPABASE_URL="https://PROJECT.supabase.co"