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REST API: Applications

An Application Resource (also referred to as a "TwiML Application" or "TwiML App") represents a collection of endpoints that return TwiML instructions to Twilio. TwiML Applications are most commonly used for the Voice SDKs to handle outbound calls, but can also be used to configure multiple phone numbers with the same set of TwiML endpoints. TwiML Applications can be configured via the Applications Resource or via the Console on the TwiML Apps page.

The Applications list resource represents the set of an account's Twilio applications. You can POST to the list resource to create a new application. Note that accounts can contain at most 1000 applications.

Applications are useful for encapsulating configuration information that you need to distribute across multiple phone numbers. You can assign an ApplicationSid to an IncomingPhoneNumber to tell Twilio to use the application's URLs instead of the ones set directly on the IncomingPhoneNumber. So if you create an application with its VoiceUrl set to http://myapp.com/answer, you can assign that application to all of your phone numbers and Twilio will make a request to that URL whenever a call comes in.

Application Properties

Property nameTypeRequiredDescriptionChild properties

accountSidSID<AC>

Optional

The SID of the Account that created the Application resource.

Pattern: ^AC[0-9a-fA-F]{32}$Min length: 34Max length: 34

apiVersionstring

Optional

The API version used to start a new TwiML session.

dateCreatedstring<date-time-rfc-2822>

Optional

The date and time in GMT that the resource was created specified in RFC 2822 format.

dateUpdatedstring<date-time-rfc-2822>

Optional

The date and time in GMT that the resource was last updated specified in RFC 2822 format.

friendlyNamestring

Optional

The string that you assigned to describe the resource.

messageStatusCallbackstring<uri>

Optional

The URL we call using a POST method to send message status information to your application.

sidSID<AP>

Optional

The unique string that that we created to identify the Application resource.

Pattern: ^AP[0-9a-fA-F]{32}$Min length: 34Max length: 34

smsFallbackMethodenum<http-method>

Optional

The HTTP method we use to call sms_fallback_url. Can be: GET or POST.

Possible values:

GETPOST

smsFallbackUrlstring<uri>

Optional

The URL that we call when an error occurs while retrieving or executing the TwiML from sms_url.

smsMethodenum<http-method>

Optional

The HTTP method we use to call sms_url. Can be: GET or POST.

Possible values:

GETPOST

smsStatusCallbackstring<uri>

Optional

The URL we call using a POST method to send status information to your application about SMS messages that refer to the application.

smsUrlstring<uri>

Optional

The URL we call when the phone number receives an incoming SMS message.

statusCallbackstring<uri>

Optional

The URL we call using the status_callback_method to send status information to your application.

statusCallbackMethodenum<http-method>

Optional

The HTTP method we use to call status_callback. Can be: GET or POST.

Possible values:

GETPOST

uristring

Optional

The URI of the resource, relative to https://api.twilio.com.

voiceCallerIdLookupboolean

Optional

Whether we look up the caller's caller-ID name from the CNAM database (additional charges apply). Can be: true or false.

voiceFallbackMethodenum<http-method>

Optional

The HTTP method we use to call voice_fallback_url. Can be: GET or POST.

Possible values:

GETPOST

voiceFallbackUrlstring<uri>

Optional

The URL that we call when an error occurs retrieving or executing the TwiML requested by url.

voiceMethodenum<http-method>

Optional

The HTTP method we use to call voice_url. Can be: GET or POST.

Possible values:

GETPOST

voiceUrlstring<uri>

Optional

The URL we call when the phone number assigned to this application receives a call.

publicApplicationConnectEnabledboolean

Optional

Whether to allow other Twilio accounts to dial this applicaton using Dial verb. Can be: true or false.

Create an Application resource

POST https://api.twilio.com/2010-04-01/Accounts/{AccountSid}/Applications.json

Creates a new application within your account.

If successful, Twilio responds with a representation of the new application.

Path parameters

Property nameTypeRequiredPIIDescription

accountSidSID<AC>

required

The SID of the Account that will create the resource.

Pattern: ^AC[0-9a-fA-F]{32}$Min length: 34Max length: 34

Request body parameters

Encoding type:application/x-www-form-urlencoded

SchemaExample

Property nameTypeRequiredDescriptionChild properties

apiVersionstring

Optional

The API version to use to start a new TwiML session. Can be: 2010-04-01 or 2008-08-01. The default value is the account's default API version.

voiceUrlstring<uri>

Optional

The URL we should call when the phone number assigned to this application receives a call.

voiceMethodenum<http-method>

Optional

The HTTP method we should use to call voice_url. Can be: GET or POST.

Possible values:

GETPOST

voiceFallbackUrlstring<uri>

Optional

The URL that we should call when an error occurs retrieving or executing the TwiML requested by url.

voiceFallbackMethodenum<http-method>

Optional

The HTTP method we should use to call voice_fallback_url. Can be: GET or POST.

Possible values:

GETPOST

statusCallbackstring<uri>

Optional

The URL we should call using the status_callback_method to send status information to your application.

statusCallbackMethodenum<http-method>

Optional

The HTTP method we should use to call status_callback. Can be: GET or POST.

Possible values:

GETPOST

voiceCallerIdLookupboolean

Optional

Whether we should look up the caller's caller-ID name from the CNAM database (additional charges apply). Can be: true or false.

smsUrlstring<uri>

Optional

The URL we should call when the phone number receives an incoming SMS message.

smsMethodenum<http-method>

Optional

The HTTP method we should use to call sms_url. Can be: GET or POST.

Possible values:

GETPOST

smsFallbackUrlstring<uri>

Optional

The URL that we should call when an error occurs while retrieving or executing the TwiML from sms_url.

smsFallbackMethodenum<http-method>

Optional

The HTTP method we should use to call sms_fallback_url. Can be: GET or POST.

Possible values:

GETPOST

smsStatusCallbackstring<uri>

Optional

The URL we should call using a POST method to send status information about SMS messages sent by the application.

messageStatusCallbackstring<uri>

Optional

The URL we should call using a POST method to send message status information to your application.

friendlyNamestring

Optional

A descriptive string that you create to describe the new application. It can be up to 64 characters long.

publicApplicationConnectEnabledboolean

Optional

Whether to allow other Twilio accounts to dial this applicaton using Dial verb. Can be: true or false.

Create a New Application Within Your Account

1// Download the helper library from https://www.twilio.com/docs/node/install
2const twilio = require("twilio"); // Or, for ESM: import twilio from "twilio";
3
4// Find your Account SID and Auth Token at twilio.com/console
5// and set the environment variables. See http://twil.io/secure
6const accountSid = process.env.TWILIO_ACCOUNT_SID;
7const authToken = process.env.TWILIO_AUTH_TOKEN;
8const client = twilio(accountSid, authToken);
9
10async function createApplication() {
11  const application = await client.applications.create({
12    friendlyName: "Phone Me",
13    voiceMethod: "GET",
14    voiceUrl: "http://demo.twilio.com/docs/voice.xml",
15  });
16
17  console.log(application.accountSid);
18}
19
20createApplication();

Response

Note: This shows the raw API response from Twilio. Responses from SDKs (Java, Python, etc.) may look a little different.

1{
2  "account_sid": "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
3  "api_version": "2010-04-01",
4  "date_created": "Mon, 22 Aug 2011 20:59:45 +0000",
5  "date_updated": "Tue, 18 Aug 2015 16:48:57 +0000",
6  "friendly_name": "Phone Me",
7  "message_status_callback": "http://www.example.com/sms-status-callback",
8  "sid": "APaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
9  "sms_fallback_method": "GET",
10  "sms_fallback_url": "http://www.example.com/sms-fallback",
11  "sms_method": "GET",
12  "sms_status_callback": "http://www.example.com/sms-status-callback",
13  "sms_url": "http://example.com",
14  "status_callback": "http://example.com",
15  "status_callback_method": "GET",
16  "uri": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Applications/APaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.json",
17  "voice_caller_id_lookup": false,
18  "voice_fallback_method": "GET",
19  "voice_fallback_url": "http://www.example.com/voice-callback",
20  "voice_method": "GET",
21  "voice_url": "http://demo.twilio.com/docs/voice.xml",
22  "public_application_connect_enabled": true
23}

Fetch an Application resource

GET https://api.twilio.com/2010-04-01/Accounts/{AccountSid}/Applications/{Sid}.json

Path parameters

Property nameTypeRequiredPIIDescription

accountSidSID<AC>

required

The SID of the Account that created the Application resource to fetch.

Pattern: ^AC[0-9a-fA-F]{32}$Min length: 34Max length: 34

sidSID<AP>

required

The Twilio-provided string that uniquely identifies the Application resource to fetch.

Pattern: ^AP[0-9a-fA-F]{32}$Min length: 34Max length: 34

Fetch an Application

1// Download the helper library from https://www.twilio.com/docs/node/install
2const twilio = require("twilio"); // Or, for ESM: import twilio from "twilio";
3
4// Find your Account SID and Auth Token at twilio.com/console
5// and set the environment variables. See http://twil.io/secure
6const accountSid = process.env.TWILIO_ACCOUNT_SID;
7const authToken = process.env.TWILIO_AUTH_TOKEN;
8const client = twilio(accountSid, authToken);
9
10async function fetchApplication() {
11  const application = await client
12    .applications("APXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX")
13    .fetch();
14
15  console.log(application.accountSid);
16}
17
18fetchApplication();

Response

Note: This shows the raw API response from Twilio. Responses from SDKs (Java, Python, etc.) may look a little different.

1{
2  "account_sid": "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
3  "api_version": "2010-04-01",
4  "date_created": "Mon, 22 Aug 2011 20:59:45 +0000",
5  "date_updated": "Tue, 18 Aug 2015 16:48:57 +0000",
6  "friendly_name": "Application Friendly Name",
7  "message_status_callback": "http://www.example.com/sms-status-callback",
8  "sid": "APXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
9  "sms_fallback_method": "GET",
10  "sms_fallback_url": "http://www.example.com/sms-fallback",
11  "sms_method": "GET",
12  "sms_status_callback": "http://www.example.com/sms-status-callback",
13  "sms_url": "http://example.com",
14  "status_callback": "http://example.com",
15  "status_callback_method": "GET",
16  "uri": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Applications/APaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.json",
17  "voice_caller_id_lookup": false,
18  "voice_fallback_method": "GET",
19  "voice_fallback_url": "http://www.example.com/voice-callback",
20  "voice_method": "GET",
21  "voice_url": "http://example.com",
22  "public_application_connect_enabled": false
23}

Read multiple Application resources

GET https://api.twilio.com/2010-04-01/Accounts/{AccountSid}/Applications.json

Returns a list of Application resource representations, each representing an application within your account. The list includes paging information.

Path parameters

Property nameTypeRequiredPIIDescription

accountSidSID<AC>

required

The SID of the Account that created the Application resources to read.

Pattern: ^AC[0-9a-fA-F]{32}$Min length: 34Max length: 34

Query parameters

Property nameTypeRequiredPIIDescription

friendlyNamestring

Optional

The string that identifies the Application resources to read.

pageSizeinteger<int64>

Optional

How many resources to return in each list page. The default is 50, and the maximum is 1000.

Minimum: 1Maximum: 1000

pageinteger

Optional

The page index. This value is simply for client state.

Minimum: 0

pageTokenstring

Optional

The page token. This is provided by the API.

List All Application Resource Representations

1// Download the helper library from https://www.twilio.com/docs/node/install
2const twilio = require("twilio"); // Or, for ESM: import twilio from "twilio";
3
4// Find your Account SID and Auth Token at twilio.com/console
5// and set the environment variables. See http://twil.io/secure
6const accountSid = process.env.TWILIO_ACCOUNT_SID;
7const authToken = process.env.TWILIO_AUTH_TOKEN;
8const client = twilio(accountSid, authToken);
9
10async function listApplication() {
11  const applications = await client.applications.list({ limit: 20 });
12
13  applications.forEach((a) => console.log(a.accountSid));
14}
15
16listApplication();

Response

Note: This shows the raw API response from Twilio. Responses from SDKs (Java, Python, etc.) may look a little different.

1{
2  "applications": [
3    {
4      "account_sid": "ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
5      "api_version": "2010-04-01",
6      "date_created": "Fri, 21 Aug 2015 00:07:25 +0000",
7      "date_updated": "Fri, 21 Aug 2015 00:07:25 +0000",
8      "friendly_name": "d8821fb7-4d01-48b2-bdc5-34e46252b90b",
9      "message_status_callback": null,
10      "sid": "APaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
11      "sms_fallback_method": "POST",
12      "sms_fallback_url": null,
13      "sms_method": "POST",
14      "sms_status_callback": null,
15      "sms_url": null,
16      "status_callback": null,
17      "status_callback_method": "POST",
18      "uri": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Applications/APaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.json",
19      "voice_caller_id_lookup": false,
20      "voice_fallback_method": "POST",
21      "voice_fallback_url": null,
22      "voice_method": "POST",
23      "voice_url": null,
24      "public_application_connect_enabled": false
25    }
26  ],
27  "end": 0,
28  "first_page_uri": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Applications.json?FriendlyName=friendly_name&PageSize=1&Page=0",
29  "next_page_uri": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Applications.json?FriendlyName=friendly_name&PageSize=1&Page=1&PageToken=PAAPaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
30  "previous_page_uri": null,
31  "page_size": 1,
32  "page": 0,
33  "start": 0,
34  "uri": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Applications.json?FriendlyName=friendly_name&PageSize=1&Page=0"
35}

Return the Application named 'MyApp'

1// Download the helper library from https://www.twilio.com/docs/node/install
2const twilio = require("twilio"); // Or, for ESM: import twilio from "twilio";
3
4// Find your Account SID and Auth Token at twilio.com/console
5// and set the environment variables. See http://twil.io/secure
6const accountSid = process.env.TWILIO_ACCOUNT_SID;
7const authToken = process.env.TWILIO_AUTH_TOKEN;
8const client = twilio(accountSid, authToken);
9
10async function listApplication() {
11  const applications = await client.applications.list({
12    friendlyName: "MyApp",
13    limit: 20,
14  });
15
16  applications.forEach((a) => console.log(a.accountSid));
17}
18
19listApplication();

Response

Note: This shows the raw API response from Twilio. Responses from SDKs (Java, Python, etc.) may look a little different.

1{
2  "applications": [
3    {
4      "account_sid": "ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
5      "api_version": "2010-04-01",
6      "date_created": "Fri, 21 Aug 2015 00:07:25 +0000",
7      "date_updated": "Fri, 21 Aug 2015 00:07:25 +0000",
8      "friendly_name": "d8821fb7-4d01-48b2-bdc5-34e46252b90b",
9      "message_status_callback": null,
10      "sid": "APaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
11      "sms_fallback_method": "POST",
12      "sms_fallback_url": null,
13      "sms_method": "POST",
14      "sms_status_callback": null,
15      "sms_url": null,
16      "status_callback": null,
17      "status_callback_method": "POST",
18      "uri": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Applications/APaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.json",
19      "voice_caller_id_lookup": false,
20      "voice_fallback_method": "POST",
21      "voice_fallback_url": null,
22      "voice_method": "POST",
23      "voice_url": null,
24      "public_application_connect_enabled": false
25    }
26  ],
27  "end": 0,
28  "first_page_uri": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Applications.json?FriendlyName=friendly_name&PageSize=1&Page=0",
29  "next_page_uri": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Applications.json?FriendlyName=friendly_name&PageSize=1&Page=1&PageToken=PAAPaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
30  "previous_page_uri": null,
31  "page_size": 1,
32  "page": 0,
33  "start": 0,
34  "uri": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Applications.json?FriendlyName=friendly_name&PageSize=1&Page=0"
35}

Update an Application resource

POST https://api.twilio.com/2010-04-01/Accounts/{AccountSid}/Applications/{Sid}.json

Tries to update the application's properties, and returns the updated resource representation if successful. The returned response is identical to that returned above when making a GET request.

Path parameters

Property nameTypeRequiredPIIDescription

accountSidSID<AC>

required

The SID of the Account that created the Application resources to update.

Pattern: ^AC[0-9a-fA-F]{32}$Min length: 34Max length: 34

sidSID<AP>

required

The Twilio-provided string that uniquely identifies the Application resource to update.

Pattern: ^AP[0-9a-fA-F]{32}$Min length: 34Max length: 34

Request body parameters

Encoding type:application/x-www-form-urlencoded

SchemaExample

Property nameTypeRequiredDescriptionChild properties

friendlyNamestring

Optional

A descriptive string that you create to describe the resource. It can be up to 64 characters long.

apiVersionstring

Optional

The API version to use to start a new TwiML session. Can be: 2010-04-01 or 2008-08-01. The default value is your account's default API version.

voiceUrlstring<uri>

Optional

The URL we should call when the phone number assigned to this application receives a call.

voiceMethodenum<http-method>

Optional

The HTTP method we should use to call voice_url. Can be: GET or POST.

Possible values:

GETPOST

voiceFallbackUrlstring<uri>

Optional

The URL that we should call when an error occurs retrieving or executing the TwiML requested by url.

voiceFallbackMethodenum<http-method>

Optional

The HTTP method we should use to call voice_fallback_url. Can be: GET or POST.

Possible values:

GETPOST

statusCallbackstring<uri>

Optional

The URL we should call using the status_callback_method to send status information to your application.

statusCallbackMethodenum<http-method>

Optional

The HTTP method we should use to call status_callback. Can be: GET or POST.

Possible values:

GETPOST

voiceCallerIdLookupboolean

Optional

Whether we should look up the caller's caller-ID name from the CNAM database (additional charges apply). Can be: true or false.

smsUrlstring<uri>

Optional

The URL we should call when the phone number receives an incoming SMS message.

smsMethodenum<http-method>

Optional

The HTTP method we should use to call sms_url. Can be: GET or POST.

Possible values:

GETPOST

smsFallbackUrlstring<uri>

Optional

The URL that we should call when an error occurs while retrieving or executing the TwiML from sms_url.

smsFallbackMethodenum<http-method>

Optional

The HTTP method we should use to call sms_fallback_url. Can be: GET or POST.

Possible values:

GETPOST

smsStatusCallbackstring<uri>

Optional

Same as message_status_callback: The URL we should call using a POST method to send status information about SMS messages sent by the application. Deprecated, included for backwards compatibility.

messageStatusCallbackstring<uri>

Optional

The URL we should call using a POST method to send message status information to your application.

publicApplicationConnectEnabledboolean

Optional

Whether to allow other Twilio accounts to dial this applicaton using Dial verb. Can be: true or false.

Set the VoiceUrl and SmsUrl on an Application to 'http://myapp.com/awesome'

1// Download the helper library from https://www.twilio.com/docs/node/install
2const twilio = require("twilio"); // Or, for ESM: import twilio from "twilio";
3
4// Find your Account SID and Auth Token at twilio.com/console
5// and set the environment variables. See http://twil.io/secure
6const accountSid = process.env.TWILIO_ACCOUNT_SID;
7const authToken = process.env.TWILIO_AUTH_TOKEN;
8const client = twilio(accountSid, authToken);
9
10async function updateApplication() {
11  const application = await client
12    .applications("AP2a0747eba6abf96b7e3c3ff0b4530f6e")
13    .update({
14      smsUrl: "http://demo.twilio.com/docs/sms.xml",
15      voiceUrl: "http://demo.twilio.com/docs/voice.xml",
16    });
17
18  console.log(application.accountSid);
19}
20
21updateApplication();

Response

Note: This shows the raw API response from Twilio. Responses from SDKs (Java, Python, etc.) may look a little different.

1{
2  "account_sid": "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
3  "api_version": "2010-04-01",
4  "date_created": "Mon, 22 Aug 2011 20:59:45 +0000",
5  "date_updated": "Tue, 18 Aug 2015 16:48:57 +0000",
6  "friendly_name": "Application Friendly Name",
7  "message_status_callback": "http://www.example.com/sms-status-callback",
8  "sid": "AP2a0747eba6abf96b7e3c3ff0b4530f6e",
9  "sms_fallback_method": "GET",
10  "sms_fallback_url": "http://www.example.com/sms-fallback",
11  "sms_method": "GET",
12  "sms_status_callback": "http://www.example.com/sms-status-callback",
13  "sms_url": "http://demo.twilio.com/docs/sms.xml",
14  "status_callback": "http://example.com",
15  "status_callback_method": "GET",
16  "uri": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Applications/APaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.json",
17  "voice_caller_id_lookup": false,
18  "voice_fallback_method": "GET",
19  "voice_fallback_url": "http://www.example.com/voice-callback",
20  "voice_method": "GET",
21  "voice_url": "http://demo.twilio.com/docs/voice.xml",
22  "public_application_connect_enabled": true
23}

Delete an Application resource

DELETE https://api.twilio.com/2010-04-01/Accounts/{AccountSid}/Applications/{Sid}.json

Delete this application. If this application's sid is assigned to any IncomingPhoneNumber resources as a VoiceApplicationSid or SmsApplicationSid it will be removed.

If successful, Twilio will return an HTTP 204 response with no body.

Path parameters

Property nameTypeRequiredPIIDescription

accountSidSID<AC>

required

The SID of the Account that created the Application resources to delete.

Pattern: ^AC[0-9a-fA-F]{32}$Min length: 34Max length: 34

sidSID<AP>

required

The Twilio-provided string that uniquely identifies the Application resource to delete.

Pattern: ^AP[0-9a-fA-F]{32}$Min length: 34Max length: 34

Delete an Application

1// Download the helper library from https://www.twilio.com/docs/node/install
2const twilio = require("twilio"); // Or, for ESM: import twilio from "twilio";
3
4// Find your Account SID and Auth Token at twilio.com/console
5// and set the environment variables. See http://twil.io/secure
6const accountSid = process.env.TWILIO_ACCOUNT_SID;
7const authToken = process.env.TWILIO_AUTH_TOKEN;
8const client = twilio(accountSid, authToken);
9
10async function deleteApplication() {
11  await client.applications("APXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX").remove();
12}
13
14deleteApplication();