Folio is temporarily offline The API is paused while it moves to new infrastructure. New sign-ups are closed and existing keys will not authenticate until it returns.

U.S. Public Record API Operated by Folio Insights LLC

Folio API Reference

The rendered reference requires JavaScript. The raw OpenAPI specification is still available:

/openapi.yaml — public REST API specification (OpenAPI 3.0.3)
/docs — quickstart, authentication, pagination, rate limits