import com.telnyx.sdk.client.TelnyxClient;
import com.telnyx.sdk.client.okhttp.TelnyxOkHttpClient;

TelnyxClient client = TelnyxOkHttpClient.fromEnv();

All examples below assume client is already initialized as shown above.

Error Handling

All API calls can fail with network errors, rate limits (429), validation errors (422), or authentication errors (401). Always handle errors in production code:

import com.telnyx.sdk.errors.TelnyxServiceException;

try {
    var result = client.messages().send(params);
} catch (TelnyxServiceException e) {
    System.err.println("API error " + e.statusCode() + ": " + e.getMessage());
    if (e.statusCode() == 422) {
        System.err.println("Validation error — check required fields and formats");
    } else if (e.statusCode() == 429) {
        // Rate limited — wait and retry with exponential backoff
        Thread.sleep(1000);
    }
}

Common error codes: 401 invalid API key, 403 insufficient permissions, 404 resource not found, 422 validation error (check field formats), 429 rate limited (retry with exponential backoff).

Important Notes

Phone numbers must be in E.164 format (e.g., +13125550001). Include the + prefix and country code. No spaces, dashes, or parentheses.
Pagination: List methods return a page. Use .autoPager() for automatic iteration: for (var item : page.autoPager()) { ... }. For manual control, use .hasNextPage() and .nextPage().

Lookup phone number data

Returns information about the provided phone number.

GET /number_lookup/{phone_number}

import com.telnyx.sdk.models.numberlookup.NumberLookupRetrieveParams;
import com.telnyx.sdk.models.numberlookup.NumberLookupRetrieveResponse;

NumberLookupRetrieveResponse numberLookup = client.numberLookup().retrieve("+18665552368");

Returns: caller_name (object), carrier (object), country_code (string), fraud (string | null), national_format (string), phone_number (string), portability (object), record_type (string)

List verifications by phone number

GET /verifications/by_phone_number/{phone_number}

import com.telnyx.sdk.models.verifications.byphonenumber.ByPhoneNumberListParams;
import com.telnyx.sdk.models.verifications.byphonenumber.ByPhoneNumberListResponse;

ByPhoneNumberListResponse byPhoneNumbers = client.verifications().byPhoneNumber().list("+13035551234");

Returns: created_at (string), custom_code (string | null), id (uuid), phone_number (string), record_type (enum: verification), status (enum: pending, accepted, invalid, expired, error), timeout_secs (integer), type (enum: sms, call, flashcall), updated_at (string), verify_profile_id (uuid)

Verify verification code by phone number

POST /verifications/by_phone_number/{phone_number}/actions/verify — Required: code, verify_profile_id

import com.telnyx.sdk.models.verifications.byphonenumber.actions.ActionVerifyParams;
import com.telnyx.sdk.models.verifications.byphonenumber.actions.VerifyVerificationCodeResponse;

ActionVerifyParams params = ActionVerifyParams.builder()
    .phoneNumber("+13035551234")
    .code("17686")
    .verifyProfileId("12ade33a-21c0-473b-b055-b3c836e1c292")
    .build();
VerifyVerificationCodeResponse verifyVerificationCodeResponse = client.verifications().byPhoneNumber().actions().verify(params);

Returns: phone_number (string), response_code (enum: accepted, rejected)

Trigger Call verification

POST /verifications/call — Required: phone_number, verify_profile_id

Optional: custom_code (string | null), extension (string | null), timeout_secs (integer)

import com.telnyx.sdk.models.verifications.CreateVerificationResponse;
import com.telnyx.sdk.models.verifications.VerificationTriggerCallParams;

VerificationTriggerCallParams params = VerificationTriggerCallParams.builder()
    .phoneNumber("+13035551234")
    .verifyProfileId("12ade33a-21c0-473b-b055-b3c836e1c292")
    .build();
CreateVerificationResponse createVerificationResponse = client.verifications().triggerCall(params);

Trigger Flash call verification

POST /verifications/flashcall — Required: phone_number, verify_profile_id

Optional: timeout_secs (integer)

import com.telnyx.sdk.models.verifications.CreateVerificationResponse;
import com.telnyx.sdk.models.verifications.VerificationTriggerFlashcallParams;

VerificationTriggerFlashcallParams params = VerificationTriggerFlashcallParams.builder()
    .phoneNumber("+13035551234")
    .verifyProfileId("12ade33a-21c0-473b-b055-b3c836e1c292")
    .build();
CreateVerificationResponse createVerificationResponse = client.verifications().triggerFlashcall(params);

Trigger SMS verification

POST /verifications/sms — Required: phone_number, verify_profile_id

Optional: custom_code (string | null), timeout_secs (integer)

import com.telnyx.sdk.models.verifications.CreateVerificationResponse;
import com.telnyx.sdk.models.verifications.VerificationTriggerSmsParams;

VerificationTriggerSmsParams params = VerificationTriggerSmsParams.builder()
    .phoneNumber("+13035551234")
    .verifyProfileId("12ade33a-21c0-473b-b055-b3c836e1c292")
    .build();
CreateVerificationResponse createVerificationResponse = client.verifications().triggerSms(params);

Retrieve verification

GET /verifications/{verification_id}

import com.telnyx.sdk.models.verifications.VerificationRetrieveParams;
import com.telnyx.sdk.models.verifications.VerificationRetrieveResponse;

VerificationRetrieveResponse verification = client.verifications().retrieve("12ade33a-21c0-473b-b055-b3c836e1c292");

Verify verification code by ID

POST /verifications/{verification_id}/actions/verify

Optional: code (string), status (enum: accepted, rejected)

import com.telnyx.sdk.models.verifications.actions.ActionVerifyParams;
import com.telnyx.sdk.models.verifications.byphonenumber.actions.VerifyVerificationCodeResponse;

VerifyVerificationCodeResponse verifyVerificationCodeResponse = client.verifications().actions().verify("12ade33a-21c0-473b-b055-b3c836e1c292");

Returns: phone_number (string), response_code (enum: accepted, rejected)

List all Verify profiles

Gets a paginated list of Verify profiles.

GET /verify_profiles

import com.telnyx.sdk.models.verifyprofiles.VerifyProfileListPage;
import com.telnyx.sdk.models.verifyprofiles.VerifyProfileListParams;

VerifyProfileListPage page = client.verifyProfiles().list();

Returns: call (object), created_at (string), flashcall (object), id (uuid), language (string), name (string), rcs (object), record_type (enum: verification_profile), sms (object), updated_at (string), webhook_failover_url (string), webhook_url (string)

Create a Verify profile

Creates a new Verify profile to associate verifications with.

POST /verify_profiles — Required: name

Optional: call (object), flashcall (object), language (string), rcs (object), sms (object), webhook_failover_url (string), webhook_url (string)

import com.telnyx.sdk.models.verifyprofiles.VerifyProfileCreateParams;
import com.telnyx.sdk.models.verifyprofiles.VerifyProfileData;

VerifyProfileCreateParams params = VerifyProfileCreateParams.builder()
    .name("Test Profile")
    .build();
VerifyProfileData verifyProfileData = client.verifyProfiles().create(params);

Retrieve Verify profile message templates

List all Verify profile message templates.

GET /verify_profiles/templates

import com.telnyx.sdk.models.verifyprofiles.VerifyProfileRetrieveTemplatesParams;
import com.telnyx.sdk.models.verifyprofiles.VerifyProfileRetrieveTemplatesResponse;

VerifyProfileRetrieveTemplatesResponse response = client.verifyProfiles().retrieveTemplates();

Returns: id (uuid), text (string)

Create message template

Create a new Verify profile message template.

POST /verify_profiles/templates — Required: text

import com.telnyx.sdk.models.verifyprofiles.MessageTemplate;
import com.telnyx.sdk.models.verifyprofiles.VerifyProfileCreateTemplateParams;

VerifyProfileCreateTemplateParams params = VerifyProfileCreateTemplateParams.builder()
    .text("Your {{app_name}} verification code is: {{code}}.")
    .build();
MessageTemplate messageTemplate = client.verifyProfiles().createTemplate(params);

Returns: id (uuid), text (string)

Update message template

Update an existing Verify profile message template.

PATCH /verify_profiles/templates/{template_id} — Required: text

import com.telnyx.sdk.models.verifyprofiles.MessageTemplate;
import com.telnyx.sdk.models.verifyprofiles.VerifyProfileUpdateTemplateParams;

VerifyProfileUpdateTemplateParams params = VerifyProfileUpdateTemplateParams.builder()
    .templateId("12ade33a-21c0-473b-b055-b3c836e1c292")
    .text("Your {{app_name}} verification code is: {{code}}.")
    .build();
MessageTemplate messageTemplate = client.verifyProfiles().updateTemplate(params);

Returns: id (uuid), text (string)

Retrieve Verify profile

Gets a single Verify profile.

GET /verify_profiles/{verify_profile_id}

import com.telnyx.sdk.models.verifyprofiles.VerifyProfileData;
import com.telnyx.sdk.models.verifyprofiles.VerifyProfileRetrieveParams;

VerifyProfileData verifyProfileData = client.verifyProfiles().retrieve("12ade33a-21c0-473b-b055-b3c836e1c292");

Update Verify profile

PATCH /verify_profiles/{verify_profile_id}

Optional: call (object), flashcall (object), language (string), name (string), rcs (object), sms (object), webhook_failover_url (string), webhook_url (string)

import com.telnyx.sdk.models.verifyprofiles.VerifyProfileData;
import com.telnyx.sdk.models.verifyprofiles.VerifyProfileUpdateParams;

VerifyProfileData verifyProfileData = client.verifyProfiles().update("12ade33a-21c0-473b-b055-b3c836e1c292");

Delete Verify profile

DELETE /verify_profiles/{verify_profile_id}

import com.telnyx.sdk.models.verifyprofiles.VerifyProfileData;
import com.telnyx.sdk.models.verifyprofiles.VerifyProfileDeleteParams;

VerifyProfileData verifyProfileData = client.verifyProfiles().delete("12ade33a-21c0-473b-b055-b3c836e1c292");

telnyx-verify-java

Telnyx Verify - Java

Installation

Setup