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Complete a passkey step-up

POST/v1/auth/mfa/step-up/webauthn/verify

Completes a passkey step-up by verifying the assertion response against the nonce in transit_token and the stored credential, issuing the same step_up_token the code step-up does. Responds 401 when the transit token or assertion is wrong. Rate-limited to 10 requests per minute.

Authentication

Bearer TokenAuthorization

JWT access token. Never send alongside X-API-Key: a request carrying both is refused.

Request body

application/json

transit_tokenstring Required

Sealed transit_token from /mfa/step-up/webauthn/options. Carries the WebAuthn challenge nonce server-side.

responseobject Required

The PublicKeyCredential JSON returned by `navigator.credentials.get()`.

Responses

application/json

  • dataMfaStepUpResponseDto*

application/json

  • errorApiErrorBodyDto*

application/json

  • errorApiErrorBodyDto*

application/json

  • errorApiErrorBodyDto*

application/json

  • errorApiErrorBodyDto*

application/json

  • errorApiErrorBodyDto*

Rate limit

10 requests per 1mPer caller: the signed-in user for a bearer token; for an API key, the key and the end user's address when a backend forwards it, otherwise the client address

Returned object

MfaStepUpResponseDtoView all properties on this resource
Request
curl -X POST "https://auth.canopy-io.com/v1/auth/mfa/step-up/webauthn/verify" \
  -H "Authorization: Bearer $CANOPY_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "transit_token": "string",
    "response": {}
  }'
Response
{
  "data": {
    "step_up_token": "string",
    "expires_at": "2026-04-20T12:00:00.000Z"
  }
}
 Related endpoints
GETList the caller's enrolled second factors
POSTBegin authenticator app enrollment
POSTComplete authenticator app enrollment
POSTBegin passkey enrollment
POSTComplete passkey enrollment
POSTProve a fresh second factor before a sensitive change
POSTBegin a passkey step-up
DELETERemove one of the caller's second factors
GETHow many recovery codes the caller has left
POSTRegenerate the caller's recovery codes
GETList the caller's remembered devices
DELETEForget every remembered device
DELETEForget one remembered device
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