What is GetSigned?
GetSigned is an API-first e-signature service. You send us a PDF and a list of signers — we handle the signing links, identity verification, and return you a cryptographically sealed PDF with a full audit trail. Every completed document includes:- SHA-256 hash of the original and final PDF (tamper-detectable)
- PKCS#7 digital seal — any byte change is detectable in Adobe Acrobat
- RFC 3161 trusted timestamp — proves the seal time even after certificate rotation
- Hash-chained audit log — append-only, detectable even with direct database access
- Full audit certificate page appended to the sealed PDF
Who is it for?
GetSigned is built for developers integrating e-signatures into their own products — not for end-users who want to sign documents manually. If you want a consumer signing app, use DocuSign. If you want to build one, use GetSigned. Typical use cases:- SaaS platforms — add signing to your existing product flow
- Healthcare — patient consent forms, intake documents
- Legal tech — engagement letters, NDAs
- Real estate — lease agreements, offers
How it works
Create an envelope
Upload a PDF, define fields (signature, date, text), and specify signers with routing order.
Signers sign
Each signer opens their link, verifies identity via OTP, consents to e-signature, and completes
their fields.
Base URL
/v1/.
Next steps
Quickstart
First sealed PDF in under 5 minutes
Authentication
Get your API credentials and mint a token
Envelopes
Understand the envelope lifecycle
Webhooks
React to signing events in real time