Telnyx Messaging - Java

Installation

text

<!-- Maven -->
<dependency>
    <groupId>com.telnyx.sdk</groupId>
    <artifactId>telnyx</artifactId>
    <version>6.36.0</version>
</dependency>

// Gradle
implementation("com.telnyx.sdk:telnyx:6.36.0")

Setup

java

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:

java

import com.telnyx.sdk.models.messages.MessageSendParams;
import com.telnyx.sdk.models.messages.MessageSendResponse;
MessageSendParams params = MessageSendParams.builder()
    .to("+18445550001")
    .from("+18005550101")
    .text("Hello from Telnyx!")
    .build();
MessageSendResponse response = client.messages().send(params);

Common error codes:

invalid API key,

insufficient permissions,

resource not found,

validation error (check field formats),

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()
```
.

Operational Caveats

The sending number must already be assigned to the correct messaging profile before you send traffic from it.
US A2P long-code traffic must complete 10DLC registration before production sending or carriers will block or heavily filter messages.
Delivery webhooks are asynchronous. Treat the send response as acceptance of the request, not final carrier delivery.

Reference Use Rules

Do not invent Telnyx parameters, enums, response fields, or webhook fields.

If the parameter, enum, or response field you need is not shown inline in this skill, read references/api-details.md before writing code.
Before using any operation in
```
## Additional Operations
```
, read the optional-parameters section and the response-schemas section.
Before reading or matching webhook fields beyond the inline examples, read the webhook payload reference.

Core Tasks

Send an SMS

Primary outbound messaging flow. Agents need exact request fields and delivery-related response fields.

client.messages().send()

—

POST /messages

Parameter	Type	Required	Description
`to`	string (E.164)	Yes	Receiving address (+E.164 formatted phone number or short co...
`from`	string (E.164)	Yes	Sending address (+E.164 formatted phone number, alphanumeric...
`text`	string	Yes	Message body (i.e., content) as a non-empty string.
`messagingProfileId`	string (UUID)	No	Unique identifier for a messaging profile.
`mediaUrls`	array[string]	No	A list of media URLs.
`webhookUrl`	string (URL)	No	The URL where webhooks related to this message will be sent.
...			+7 optional params in references/api-details.md

java

import com.telnyx.sdk.models.messages.MessageSendParams;
import com.telnyx.sdk.models.messages.MessageSendResponse;

MessageSendParams params = MessageSendParams.builder()
    .to("+18445550001")
    .from("+18005550101")

    .text("Hello from Telnyx!")
    .build();
MessageSendResponse response = client.messages().send(params);

Primary response fields:

```
response.data.id
```
```
response.data.to
```
```
response.data.from
```
```
response.data.text
```
```
response.data.sentAt
```
```
response.data.errors
```

Send an SMS with an alphanumeric sender ID

Common sender variant that requires different request shape.

client.messages().sendWithAlphanumericSender()

—

POST /messages/alphanumeric_sender_id

Parameter	Type	Required	Description
`from`	string (E.164)	Yes	A valid alphanumeric sender ID on the user's account.
`to`	string (E.164)	Yes	Receiving address (+E.164 formatted phone number or short co...
`text`	string	Yes	The message body.
`messagingProfileId`	string (UUID)	Yes	The messaging profile ID to use.
`webhookUrl`	string (URL)	No	Callback URL for delivery status updates.
`webhookFailoverUrl`	string (URL)	No	Failover callback URL for delivery status updates.
`useProfileWebhooks`	boolean	No	If true, use the messaging profile's webhook settings.

java

import com.telnyx.sdk.models.messages.MessageSendWithAlphanumericSenderParams;
import com.telnyx.sdk.models.messages.MessageSendWithAlphanumericSenderResponse;

MessageSendWithAlphanumericSenderParams params = MessageSendWithAlphanumericSenderParams.builder()
    .from("MyCompany")
    .messagingProfileId("182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e")
    .text("Hello from Telnyx!")
    .to("+13125550001")
    .build();
MessageSendWithAlphanumericSenderResponse response = client.messages().sendWithAlphanumericSender(params);

Primary response fields:

```
response.data.id
```
```
response.data.to
```
```
response.data.from
```
```
response.data.text
```
```
response.data.sentAt
```
```
response.data.errors
```

Webhook Verification

Telnyx signs webhooks with Ed25519. Each request includes

telnyx-signature-ed25519

and

telnyx-timestamp

headers. Always verify signatures in production:

java

import com.telnyx.sdk.core.UnwrapWebhookParams;
import com.telnyx.sdk.core.http.Headers;

// In your webhook handler (e.g., Spring — use raw body):
@PostMapping("/webhooks")
public ResponseEntity<String> handleWebhook(
    @RequestBody String payload,
    HttpServletRequest request) {
  try {
    Headers headers = Headers.builder()
        .put("telnyx-signature-ed25519", request.getHeader("telnyx-signature-ed25519"))
        .put("telnyx-timestamp", request.getHeader("telnyx-timestamp"))
        .build();
    var event = client.webhooks().unwrap(
        UnwrapWebhookParams.builder()
            .body(payload)
            .headers(headers)
            .build());
    // Signature valid — process the event
    System.out.println("Received webhook event");
    return ResponseEntity.ok("OK");
  } catch (Exception e) {
    System.err.println("Webhook verification failed: " + e.getMessage());
    return ResponseEntity.badRequest().body("Invalid signature");
  }
}

Webhooks

These webhook payload fields are inline because they are part of the primary integration path.

Delivery Update

Field	Type	Description
`data.event_type`	enum: message.sent, message.finalized	The type of event being delivered.
`data.payload.id`	uuid	Identifies the type of resource.
`data.payload.to`	array[object]
`data.payload.text`	string	Message body (i.e., content) as a non-empty string.
`data.payload.sent_at`	date-time	ISO 8601 formatted date indicating when the message was sent.
`data.payload.completed_at`	date-time	ISO 8601 formatted date indicating when the message was finalized.
`data.payload.cost`	object \| null
`data.payload.errors`	array[object]	These errors may point at addressees when referring to unsuccessful/unconfirm...

Inbound Message

Field	Type	Description
`data.event_type`	enum: message.received	The type of event being delivered.
`data.payload.id`	uuid	Identifies the type of resource.
`data.payload.direction`	enum: inbound	The direction of the message.
`data.payload.to`	array[object]
`data.payload.text`	string	Message body (i.e., content) as a non-empty string.
`data.payload.type`	enum: SMS, MMS	The type of message.
`data.payload.media`	array[object]
`data.record_type`	enum: event	Identifies the type of the resource.

If you need webhook fields that are not listed inline here, read the webhook payload reference before writing the handler.

Important Supporting Operations

Use these when the core tasks above are close to your flow, but you need a common variation or follow-up step.

Send a group MMS message

Send one MMS payload to multiple recipients.

client.messages().sendGroupMms()

—

POST /messages/group_mms

Parameter	Type	Required	Description
`from`	string (E.164)	Yes	Phone number, in +E.164 format, used to send the message.
`to`	array[object]	Yes	A list of destinations.
`mediaUrls`	array[string]	No	A list of media URLs.
`webhookUrl`	string (URL)	No	The URL where webhooks related to this message will be sent.
`webhookFailoverUrl`	string (URL)	No	The failover URL where webhooks related to this message will...
...			+3 optional params in references/api-details.md

java

import com.telnyx.sdk.models.messages.MessageSendGroupMmsParams;
import com.telnyx.sdk.models.messages.MessageSendGroupMmsResponse;

MessageSendGroupMmsParams params = MessageSendGroupMmsParams.builder()
    .from("+13125551234")
    .addTo("+18655551234")
    .addTo("+14155551234")
    .text("Hello from Telnyx!")
    .build();
MessageSendGroupMmsResponse response = client.messages().sendGroupMms(params);

Primary response fields:

```
response.data.id
```
```
response.data.to
```
```
response.data.from
```
```
response.data.type
```
```
response.data.direction
```
```
response.data.text
```

Send a long code message

Force a long-code sending path instead of the generic send endpoint.

client.messages().sendLongCode()

—

POST /messages/long_code

Parameter	Type	Required	Description
`from`	string (E.164)	Yes	Phone number, in +E.164 format, used to send the message.
`to`	string (E.164)	Yes	Receiving address (+E.164 formatted phone number or short co...
`mediaUrls`	array[string]	No	A list of media URLs.
`webhookUrl`	string (URL)	No	The URL where webhooks related to this message will be sent.
`webhookFailoverUrl`	string (URL)	No	The failover URL where webhooks related to this message will...
...			+6 optional params in references/api-details.md

java

import com.telnyx.sdk.models.messages.MessageSendLongCodeParams;
import com.telnyx.sdk.models.messages.MessageSendLongCodeResponse;

MessageSendLongCodeParams params = MessageSendLongCodeParams.builder()
    .from("+18445550001")
    .to("+13125550002")
    .text("Hello from Telnyx!")
    .build();
MessageSendLongCodeResponse response = client.messages().sendLongCode(params);

Primary response fields:

```
response.data.id
```
```
response.data.to
```
```
response.data.from
```
```
response.data.type
```
```
response.data.direction
```
```
response.data.text
```

Send a message using number pool

Let a messaging profile or number pool choose the sender for you.

client.messages().sendNumberPool()

—

POST /messages/number_pool

Parameter	Type	Required	Description
`messagingProfileId`	string (UUID)	Yes	Unique identifier for a messaging profile.
`to`	string (E.164)	Yes	Receiving address (+E.164 formatted phone number or short co...
`mediaUrls`	array[string]	No	A list of media URLs.
`webhookUrl`	string (URL)	No	The URL where webhooks related to this message will be sent.
`webhookFailoverUrl`	string (URL)	No	The failover URL where webhooks related to this message will...
...			+6 optional params in references/api-details.md

java

import com.telnyx.sdk.models.messages.MessageSendNumberPoolParams;
import com.telnyx.sdk.models.messages.MessageSendNumberPoolResponse;

MessageSendNumberPoolParams params = MessageSendNumberPoolParams.builder()
    .messagingProfileId("abc85f64-5717-4562-b3fc-2c9600000000")
    .to("+13125550002")
    .text("Hello from Telnyx!")
    .build();
MessageSendNumberPoolResponse response = client.messages().sendNumberPool(params);

Primary response fields:

```
response.data.id
```
```
response.data.to
```
```
response.data.from
```
```
response.data.type
```
```
response.data.direction
```
```
response.data.text
```

Send a short code message

Force a short-code sending path when the sender must be a short code.

client.messages().sendShortCode()

—

POST /messages/short_code

Parameter	Type	Required	Description
`from`	string (E.164)	Yes	Phone number, in +E.164 format, used to send the message.
`to`	string (E.164)	Yes	Receiving address (+E.164 formatted phone number or short co...
`mediaUrls`	array[string]	No	A list of media URLs.
`webhookUrl`	string (URL)	No	The URL where webhooks related to this message will be sent.
`webhookFailoverUrl`	string (URL)	No	The failover URL where webhooks related to this message will...
...			+6 optional params in references/api-details.md

java

import com.telnyx.sdk.models.messages.MessageSendShortCodeParams;
import com.telnyx.sdk.models.messages.MessageSendShortCodeResponse;

MessageSendShortCodeParams params = MessageSendShortCodeParams.builder()
    .from("+18445550001")
    .to("+18445550001")
    .text("Hello from Telnyx!")
    .build();
MessageSendShortCodeResponse response = client.messages().sendShortCode(params);

Primary response fields:

```
response.data.id
```
```
response.data.to
```
```
response.data.from
```
```
response.data.type
```
```
response.data.direction
```
```
response.data.text
```

Schedule a message

Queue a message for future delivery instead of sending immediately.

client.messages().schedule()

—

POST /messages/schedule

Parameter	Type	Required	Description
`to`	string (E.164)	Yes	Receiving address (+E.164 formatted phone number or short co...
`messagingProfileId`	string (UUID)	No	Unique identifier for a messaging profile.
`mediaUrls`	array[string]	No	A list of media URLs.
`webhookUrl`	string (URL)	No	The URL where webhooks related to this message will be sent.
...			+8 optional params in references/api-details.md

java

import com.telnyx.sdk.models.messages.MessageScheduleParams;
import com.telnyx.sdk.models.messages.MessageScheduleResponse;

MessageScheduleParams params = MessageScheduleParams.builder()
    .to("+18445550001")
    .from("+18005550101")

    .text("Appointment reminder")

    .sendAt("2025-07-01T15:00:00Z")
    .build();
MessageScheduleResponse response = client.messages().schedule(params);

Primary response fields:

```
response.data.id
```
```
response.data.to
```
```
response.data.from
```
```
response.data.type
```
```
response.data.direction
```
```
response.data.text
```

Send a WhatsApp message

Send WhatsApp traffic instead of SMS/MMS.

client.messages().sendWhatsapp()

—

POST /messages/whatsapp

Parameter	Type	Required	Description
`from`	string (E.164)	Yes	Phone number in +E.164 format associated with Whatsapp accou...
`to`	string (E.164)	Yes	Phone number in +E.164 format
`whatsappMessage`	object	Yes
`type`	enum (WHATSAPP)	No	Message type - must be set to "WHATSAPP"
`webhookUrl`	string (URL)	No	The URL where webhooks related to this message will be sent.

java

import com.telnyx.sdk.models.messages.MessageSendWhatsappParams;
import com.telnyx.sdk.models.messages.MessageSendWhatsappResponse;
import com.telnyx.sdk.models.messages.WhatsappMessageContent;

MessageSendWhatsappParams params = MessageSendWhatsappParams.builder()
    .from("+13125551234")
    .to("+13125551234")
    .whatsappMessage(WhatsappMessageContent.builder().build())
    .build();
MessageSendWhatsappResponse response = client.messages().sendWhatsapp(params);

Primary response fields:

```
response.data.id
```
```
response.data.to
```
```
response.data.from
```
```
response.data.type
```
```
response.data.direction
```
```
response.data.body
```

Additional Operations

Use the core tasks above first. The operations below are indexed here with exact SDK methods and required params; use references/api-details.md for full optional params, response schemas, and lower-frequency webhook payloads. Before using any operation below, read the optional-parameters section and the response-schemas section so you do not guess missing fields.

Operation	SDK method	Endpoint	Use when	Required params
Retrieve a message	`client.messages().retrieve()`	`GET /messages/{id}`	Fetch the current state before updating, deleting, or making control-flow decisions.	`id`
Cancel a scheduled message	`client.messages().cancelScheduled()`	`DELETE /messages/{id}`	Remove, detach, or clean up an existing resource.	`id`
List alphanumeric sender IDs	`client.alphanumericSenderIds().list()`	`GET /alphanumeric_sender_ids`	Inspect available resources or choose an existing resource before mutating it.	None
Create an alphanumeric sender ID	`client.alphanumericSenderIds().create()`	`POST /alphanumeric_sender_ids`	Create or provision an additional resource when the core tasks do not cover this flow.	`alphanumericSenderId` , `messagingProfileId`
Retrieve an alphanumeric sender ID	`client.alphanumericSenderIds().retrieve()`	`GET /alphanumeric_sender_ids/{id}`	Fetch the current state before updating, deleting, or making control-flow decisions.	`id`
Delete an alphanumeric sender ID	`client.alphanumericSenderIds().delete()`	`DELETE /alphanumeric_sender_ids/{id}`	Remove, detach, or clean up an existing resource.	`id`
Retrieve group MMS messages	`client.messages().retrieveGroupMessages()`	`GET /messages/group/{message_id}`	Fetch the current state before updating, deleting, or making control-flow decisions.	`messageId`
List messaging hosted numbers	`client.messagingHostedNumbers().list()`	`GET /messaging_hosted_numbers`	Inspect available resources or choose an existing resource before mutating it.	None
Retrieve a messaging hosted number	`client.messagingHostedNumbers().retrieve()`	`GET /messaging_hosted_numbers/{id}`	Fetch the current state before updating, deleting, or making control-flow decisions.	`id`
Update a messaging hosted number	`client.messagingHostedNumbers().update()`	`PATCH /messaging_hosted_numbers/{id}`	Modify an existing resource without recreating it.	`id`
List opt-outs	`client.messagingOptouts().list()`	`GET /messaging_optouts`	Inspect available resources or choose an existing resource before mutating it.	None
List high-level messaging profile metrics	`client.messagingProfileMetrics().list()`	`GET /messaging_profile_metrics`	Inspect available resources or choose an existing resource before mutating it.	None
Regenerate messaging profile secret	`client.messagingProfiles().actions().regenerateSecret()`	`POST /messaging_profiles/{id}/actions/regenerate_secret`	Trigger a follow-up action in an existing workflow rather than creating a new top-level resource.	`id`
List alphanumeric sender IDs for a messaging profile	`client.messagingProfiles().listAlphanumericSenderIds()`	`GET /messaging_profiles/{id}/alphanumeric_sender_ids`	Fetch the current state before updating, deleting, or making control-flow decisions.	`id`
Get detailed messaging profile metrics	`client.messagingProfiles().retrieveMetrics()`	`GET /messaging_profiles/{id}/metrics`	Fetch the current state before updating, deleting, or making control-flow decisions.	`id`
List Auto-Response Settings	`client.messagingProfiles().autorespConfigs().list()`	`GET /messaging_profiles/{profile_id}/autoresp_configs`	Fetch the current state before updating, deleting, or making control-flow decisions.	`profileId`
Create auto-response setting	`client.messagingProfiles().autorespConfigs().create()`	`POST /messaging_profiles/{profile_id}/autoresp_configs`	Create or provision an additional resource when the core tasks do not cover this flow.	`op` , `keywords` , `countryCode` , `profileId`
Get Auto-Response Setting	`client.messagingProfiles().autorespConfigs().retrieve()`	`GET /messaging_profiles/{profile_id}/autoresp_configs/{autoresp_cfg_id}`	Fetch the current state before updating, deleting, or making control-flow decisions.	`profileId` , `autorespCfgId`
Update Auto-Response Setting	`client.messagingProfiles().autorespConfigs().update()`	`PUT /messaging_profiles/{profile_id}/autoresp_configs/{autoresp_cfg_id}`	Modify an existing resource without recreating it.	`op` , `keywords` , `countryCode` , `profileId` , +1 more
Delete Auto-Response Setting	`client.messagingProfiles().autorespConfigs().delete()`	`DELETE /messaging_profiles/{profile_id}/autoresp_configs/{autoresp_cfg_id}`	Remove, detach, or clean up an existing resource.	`profileId` , `autorespCfgId`

Other Webhook Events

Event	`data.event_type`	Description
`replacedLinkClick`	`message.link_click`	Replaced Link Click

For exhaustive optional parameters, full response schemas, and complete webhook payloads, see references/api-details.md.

telnyx-messaging-java

NPX Install

Tags

SKILL.md Content

Telnyx Messaging - Java

Installation

Setup

Error Handling

Important Notes

Operational Caveats

Reference Use Rules

Core Tasks

Send an SMS

Send an SMS with an alphanumeric sender ID

Webhook Verification

Webhooks

Delivery Update

Inbound Message

Important Supporting Operations

Send a group MMS message

Send a long code message

Send a message using number pool

Send a short code message

Schedule a message

Send a WhatsApp message

Additional Operations

Other Webhook Events