API documentation and technical reference

Deterministic REST API to generate and validate fake test data (Spanish DNI/NIE/CIF, IBAN, cards, phone numbers, identities…) from tests, database seeds and CI/CD pipelines.

Where to start

• Quickstart
  Your first request in under a minute.
• Authentication
  Anonymous API, no credentials; optional seed.
• Rate limits
  60 requests per minute per IP.
• API reference
  Endpoints, parameters and a sample response generated live.

Base URL

Every route lives under https://datamockseed.firstflip.es/api/v1. The full OpenAPI spec is at /api/v1/openapi.json?lang=en. Human-readable messages are in Spanish by default: add ?lang=en to get them in English.