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Authrim

Activate TOTP signup.

POST
/api/auth/totp/signup/activate
Code sample: Shell / cURL 
curl --request POST \
  --url https://auth.example.com/api/auth/totp/signup/activate \
  --header 'Content-Type: application/json' \
  --data '{ "challenge_id": "2c2f1c47-9f40-4bc1-a5e3-a19f1cb1a44e", "code": "123456" }'

Verifies the first TOTP code, creates and activates the stored credential, generates backup codes, and creates a browser session.

Request Body required

Section titled “Request Body required ”
Media type application/json
object
challenge_id
required
string
code
required
string
/^(?:[0-9]{6}|[0-9]{8})$/
defer_authorization_continuation
boolean
key
additional properties
Example 
{
  "challenge_id": "2c2f1c47-9f40-4bc1-a5e3-a19f1cb1a44e",
  "code": "123456"
}

Responses

Section titled “ Responses ”

200

Section titled “200 ”

TOTP signup activation response.

Media type application/json
object
success
required
boolean
sessionId
required
string
expires_in
required
integer
session
required
object
userId
required
string
createdAt
required
integer format: int64
expiresAt
required
integer format: int64
authTime
required
integer format: int64
acr
required
string
amr
required
Array<string>
user
required
object
id
string
email
Any of:
string format: email
name
Any of:
string
email_verified
One of:
boolean
created_at
string
updated_at
string
last_login_at
Any of:
string
user_type
string
authorization
object
key
additional properties
redirect_url
required
string
ok
required
boolean
credential
required
object
id
required
string
label
required
string
algorithm
required
string
Allowed values: SHA1 SHA256 SHA512
digits
required
integer
Allowed values: 6 8
period
required
integer
window
required
integer
status
required
string
Allowed values: pending active disabled
created_at
required
integer format: int64
activated_at
integer | null format: int64
last_used_at
integer | null format: int64
backup_codes
required
Array<string>
Example 
{
  "session": {
    "acr": "urn:authrim:aal:2",
    "amr": [
      "otp",
      "totp"
    ]
  },
  "user": {
    "id": "user_123",
    "email": "[email protected]",
    "name": "Example User",
    "email_verified": true,
    "created_at": "2026-06-20T00:00:00.000Z",
    "updated_at": "2026-06-20T00:00:00.000Z",
    "last_login_at": "2026-06-20T00:00:00.000Z",
    "user_type": "anonymous"
  },
  "credential": {
    "algorithm": "SHA1",
    "digits": 6,
    "status": "pending"
  }
}

400

Section titled “400 ”

Error response.

Media type application/json
object
error
string
error_description
string
message
string
webauthn_signal

Optional browser-side WebAuthn Signal API hint. When unknown_credential is true, clients that just received a WebAuthn credential assertion may call PublicKeyCredential.signalUnknownCredential() for that credential ID.

object
unknown_credential
boolean
key
additional properties
Example generated
{
  "error": "example",
  "error_description": "example",
  "message": "example",
  "webauthn_signal": {
    "unknown_credential": true
  }
}