Workflow

Partner backend

1. Generate the PDF in your platform.
2. Get an access token.
3. Create contract (upload PDF) → contract_id.
4. Add parties (signers) → store returned sign_url values.
5. Send invitations (optional) or show sign_url to users.
6. Poll status via GET /contracts/{id}.
7. Once fully signed, download the final stamped PDF using signed_download.php?token=....

Recipient signing

Recipients sign via a tokenized URL:

https://firmato.eu/sign/public/sign.php?token=...

Final stamped download

https://firmato.eu/sign/public/signed_download.php?token=...

If the contract is not fully signed yet, the download endpoint may return HTTP 403.