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POST
/
v1
/
b2b
/
otps
/
sms
/
send
C#
// POST /v1/b2b/otps/sms/send
const stytch = require('stytch');

const client = new stytch.B2BClient({
  project_id: '${projectId}',
  secret: '${secret}',
});

const params = {
  organization_id: "${organizationId}",
  member_id: "${memberId}",
};

client.OTPs.Sms.Send(params)
  .then(resp => { console.log(resp) })
  .catch(err => { console.log(err) });
{
  "request_id": "<string>",
  "member_id": "<string>",
  "member": {
    "organization_id": "<string>",
    "member_id": "<string>",
    "email_address": "<string>",
    "status": "<string>",
    "name": "<string>",
    "sso_registrations": [
      {
        "connection_id": "<string>",
        "external_id": "<string>",
        "registration_id": "<string>",
        "sso_attributes": {}
      }
    ],
    "is_breakglass": true,
    "member_password_id": "<string>",
    "oauth_registrations": [
      {
        "provider_type": "<string>",
        "provider_subject": "<string>",
        "member_oauth_registration_id": "<string>",
        "profile_picture_url": "<string>",
        "locale": "<string>"
      }
    ],
    "email_address_verified": true,
    "mfa_phone_number_verified": true,
    "is_admin": true,
    "totp_registration_id": "<string>",
    "retired_email_addresses": [
      {
        "email_id": "<string>",
        "email_address": "<string>"
      }
    ],
    "is_locked": true,
    "mfa_enrolled": true,
    "mfa_phone_number": "<string>",
    "default_mfa_method": "<string>",
    "roles": [
      {
        "role_id": "<string>",
        "sources": [
          {
            "type": "<string>",
            "details": {}
          }
        ]
      }
    ],
    "trusted_metadata": {},
    "untrusted_metadata": {},
    "created_at": "<string>",
    "updated_at": "<string>",
    "scim_registration": {
      "connection_id": "<string>",
      "registration_id": "<string>",
      "external_id": "<string>",
      "scim_attributes": {
        "user_name": "<string>",
        "id": "<string>",
        "external_id": "<string>",
        "active": true,
        "groups": [
          {
            "value": "<string>",
            "display": "<string>"
          }
        ],
        "display_name": "<string>",
        "nick_name": "<string>",
        "profile_url": "<string>",
        "user_type": "<string>",
        "title": "<string>",
        "preferred_language": "<string>",
        "locale": "<string>",
        "timezone": "<string>",
        "emails": [
          {
            "value": "<string>",
            "type": "<string>",
            "primary": true
          }
        ],
        "phone_numbers": [
          {
            "value": "<string>",
            "type": "<string>",
            "primary": true
          }
        ],
        "addresses": [
          {
            "formatted": "<string>",
            "street_address": "<string>",
            "locality": "<string>",
            "region": "<string>",
            "postal_code": "<string>",
            "country": "<string>",
            "type": "<string>",
            "primary": true
          }
        ],
        "ims": [
          {
            "value": "<string>",
            "type": "<string>",
            "primary": true
          }
        ],
        "photos": [
          {
            "value": "<string>",
            "type": "<string>",
            "primary": true
          }
        ],
        "entitlements": [
          {
            "value": "<string>",
            "type": "<string>",
            "primary": true
          }
        ],
        "roles": [
          {
            "value": "<string>",
            "type": "<string>",
            "primary": true
          }
        ],
        "x509certificates": [
          {
            "value": "<string>",
            "type": "<string>",
            "primary": true
          }
        ],
        "name": {
          "formatted": "<string>",
          "family_name": "<string>",
          "given_name": "<string>",
          "middle_name": "<string>",
          "honorific_prefix": "<string>",
          "honorific_suffix": "<string>"
        },
        "enterprise_extension": {
          "employee_number": "<string>",
          "cost_center": "<string>",
          "division": "<string>",
          "department": "<string>",
          "organization": "<string>",
          "manager": {
            "value": "<string>",
            "ref": "<string>",
            "display_name": "<string>"
          }
        }
      }
    },
    "external_id": "<string>",
    "lock_created_at": "<string>",
    "lock_expires_at": "<string>"
  },
  "organization": {
    "organization_id": "<string>",
    "organization_name": "<string>",
    "organization_logo_url": "<string>",
    "organization_slug": "<string>",
    "sso_jit_provisioning": "<string>",
    "sso_jit_provisioning_allowed_connections": [
      "<string>"
    ],
    "sso_active_connections": [
      {
        "connection_id": "<string>",
        "display_name": "<string>",
        "identity_provider": "<string>"
      }
    ],
    "email_allowed_domains": [
      "<string>"
    ],
    "email_jit_provisioning": "<string>",
    "email_invites": "<string>",
    "auth_methods": "<string>",
    "allowed_auth_methods": [
      "<string>"
    ],
    "mfa_policy": "<string>",
    "rbac_email_implicit_role_assignments": [
      {
        "domain": "<string>",
        "role_id": "<string>"
      }
    ],
    "mfa_methods": "<string>",
    "allowed_mfa_methods": [
      "<string>"
    ],
    "oauth_tenant_jit_provisioning": "<string>",
    "claimed_email_domains": [
      "<string>"
    ],
    "first_party_connected_apps_allowed_type": "<string>",
    "allowed_first_party_connected_apps": [
      "<string>"
    ],
    "third_party_connected_apps_allowed_type": "<string>",
    "allowed_third_party_connected_apps": [
      "<string>"
    ],
    "custom_roles": [
      {
        "role_id": "<string>",
        "description": "<string>",
        "permissions": [
          {
            "resource_id": "<string>",
            "actions": [
              "<string>"
            ]
          }
        ]
      }
    ],
    "trusted_metadata": {},
    "created_at": "<string>",
    "updated_at": "<string>",
    "organization_external_id": "<string>",
    "sso_default_connection_id": "<string>",
    "scim_active_connection": {
      "connection_id": "<string>",
      "display_name": "<string>",
      "bearer_token_last_four": "<string>",
      "bearer_token_expires_at": "<string>"
    },
    "allowed_oauth_tenants": {}
  },
  "status_code": 123
}
If the already has a phone number, the mfa_phone_number field is not needed; the endpoint will send an OTP to the number associated with the Member. If the Member does not have a phone number, mfa_phone_number is required — the provided phone number will be used to send the OTP and will be linked with the Member. An error will be thrown if the Member already has a phone number and the provided mfa_phone_number does not match the existing one. OTP codes expire after two minutes. Sending another OTP code before the first has expired will invalidate the first code. If a Member has a phone number and is enrolled in MFA, then after a successful primary authentication event (e.g. email magic link or SSO login is complete), an SMS OTP will automatically be sent to their phone number. In that case, this endpoint should only be used for subsequent authentication events, such as prompting a Member for an OTP again after a period of inactivity. If the Member already has an active MFA factor, then passing an intermediate session token, session token, or session JWT with the existing MFA factor on it is required to prevent bypassing MFA. Otherwise, passing an intermediate session token, session token, or session JWT is not required, but if passed must match the member_id passed.

​
Cost to send SMS OTP

Before configuring SMS or WhatsApp OTPs, please be aware that Stytch bills at different rates for international OTPs and understand how to protect your app against toll fraud. Even when international SMS is enabled, we do not support sending SMS to countries on our Unsupported countries list. Note: SMS to phone numbers outside of the US and Canada is disabled by default for customers who did not use SMS prior to October 2023. If you’re interested in sending international SMS, please add those countries to your Project’s allowlist via the Dashboard or Programmatic Workspace Actions, and add credit card details to your account.

Authorizations

​
Authorization
string
header
required

Basic authentication header of the form Basic <encoded-value>, where <encoded-value> is the base64-encoded string username:password.

Body

application/json

Request type

​
organization_id
string
required

Globally unique UUID that identifies a specific Organization. The organization_id is critical to perform operations on an Organization, so be sure to preserve this value. You may also use the organization_slug or organization_external_id here as a convenience.

​
member_id
string
required

Globally unique UUID that identifies a specific Member. The member_id is critical to perform operations on a Member, so be sure to preserve this value. You may use an external_id here if one is set for the member.

​
mfa_phone_number
string

The phone number to send the OTP to. If the Member already has a phone number, this argument is not needed.

​
locale
enum<string>

Used to determine which language to use when sending the user this delivery method. Parameter is an IETF BCP 47 language tag, e.g. "en".

Currently supported languages are English ("en"), Spanish ("es"), French ("fr") and Brazilian Portuguese ("pt-br"); if no value is provided, the copy defaults to English.

Request support for additional languages here!

Available options:
en,
es,
pt-br,
fr
​
intermediate_session_token
string

The Intermediate Session Token. This token does not necessarily belong to a specific instance of a Member, but represents a bag of factors that may be converted to a member session. The token can be used with the OTP SMS Authenticate endpoint, TOTP Authenticate endpoint, or Recovery Codes Recover endpoint to complete an MFA flow and log in to the Organization. The token has a default expiry of 10 minutes. It can also be used with the Exchange Intermediate Session endpoint to join a specific Organization that allows the factors represented by the intermediate session token; or the Create Organization via Discovery endpoint to create a new Organization and Member. Intermediate Session Tokens have a default expiry of 10 minutes.

​
session_token
string

A secret token for a given Stytch Session.

​
session_jwt
string

The JSON Web Token (JWT) for a given Stytch Session.

Response

Successful response

​
request_id
string
required

Globally unique UUID that is returned with every API call. This value is important to log for debugging purposes; we may ask for this value to help identify a specific API call when helping you debug an issue.

​
member_id
string
required

Globally unique UUID that identifies a specific Member.

​
member
object
required
​
organization
object
required
​
status_code
integer<int32>
required

The HTTP status code of the response. Stytch follows standard HTTP response status code patterns, e.g. 2XX values equate to success, 3XX values are redirects, 4XX are client errors, and 5XX are server errors.