Documentation

Guides to get running, and a reference generated from the same contract the service enforces.

There are two APIs. Most integrations need only the first.

Signing API

Have a person sign PDFs from your own app, including a person who holds no certificate yet: their certificate is issued when they accept. One secret key, test and live modes, webhooks.

Guide	What it covers
Overview	How a signing request works, and the two keys.
Quick start	A document signed in test mode, in five calls.
Loan system guide	The server side of a loan signed in the bank’s app.
Banking app guide	Accept, Reject and the code, in Kotlin, Swift and Flutter.
API reference	Every operation and schema.

Certificates API

Manage the certificate lifecycle directly: enroll people, deliver credentials to their devices, suspend and revoke. It uses workload certificates and mutual TLS.

Guide	What it covers
Sandbox quick start	From sign-up to a first API call, without contacting anyone.
Orientation	What the platform does, and where your workflow fits.
Concepts	Subscribers, enrollments, certificates and signatures.
Credentials	Workload certificates, private_key_jwt and mutual TLS. No client secret.
Webhooks and events	What is delivered, how it is signed, and how retries work.
Errors	Every error code and what to do about it.

The certificates API reference lists every operation with its parameters, schemas and example requests. Import the same operations into Postman with the generated collection.