POST
/
user-authenticators
/
passkey
/
authentication-options
curl --request POST \
  --url https://api.authsignal.com/v1/client/user-authenticators/passkey/authentication-options \
  --header 'Content-Type: application/json' \
  --data '{
  "challengeId": "<string>",
  "username": "<string>"
}'
{
  "challengeId": "<string>",
  "options": {}
}

Body

application/json
​
challengeId
string

The ID of the challenge returned by Initiate Challenge. Only required if you want to customize the action code associated with the passkey sign-in.

​
username
string

If passed, will restrict the allowed credentials for the passkey sign-in to those associated with the given username. Recommended for when using passkeys for MFA or step-up authentication.

Response

200
application/json
OK
​
challengeId
string
required

The ID of the passkey challenge. Should be passed back to the complete the challenge.

​
options
object
required

The options for public key credential authentication, including rpId and challenge.