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POST
/
challenge
Initiate Challenge
curl --request POST \
  --url https://api.authsignal.com/v1/client/challenge \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "action": "<string>"
}
'
{
  "challengeId": "<string>"
}

Documentation Index

Fetch the complete documentation index at: https://docs.authsignal.com/llms.txt

Use this file to discover all available pages before exploring further.

Authorizations

​
Authorization
string
header
required

Use a short-lived token obtained from the Server API's Track Action endpoint. The token is valid for 10 minutes and should be passed in the Authorization header as 'Bearer {token}'.

Body

application/json
​
action
string
required

The action code which will be associated with the passkey sign-in.

Response

OK

​
challengeId
string
required

The ID of the challenge. This value can be passed to Generate Authentication Options.