Start signing in with a passkey

POST /v1/auth/passkeys/login/options

Returns the options for navigator.credentials.get(). No email or password: the chosen passkey names the account.

Responses

errors: application/problem+json

200

500

Internal Server Error

503

Service Unavailable

Match errors on the problem's code, which stays the same, not on its message.

Requestexample

curl -X POST "$API_URL/v1/auth/passkeys/login/options"

req, err := http.NewRequestWithContext(ctx, http.MethodPost,
	apiURL + "/v1/auth/passkeys/login/options", nil)
if err != nil {
	return err
}
res, err := http.DefaultClient.Do(req)
if err != nil {
	return err
}
defer res.Body.Close()

const res = await fetch(`${apiUrl}/v1/auth/passkeys/login/options`, {
  method: "POST",
});
const data = await res.json();

Responseexample

{
  "ceremony_token": "string",
  "expires_at": "2026-09-15T12:00:00Z",
  "options": null
}