Form-fill API Reference

The published specification is version 2026.10.17-1.

Fill FHIR R4 Questionnaires, or answer free-form questions, from clinical documents.

Jobs are asynchronous: submit with POST /v1/jobs, then poll GET /v1/jobs/{id} or receive the job.finished webhook, then fetch the result once with GET /v1/jobs/{id}/result. Nothing is kept beyond 24 hours. Authenticate with Authorization: Bearer <API key or OAuth access token>; keys need the formfill:process scope. Every error has the body {"error": {"code", "message", "request_id"}}.