Setup your account
1

Create a Sign.Plus Account

Please sign up on the Sign.Plus Platform to get started.
2

Get Your API Key

Please visit the Integrations page to activate your API sandbox and get your API key.
3

Authentication & Authorization

Your API key must be included in all API requests and is required to initiate your first API call.
All POST, PUT, DELETE endpoints requires SIGN_ALL_EDIT permission and all GET endpoints requires SIGN_ALL_READ permission
Add document
curl --request POST \
  --url https://restapi.sign.plus/v2/envelope/{envelope_id}/document \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: multipart/form-data' \
  --form 'file=<string>'