List Participant Signing URLs by Envelope ID

The List Participant Signing URLs by Envelope ID endpoint returns the URL and its expiry for each participant of an envelope, for every role. Signers receive a URL into the signing experience; CC participants receive a read-only view URL.

This endpoint is for senders who distribute the links themselves, so it requires the envelope to have notificationsManagedBy set to sender. When Nitro manages the notifications it has already emailed every participant their own link, and the request is rejected with a 409 response. Envelopes default to nitro when created without the field.

Note that a sender-managed envelope can only be sent for signing when every signer authenticates by SMS, so in practice this endpoint serves envelopes that meet that requirement too.

The envelope must also be in the SENT status; otherwise the request is rejected with a 409 response.