Developer-first e-signatures. Upload a PDF, place fields, and LimeSign emails each signer a secure link to review and sign — with a tamper-evident Certificate of Completion.
# Create & send an envelope curl -X POST https://api.lime-sign.com/v1/envelopes \ -H "Authorization: Bearer lsk_test_…" \ -d '{ "title": "NDA", "documents": [{ "file_id": "file_01H…" }], "signers": [{ "name": "Ada Lovelace", "email": "ada@example.com" }] }'
Upload a PDF, drop signature, date, and text fields exactly where they belong, and add your signers.
LimeSign emails each signer a secure, single-use link (SMS optional). No account needed to sign.
They review and sign on any device. You get the sealed PDF and a tamper-evident Certificate of Completion.
Create and send an envelope in a single call. Clean REST, versioned, documented.
Signature, initials, date, and text — placed by anchor tags, coordinates, or drag-and-drop.
Hash-chained events and a human-readable Certificate of Completion for every envelope.
HMAC-signed, fixed-schema events with retries — know the moment an envelope completes.
Logo, colors, and sender name on the emails and the signing experience.
Encryption in transit and at rest, DKIM-signed email, and single-use signing links.