{
"authentication":[
  {
    "type":"custom",
    "provider":"SuperApp",
    "data":{
      "Session ID":"se_88620999344",
      "Authenticated At":"Dec 31, 2025 23:59:59"
    }
  }
],
"embeddable_in":[
  "https://app.example.com"
],
"url_variant": "standard",
"url":"https://sign.signatureapi.com/en/start?token=eyJhbGciOiJFUzI1NiIsInR..."
}
A ceremony is a session where a recipient interacts with an envelope, such as by signing it. By default, a ceremony is created for each recipient with email_link authentication. To take manual control, provide a ceremony object when creating the recipient to specify authentication and other options, or create additional ceremonies later using the Create Ceremony endpoint. A ceremony belongs to a recipient.

​
Attributes

​
authentication
array of authentication object
​
redirect_url
string
A URL to redirect the recipient to after a ceremony is finished.Learn more in Redirect URL.
​
url_variant
enum
The type of ceremony URL returned for sharing flexibility.Available options are short and standard. The default is standard.Use short when you need to share the URL in space-constrained channels such as SMS or push notifications.
​
embeddable_in
array of strings
List of sources allowed to embed this ceremony (for web embedding).These sources will be used in the frame-ancestor directive of the ceremony’s HTTP Content Security Policy (CSP).Sources usually take the form of a scheme and host, like https://app.example.com, but can also use wildcards, like https://*.example.com. For all available options, refer to the frame‑ancestors documentation.Defaults to an empty list ([]), meaning the ceremony cannot be embedded unless you explicitly allow at least one origin. To allow embedding in all origins (not recommended for production), use ["*"].
To ensure compatibility, only the origin (scheme and host) is considered; paths are ignored.
​
url
string
The URL where recipients can access and complete the signing ceremony. This can be embedded in a web or mobile app, or shared by other means.This property will be null in the following cases:
  • The recipient is expected to access the ceremony via an internal delivery method (for example, authentication via email_link).
  • The ceremony is not currently active (for example, it has been completed, revoked, or declined).
{
"authentication":[
  {
    "type":"custom",
    "provider":"SuperApp",
    "data":{
      "Session ID":"se_88620999344",
      "Authenticated At":"Dec 31, 2025 23:59:59"
    }
  }
],
"embeddable_in":[
  "https://app.example.com"
],
"url_variant": "standard",
"url":"https://sign.signatureapi.com/en/start?token=eyJhbGciOiJFUzI1NiIsInR..."
}