curl --request POST \
  --url https://api.turnkey.com/public/v1/submit/init_otp_auth \
  --header 'Accept: application/json' \
  --header 'Content-Type: application/json' \
  --header "X-Stamp: <string> (see Authorizations)" \
  --data '{
    "type": "ACTIVITY_TYPE_INIT_OTP_AUTH_V3",
    "timestampMs": "<string> (e.g. 1746736509954)",
    "organizationId": "<string> (Your Organization ID)",
    "parameters": {
        "otpType": "<string>",
        "contact": "<string>",
        "otpLength": "<number>",
        "appName": "<string>",
        "emailCustomization": {
            "logoUrl": "<string>",
            "magicLinkTemplate": "<string>",
            "templateVariables": "<string>",
            "templateId": "<string>"
        },
        "smsCustomization": {
            "template": "<string>"
        },
        "userIdentifier": "<string>",
        "sendFromEmailAddress": "<string>",
        "alphanumeric": "<boolean>",
        "sendFromEmailSenderName": "<string>",
        "expirationSeconds": "<string>",
        "replyToEmailAddress": "<string>"
    }
}'

import { Turnkey } from "@turnkey/sdk-server";

const turnkeyClient = new Turnkey({
  apiBaseUrl: "https://api.turnkey.com",
  apiPublicKey: process.env.API_PUBLIC_KEY!,
  apiPrivateKey: process.env.API_PRIVATE_KEY!,
  defaultOrganizationId: process.env.ORGANIZATION_ID!,
});

const response = await turnkeyClient.apiClient().initOtpAuth({
  otpType: "<string> (Whether to send OTP via SMS, email, or WhatsApp. Possible values: OTP_TYPE_SMS, OTP_TYPE_EMAIL, OTP_TYPE_WHATSAPP)",
  contact: "<string> (Email or phone number to send the OTP code to)",
  otpLength: 0 // Optional length of the OTP code. Default = 9,
  appName: "<string> (The name of the application. This field is required and will be used in email notifications if an email template is not provided.)",
  emailCustomization: { // emailCustomization field,
    logoUrl: "<string> (A URL pointing to a logo in PNG format. Note this logo will be resized to fit into 340px x 124px.)",
    magicLinkTemplate: "<string> (A template for the URL to be used in a magic link button, e.g. `https://dapp.xyz/%s`. The auth bundle will be interpolated into the `%s`.)",
    templateVariables: "<string> (JSON object containing key/value pairs to be used with custom templates.)",
    templateId: "<string> (Unique identifier for a given Email Template. If not specified, the default is the most recent Email Template.)",
  },
  smsCustomization: { // smsCustomization field,
    template: "<string> (Template containing references to .OtpCode i.e Your OTP is {{.OtpCode}})",
  },
  userIdentifier: "<string> (Optional client-generated user identifier to enable per-user rate limiting for SMS auth. We recommend using a hash of the client-side IP address.)",
  sendFromEmailAddress: "<string> (Optional custom email address from which to send the OTP email)",
  alphanumeric: true // Optional flag to specify if the OTP code should be alphanumeric (Crockford’s Base32). Default = true,
  sendFromEmailSenderName: "<string> (Optional custom sender name for use with sendFromEmailAddress; if left empty, will default to 'Notifications')",
  expirationSeconds: "<string> (Expiration window (in seconds) indicating how long the OTP is valid for. If not provided, a default of 5 minutes will be used. Maximum value is 600 seconds (10 minutes))",
  replyToEmailAddress: "<string> (Optional custom email address to use as reply-to)"
});

{
  "activity": {
    "id": "<activity-id>",
    "status": "ACTIVITY_STATUS_COMPLETED",
    "type": "ACTIVITY_TYPE_INIT_OTP_AUTH_V3",
    "organizationId": "<organization-id>",
    "timestampMs": "<timestamp> (e.g. 1746736509954)",
    "result": {
      "activity": {
        "id": "<string>",
        "organizationId": "<string>",
        "status": "<string>",
        "type": "<string>",
        "intent": {
          "initOtpAuthIntentV3": {
            "otpType": "<string>",
            "contact": "<string>",
            "otpLength": "<number>",
            "appName": "<string>",
            "emailCustomization": {
              "logoUrl": "<string>",
              "magicLinkTemplate": "<string>",
              "templateVariables": "<string>",
              "templateId": "<string>"
            },
            "smsCustomization": {
              "template": "<string>"
            },
            "userIdentifier": "<string>",
            "sendFromEmailAddress": "<string>",
            "alphanumeric": "<boolean>",
            "sendFromEmailSenderName": "<string>",
            "expirationSeconds": "<string>",
            "replyToEmailAddress": "<string>"
          }
        },
        "result": {
          "initOtpAuthResultV2": {
            "otpId": "<string>"
          }
        },
        "votes": "<array>",
        "fingerprint": "<string>",
        "canApprove": "<boolean>",
        "canReject": "<boolean>",
        "createdAt": "<string>",
        "updatedAt": "<string>"
      }
    }
  }
}