Skip to main content
Callbacks are optional functions that allow you to take actions in your app or send logs to your backend based on where your user is in the authentication flow.

​
onEvent

A function that is called when the Stytch client makes a request. The function expects an argument of an event object, and the event object has type and data objects. 
// The AUTHENTICATE_FLOW_COMPLETE event indicates that the user has finished
// the authentication flow, regardless of the authentication product they selected.
// It is returned in addition to product-specific events.
{
  "type": "AUTHENTICATE_FLOW_COMPLETE",
  "data": {}
},
{
  "type": "B2B_ORGANIZATIONS_GET_BY_SLUG",
  "data": {
    "organization": { ...Stytch organization... },
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
},
{
  "type": "B2B_DISCOVERY_ORGANIZATIONS_CREATE",
  "data": {
    "member_id": "member-test-32fc5024-9c09-4da3-bd2e-c9ce4da9375f",
    "member": { ...Stytch member... },
    "organization": { ...Stytch organization... },
    "session_token": "mZAYn5aLEqKUlZ_Ad9U_fWr38GaAQ1oFAhT8ds245v7Q",
    "session_jwt": "example_jwt",
    "member_session": { ...Stytch member session... },
    "member_authenticated": true,
    "intermediate_session_token": "",
    "mfa_required": null,
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
},
{
  "type": "B2B_DISCOVERY_INTERMEDIATE_SESSION_EXCHANGE",
  "data": {
    "member_id": "member-test-32fc5024-9c09-4da3-bd2e-c9ce4da9375f",
    "member": { ...Stytch member... },
    "organization": { ...Stytch organization... },
    "session_token": "mZAYn5aLEqKUlZ_Ad9U_fWr38GaAQ1oFAhT8ds245v7Q",
    "session_jwt": "example_jwt",
    "member_session": { ...Stytch member session... },
    "member_authenticated": true,
    "intermediate_session_token": "",
    "mfa_required": null,
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
},
{
  "type": "B2B_IMPERSONATION_AUTHENTICATE",
  "data": {
    "member_id": "member-test-32fc5024-9c09-4da3-bd2e-c9ce4da9375f",
    "member": { ...Stytch member... },
    "organization_id": "organization-test-07971b06-ac8b-4cdb-9c15-63b17e653931",
    "organization": { ...Stytch organization... },
    "session_token": "mZAYn5aLEqKUlZ_Ad9U_fWr38GaAQ1oFAhT8ds245v7Q",
    "session_jwt": "example_jwt",
    "intermediate_session_token": "",
    "member_session": { ...Stytch member session... },
    "member_authenticated": true,
    "mfa_required": null,
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
}

{
  "type": "B2B_MAGIC_LINK_EMAIL_LOGIN_OR_SIGNUP",
  "data": {
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
},
{
  "type": "B2B_MAGIC_LINK_AUTHENTICATE",
  "data": {
    "method_id": "member-email-test-1dd089b3-8904-47ef-b943-987968e549d4",
    "member_id": "member-test-32fc5024-9c09-4da3-bd2e-c9ce4da9375f",
    "member": { ...Stytch member... },
    "organization": { ...Stytch organization... },
    "session_token": "mZAYn5aLEqKUlZ_Ad9U_fWr38GaAQ1oFAhT8ds245v7Q",
    "session_jwt": "example_jwt",
    "member_session": { ...Stytch member session... },
    "member_authenticated": true,
    "intermediate_session_token": "",
    "mfa_required": null,
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
},
{
  "type": "B2B_MAGIC_LINK_EMAIL_DISCOVERY_SEND",
  "data": {
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
},
{
  "type": "B2B_MAGIC_LINK_DISCOVERY_AUTHENTICATE",
  "data": {
    "email_address": "sandbox@stytch.com",
    "intermediate_session_token": "SeiGwdj5lKkrEVgcEY3QNJXt6srxS3IK2Nwkar6mXD4=",
    "discovered_organizations": [{ ...Discovered Organization object... }, ...],
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
}

​
Email OTP

{
  "type": "B2B_OTPS_EMAIL_LOGIN_OR_SIGNUP",
  "data": {
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
},
{
  "type": "B2B_OTPS_EMAIL_AUTHENTICATE",
  "data": {
    "method_id": "member-email-test-1dd089b3-8904-47ef-b943-987968e549d4",
    "member_id": "member-test-32fc5024-9c09-4da3-bd2e-c9ce4da9375f",
    "member": { ...Stytch member... },
    "organization": { ...Stytch organization... },
    "organization_id": "organization-test-07971b06-ac8b-4cdb-9c15-63b17e653931",
    "session_token": "mZAYn5aLEqKUlZ_Ad9U_fWr38GaAQ1oFAhT8ds245v7Q",
    "session_jwt": "example_jwt",
    "member_session": { ...Stytch member session... },
    "member_authenticated": true,
    "intermediate_session_token": "",
    "mfa_required": null,
    "primary_required": null,
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
},
{
  "type": "B2B_OTPS_EMAIL_DISCOVERY_SEND",
  "data": {
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
},
{
  "type": "B2B_OTPS_EMAIL_DISCOVERY_AUTHENTICATE",
  "data": {
    "email_address": "sandbox@stytch.com",
    "intermediate_session_token": "SeiGwdj5lKkrEVgcEY3QNJXt6srxS3IK2Nwkar6mXD4=",
    "discovered_organizations": [{ ...Discovered Organization object... }, ...],
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
}

​
OAuth

{
  "type": "B2B_OAUTH_AUTHENTICATE",
  "data": {
    "provider_subject": "123456789123456789123",
    "provider_type": "Google",
    "provider_values": { ...OAuth provider values... },
    "method_id": "member-email-test-1dd089b3-8904-47ef-b943-987968e549d4",
    "member_id": "member-test-32fc5024-9c09-4da3-bd2e-c9ce4da9375f",
    "member": { ...Stytch member... },
    "organization": { ...Stytch organization... },
    "organization_id": "organization-test-07971b06-ac8b-4cdb-9c15-63b17e653931",
    "session_token": "mZAYn5aLEqKUlZ_Ad9U_fWr38GaAQ1oFAhT8ds245v7Q",
    "session_jwt": "example_jwt",
    "member_session": { ...Stytch member session... },
    "member_authenticated": true,
    "intermediate_session_token": "",
    "mfa_required": null,
    "primary_required": null,
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
},
{
  "type": "B2B_OAUTH_DISCOVERY_AUTHENTICATE",
  "data": {
    "email_address": "sandbox@stytch.com",
    "full_name": "Jane Doe",
    "provider_tenant_id": "",
    "provider_type": "Google",
    "intermediate_session_token": "SeiGwdj5lKkrEVgcEY3QNJXt6srxS3IK2Nwkar6mXD4=",
    "discovered_organizations": [{ ...Discovered Organization object... }, ...],
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
}

​
Passwords

{
  "type": "B2B_PASSWORD_AUTHENTICATE",
  "data": {
    "member_id": "member-test-32fc5024-9c09-4da3-bd2e-c9ce4da9375f",
    "member": { ...Stytch member... },
    "organization": { ...Stytch organization... },
    "session_token": "mZAYn5aLEqKUlZ_Ad9U_fWr38GaAQ1oFAhT8ds245v7Q",
    "session_jwt": "example_jwt",
    "member_session": { ...Stytch member session... },
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
},
{
  "type": "B2B_PASSWORD_RESET_BY_EMAIL_START",
  "data": {
    "member_id": "member-test-32fc5024-9c09-4da3-bd2e-c9ce4da9375f",
    "member": { ...Stytch member... },
    "organization": { ...Stytch organization... },
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
},
{
  "type": "B2B_PASSWORD_RESET_BY_EMAIL",
  "data": {
    "member_id": "member-test-32fc5024-9c09-4da3-bd2e-c9ce4da9375f",
    "member": { ...Stytch member... },
    "organization": { ...Stytch organization... },
    "session_token": "mZAYn5aLEqKUlZ_Ad9U_fWr38GaAQ1oFAhT8ds245v7Q",
    "session_jwt": "example_jwt",
    "member_session": { ...Stytch member session... },
    "member_authenticated": true,
    "intermediate_session_token": "",
    "mfa_required": null,
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
},
{
  "type": "B2B_PASSWORD_RESET_BY_SESSION",
  "data": {
    "member_id": "member-test-32fc5024-9c09-4da3-bd2e-c9ce4da9375f",
    "member": { ...Stytch member... },
    "organization": { ...Stytch organization... },
    "session_token": "mZAYn5aLEqKUlZ_Ad9U_fWr38GaAQ1oFAhT8ds245v7Q",
    "session_jwt": "example_jwt",
    "member_session": { ...Stytch member session... },
    "member_authenticated": true,
    "intermediate_session_token": "",
    "mfa_required": null,
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  },
},
{
  "type": "B2B_PASSWORD_DISCOVERY_AUTHENTICATE",
  "data": {
    "email_address": "sandbox@stytch.com",
    "intermediate_session_token": "SeiGwdj5lKkrEVgcEY3QNJXt6srxS3IK2Nwkar6mXD4=",
    "discovered_organizations": [{ ...Discovered Organization object... }, ...],
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
},
{
  "type": "B2B_PASSWORD_DISCOVERY_RESET_BY_EMAIL",
  "data": {
    "email_address": "sandbox@stytch.com",
    "intermediate_session_token": "SeiGwdj5lKkrEVgcEY3QNJXt6srxS3IK2Nwkar6mXD4=",
    "discovered_organizations": [{ ...Discovered Organization object... }, ...],
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
}

​
SSO

{
  "type": "B2B_SSO_START",
  "data": {}
},
{
  "type": "B2B_SSO_AUTHENTICATE",
  "data": {
    "member_id": "member-test-32fc5024-9c09-4da3-bd2e-c9ce4da9375f",
    "member": { ...Stytch member... },
    "organization": { ...Stytch organization... },
    "session_token": "mZAYn5aLEqKUlZ_Ad9U_fWr38GaAQ1oFAhT8ds245v7Q",
    "session_jwt": "example_jwt",
    "member_session": { ...Stytch member session... },
    "member_authenticated": true,
    "intermediate_session_token": "",
    "mfa_required": null,
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
},
{
  "type": "B2B_SSO_DISCOVER_CONNECTIONS",
  "data": {
    "connections": [
      {
        "connection_id": "saml-connection-test-51861cbc-d3b9-428b-9761-227f5fb12be9",
        "display_name": "Example SAML Connection",
        "identity_provider": "google-workspace"
      },
      ...
    ]
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
}

​
SMS OTP

{
  "type": "B2B_SMS_OTP_SEND",
  "data": {
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
},
{
  "type": "B2B_SMS_OTP_AUTHENTICATE",
  "data": {
    "member_id": "member-test-32fc5024-9c09-4da3-bd2e-c9ce4da9375f",
    "member": { ...Stytch member... },
    "organization": { ...Stytch organization... },
    "session_token": "mZAYn5aLEqKUlZ_Ad9U_fWr38GaAQ1oFAhT8ds245v7Q",
    "session_jwt": "example_jwt",
    "member_session": { ...Stytch member session... },
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
}

​
TOTP

{
  "type": "B2B_TOTP_CREATE",
  "data": {
    "member_id": "member-test-32fc5024-9c09-4da3-bd2e-c9ce4da9375f",
    "member": { ...Stytch member... },
    "organization": { ...Stytch organization... },
    "qr_code": "data:image/png;base64,...",
    "recovery_codes": ["abcd-efgh-1234", "ijkl-mnop-5678", "qrst-uvwx-9012"],
    "secret": "X4YCZUQATXPVO46J2EDTZY55NLTQZDQA",
    "totp_registration_id": "member-totp-test-9ed17883-fdfa-4795-9459-cd64a2bf351f",
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
},
{
  "type": "B2B_TOTP_AUTHENTICATE",
  "data": {
    "member_id": "member-test-32fc5024-9c09-4da3-bd2e-c9ce4da9375f",
    "member": { ...Stytch member... },
    "organization": { ...Stytch organization... },
    "session_token": "mZAYn5aLEqKUlZ_Ad9U_fWr38GaAQ1oFAhT8ds245v7Q",
    "session_jwt": "example_jwt",
    "member_session": { ...Stytch member session... },
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
},
{
  "type": "B2B_RECOVERY_CODES_RECOVER",
  "data": {
    "member_id": "member-test-32fc5024-9c09-4da3-bd2e-c9ce4da9375f",
    "member": { ...Stytch member... },
    "organization": { ...Stytch organization... },
    "session_token": "mZAYn5aLEqKUlZ_Ad9U_fWr38GaAQ1oFAhT8ds245v7Q",
    "session_jwt": "example_jwt",
    "member_session": { ...Stytch member session... },
    "recovery_codes_remaining": 9,
    "request_id": "request-id-test-b05c992f-ebdc-489d-a754-c7e70ba13141",
    "status_code": 200
  }
}

​
onError

A function that is called when an error occurs. The function expects an argument of an StytchError object, and the StytchError object has a message property. 
// Example of an API related error.
"message": "StytchSDKAPIError: [401] unauthorized_credentials Unauthorized credentials. See https://stytch.com/docs/api/errors/401 for more information. request_id: request-id-test-8e2a9758-713e-49a2-8b62-f9169bbabded",

// Example of a network related error.
"message": "SDKAPIUnreachableError: Failed to send magic link Unable to contact the Stytch servers. Are you online?"

// Example of a schema related error.
"message": "StytchSDKSchemaError: [400] Request does not match expected schema. email: should be string"

// Example of an error with using our SDK.
"message": "StytchSDKUsageError: Invalid call to <METHOD_NAME>"