Step 1 Get invite users payload (passkey)
Get the payload to sign in order to invite users to an existing account. Part of the passkey authentication flow.
Documentation Index
Fetch the complete documentation index at: https://docs.byzantine.fi/llms.txt
Use this file to discover all available pages before exploring further.
Authorizations
Headers
Integrator's ECDSA public key (P-256 curve, compressed SEC1 format). Example: 0x038fedef7c12f93bbf342ad8943b7a825a3b41f61c9dc118b2c718efebabbf62fd
Unix timestamp in seconds (UTC). Must be within tolerance window (1 minute) to prevent replay attacks. Example: 1760375826
ECDSA signature (DER-encoded, hex with 0x prefix). Signs the message: {timestamp}{METHOD}{path_and_query}{json_body}. Example: 0x3045022100...
Body
Body to invite new users to an existing account
Response
Payload to sign created successfully
The object that needs to be signed by the end user to invite a new user to a Byzantine account.

