CF4 Validation API
Integration Guide
Authentication, quotas & limits, endpoint reference, attachments, step-by-step, sample code, error reference, and FAQ.
Read the guide →OpenAPI 3.0 Spec
Machine-readable API definition. Generate a client SDK, import into Postman/Insomnia, or render interactive docs.
Download openapi.yaml →Client Examples
Dependency-free JavaScript and fully-typed TypeScript clients (quota, upload, submit, poll) you can copy into your project.
Browse examples →Browser Test Client
A zero-dependency browser app for manually exercising the API — quota, attachment upload, submit, and result polling.
Open test client →Product Privacy Policies
Need an API key? Contact your DocBen account manager. Keys are issued per client and are shown only once — store them securely and never commit them to source control.