# CredentialList Resource

The **Credential Lists** subresource represents the [Credential List](/docs/voice/sip/api/sip-credentiallist-resource) instances associated with this [Trunk](/docs/sip-trunking/api/trunk-resource). If an `INVITE` is received for a domain with a Credential List, Twilio will challenge the request. Your system will need to authenticate with a username and password. The username and password must be in one of the Credential Lists for the `INVITE` to be accepted.

This API will only allow you to list, add, and remove the Credential Lists associated with your Trunk. To create, remove, or list the Credential Lists in your account, [check out the Credential List reference docs](/docs/voice/sip/api/sip-credentiallist-resource).

## CredentialList Properties

```json
{"type":"object","refName":"trunking.v1.trunk.credential_list","modelName":"trunking_v1_trunk_credential_list","properties":{"account_sid":{"type":"string","minLength":34,"maxLength":34,"pattern":"^AC[0-9a-fA-F]{32}$","nullable":true,"description":"The SID of the [Account](/docs/iam/api/account) that created the CredentialList resource."},"sid":{"type":"string","minLength":34,"maxLength":34,"pattern":"^CL[0-9a-fA-F]{32}$","nullable":true,"description":"The unique string that we created to identify the CredentialList resource."},"trunk_sid":{"type":"string","minLength":34,"maxLength":34,"pattern":"^TK[0-9a-fA-F]{32}$","nullable":true,"description":"The SID of the Trunk the credential list in associated with."},"friendly_name":{"type":"string","nullable":true,"description":"The string that you assigned to describe the resource."},"date_created":{"type":"string","format":"date-time","nullable":true,"description":"The date and time in GMT when the resource was created specified in [RFC 2822](https://www.ietf.org/rfc/rfc2822.txt) format."},"date_updated":{"type":"string","format":"date-time","nullable":true,"description":"The date and time in GMT when the resource was last updated specified in [RFC 2822](https://www.ietf.org/rfc/rfc2822.txt) format."},"url":{"type":"string","format":"uri","nullable":true,"description":"The absolute URL of the resource."}}}
```

## Create a CredentialList resource

`POST https://trunking.twilio.com/v1/Trunks/{TrunkSid}/CredentialLists`

### Path parameters

```json
[{"name":"TrunkSid","in":"path","description":"The SID of the Trunk to associate the credential list with.","schema":{"type":"string","minLength":34,"maxLength":34,"pattern":"^TK[0-9a-fA-F]{32}$"},"required":true}]
```

### Request body parameters

```json
{"schema":{"type":"object","title":"CreateCredentialListRequest","required":["CredentialListSid"],"properties":{"CredentialListSid":{"type":"string","minLength":34,"maxLength":34,"pattern":"^CL[0-9a-fA-F]{32}$","description":"The SID of the [Credential List](/docs/voice/sip/api/sip-credentiallist-resource) that you want to associate with the trunk. Once associated, we will authenticate access to the trunk against this list."}}},"examples":{"create":{"value":{"lang":"json","value":"{\n  \"CredentialListSid\": \"CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"\n}","meta":"","code":"{\n  \"CredentialListSid\": \"CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"\n}","tokens":[["{","#C9D1D9"],"\n  ",["\"CredentialListSid\"","#7EE787"],[":","#C9D1D9"]," ",["\"CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"","#A5D6FF"],"\n",["}","#C9D1D9"]],"annotations":[],"themeName":"github-dark","style":{"color":"#c9d1d9","background":"#0d1117"}}}},"encodingType":"application/x-www-form-urlencoded","conditionalParameterMap":{}}
```

Create Credential List

```js
// Download the helper library from https://www.twilio.com/docs/node/install
const twilio = require("twilio"); // Or, for ESM: import twilio from "twilio";

// Find your Account SID and Auth Token at twilio.com/console
// and set the environment variables. See http://twil.io/secure
const accountSid = process.env.TWILIO_ACCOUNT_SID;
const authToken = process.env.TWILIO_AUTH_TOKEN;
const client = twilio(accountSid, authToken);

async function createCredentialList() {
  const credentialsList = await client.trunking.v1
    .trunks("TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")
    .credentialsLists.create({
      credentialListSid: "CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
    });

  console.log(credentialsList.accountSid);
}

createCredentialList();
```

```python
# Download the helper library from https://www.twilio.com/docs/python/install
import os
from twilio.rest import Client

# Find your Account SID and Auth Token at twilio.com/console
# and set the environment variables. See http://twil.io/secure
account_sid = os.environ["TWILIO_ACCOUNT_SID"]
auth_token = os.environ["TWILIO_AUTH_TOKEN"]
client = Client(account_sid, auth_token)

credentials_list = client.trunking.v1.trunks(
    "TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
).credentials_lists.create(
    credential_list_sid="CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
)

print(credentials_list.account_sid)
```

```csharp
// Install the C# / .NET helper library from twilio.com/docs/csharp/install

using System;
using Twilio;
using Twilio.Rest.Trunking.V1.Trunk;
using System.Threading.Tasks;

class Program {
    public static async Task Main(string[] args) {
        // Find your Account SID and Auth Token at twilio.com/console
        // and set the environment variables. See http://twil.io/secure
        string accountSid = Environment.GetEnvironmentVariable("TWILIO_ACCOUNT_SID");
        string authToken = Environment.GetEnvironmentVariable("TWILIO_AUTH_TOKEN");

        TwilioClient.Init(accountSid, authToken);

        var credentialList = await CredentialListResource.CreateAsync(
            credentialListSid: "CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
            pathTrunkSid: "TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");

        Console.WriteLine(credentialList.AccountSid);
    }
}
```

```java
// Install the Java helper library from twilio.com/docs/java/install

import com.twilio.Twilio;
import com.twilio.rest.trunking.v1.trunk.CredentialList;

public class Example {
    // Find your Account SID and Auth Token at twilio.com/console
    // and set the environment variables. See http://twil.io/secure
    public static final String ACCOUNT_SID = System.getenv("TWILIO_ACCOUNT_SID");
    public static final String AUTH_TOKEN = System.getenv("TWILIO_AUTH_TOKEN");

    public static void main(String[] args) {
        Twilio.init(ACCOUNT_SID, AUTH_TOKEN);
        CredentialList credentialList =
            CredentialList.creator("TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa").create();

        System.out.println(credentialList.getAccountSid());
    }
}
```

```go
// Download the helper library from https://www.twilio.com/docs/go/install
package main

import (
	"fmt"
	"github.com/twilio/twilio-go"
	trunking "github.com/twilio/twilio-go/rest/trunking/v1"
	"os"
)

func main() {
	// Find your Account SID and Auth Token at twilio.com/console
	// and set the environment variables. See http://twil.io/secure
	// Make sure TWILIO_ACCOUNT_SID and TWILIO_AUTH_TOKEN exists in your environment
	client := twilio.NewRestClient()

	params := &trunking.CreateCredentialListParams{}
	params.SetCredentialListSid("CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")

	resp, err := client.TrunkingV1.CreateCredentialList("TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
		params)
	if err != nil {
		fmt.Println(err.Error())
		os.Exit(1)
	} else {
		if resp.AccountSid != nil {
			fmt.Println(*resp.AccountSid)
		} else {
			fmt.Println(resp.AccountSid)
		}
	}
}
```

```php
<?php

// Update the path below to your autoload.php,
// see https://getcomposer.org/doc/01-basic-usage.md
require_once "/path/to/vendor/autoload.php";

use Twilio\Rest\Client;

// Find your Account SID and Auth Token at twilio.com/console
// and set the environment variables. See http://twil.io/secure
$sid = getenv("TWILIO_ACCOUNT_SID");
$token = getenv("TWILIO_AUTH_TOKEN");
$twilio = new Client($sid, $token);

$credentials_list = $twilio->trunking->v1
    ->trunks("TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")
    ->credentialsLists->create(
        "CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" // CredentialListSid
    );

print $credentials_list->accountSid;
```

```ruby
# Download the helper library from https://www.twilio.com/docs/ruby/install
require 'twilio-ruby'

# Find your Account SID and Auth Token at twilio.com/console
# and set the environment variables. See http://twil.io/secure
account_sid = ENV['TWILIO_ACCOUNT_SID']
auth_token = ENV['TWILIO_AUTH_TOKEN']
@client = Twilio::REST::Client.new(account_sid, auth_token)

credentials_list = @client
                   .trunking
                   .v1
                   .trunks('TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa')
                   .credentials_lists
                   .create(credential_list_sid: 'CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa')

puts credentials_list.account_sid
```

```bash
# Install the twilio-cli from https://twil.io/cli

twilio api:trunking:v1:trunks:credential-lists:create \
   --trunk-sid TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \
   --credential-list-sid CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
```

```bash
curl -X POST "https://trunking.twilio.com/v1/Trunks/TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/CredentialLists" \
--data-urlencode "CredentialListSid=CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
-u $TWILIO_ACCOUNT_SID:$TWILIO_AUTH_TOKEN
```

```json
{
  "account_sid": "ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
  "trunk_sid": "TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
  "date_created": "2018-05-02T17:29:30Z",
  "date_updated": "2018-05-02T17:29:30Z",
  "friendly_name": "friendly_name",
  "sid": "CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
  "url": "https://trunking.twilio.com/v1/Trunks/TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/CredentialLists/CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
}
```

## Read multiple CredentialList resources

`GET https://trunking.twilio.com/v1/Trunks/{TrunkSid}/CredentialLists`

### Path parameters

```json
[{"name":"TrunkSid","in":"path","description":"The SID of the Trunk from which to read the credential lists.","schema":{"type":"string","minLength":34,"maxLength":34,"pattern":"^TK[0-9a-fA-F]{32}$"},"required":true}]
```

### Query parameters

```json
[{"name":"PageSize","in":"query","description":"How many resources to return in each list page. The default is 50, and the maximum is 1000.","schema":{"type":"integer","format":"int64","minimum":1,"maximum":1000}},{"name":"Page","in":"query","description":"The page index. This value is simply for client state.","schema":{"type":"integer","minimum":0}},{"name":"PageToken","in":"query","description":"The page token. This is provided by the API.","schema":{"type":"string"}}]
```

Read Credential List

```js
// Download the helper library from https://www.twilio.com/docs/node/install
const twilio = require("twilio"); // Or, for ESM: import twilio from "twilio";

// Find your Account SID and Auth Token at twilio.com/console
// and set the environment variables. See http://twil.io/secure
const accountSid = process.env.TWILIO_ACCOUNT_SID;
const authToken = process.env.TWILIO_AUTH_TOKEN;
const client = twilio(accountSid, authToken);

async function listCredentialList() {
  const credentialsLists = await client.trunking.v1
    .trunks("TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")
    .credentialsLists.list({ limit: 20 });

  credentialsLists.forEach((c) => console.log(c.accountSid));
}

listCredentialList();
```

```python
# Download the helper library from https://www.twilio.com/docs/python/install
import os
from twilio.rest import Client

# Find your Account SID and Auth Token at twilio.com/console
# and set the environment variables. See http://twil.io/secure
account_sid = os.environ["TWILIO_ACCOUNT_SID"]
auth_token = os.environ["TWILIO_AUTH_TOKEN"]
client = Client(account_sid, auth_token)

credentials_lists = client.trunking.v1.trunks(
    "TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
).credentials_lists.list(limit=20)

for record in credentials_lists:
    print(record.account_sid)
```

```csharp
// Install the C# / .NET helper library from twilio.com/docs/csharp/install

using System;
using Twilio;
using Twilio.Rest.Trunking.V1.Trunk;
using System.Threading.Tasks;

class Program {
    public static async Task Main(string[] args) {
        // Find your Account SID and Auth Token at twilio.com/console
        // and set the environment variables. See http://twil.io/secure
        string accountSid = Environment.GetEnvironmentVariable("TWILIO_ACCOUNT_SID");
        string authToken = Environment.GetEnvironmentVariable("TWILIO_AUTH_TOKEN");

        TwilioClient.Init(accountSid, authToken);

        var credentialLists = await CredentialListResource.ReadAsync(
            pathTrunkSid: "TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", limit: 20);

        foreach (var record in credentialLists) {
            Console.WriteLine(record.AccountSid);
        }
    }
}
```

```java
// Install the Java helper library from twilio.com/docs/java/install

import com.twilio.Twilio;
import com.twilio.rest.trunking.v1.trunk.CredentialList;
import com.twilio.base.ResourceSet;

public class Example {
    // Find your Account SID and Auth Token at twilio.com/console
    // and set the environment variables. See http://twil.io/secure
    public static final String ACCOUNT_SID = System.getenv("TWILIO_ACCOUNT_SID");
    public static final String AUTH_TOKEN = System.getenv("TWILIO_AUTH_TOKEN");

    public static void main(String[] args) {
        Twilio.init(ACCOUNT_SID, AUTH_TOKEN);
        ResourceSet<CredentialList> credentialLists =
            CredentialList.reader("TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa").limit(20).read();

        for (CredentialList record : credentialLists) {
            System.out.println(record.getAccountSid());
        }
    }
}
```

```go
// Download the helper library from https://www.twilio.com/docs/go/install
package main

import (
	"fmt"
	"github.com/twilio/twilio-go"
	trunking "github.com/twilio/twilio-go/rest/trunking/v1"
	"os"
)

func main() {
	// Find your Account SID and Auth Token at twilio.com/console
	// and set the environment variables. See http://twil.io/secure
	// Make sure TWILIO_ACCOUNT_SID and TWILIO_AUTH_TOKEN exists in your environment
	client := twilio.NewRestClient()

	params := &trunking.ListCredentialListParams{}
	params.SetLimit(20)

	resp, err := client.TrunkingV1.ListCredentialList("TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
		params)
	if err != nil {
		fmt.Println(err.Error())
		os.Exit(1)
	} else {
		for record := range resp {
			if resp[record].AccountSid != nil {
				fmt.Println(*resp[record].AccountSid)
			} else {
				fmt.Println(resp[record].AccountSid)
			}
		}
	}
}
```

```php
<?php

// Update the path below to your autoload.php,
// see https://getcomposer.org/doc/01-basic-usage.md
require_once "/path/to/vendor/autoload.php";

use Twilio\Rest\Client;

// Find your Account SID and Auth Token at twilio.com/console
// and set the environment variables. See http://twil.io/secure
$sid = getenv("TWILIO_ACCOUNT_SID");
$token = getenv("TWILIO_AUTH_TOKEN");
$twilio = new Client($sid, $token);

$credentialsLists = $twilio->trunking->v1
    ->trunks("TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")
    ->credentialsLists->read(20);

foreach ($credentialsLists as $record) {
    print $record->accountSid;
}
```

```ruby
# Download the helper library from https://www.twilio.com/docs/ruby/install
require 'twilio-ruby'

# Find your Account SID and Auth Token at twilio.com/console
# and set the environment variables. See http://twil.io/secure
account_sid = ENV['TWILIO_ACCOUNT_SID']
auth_token = ENV['TWILIO_AUTH_TOKEN']
@client = Twilio::REST::Client.new(account_sid, auth_token)

credentials_lists = @client
                    .trunking
                    .v1
                    .trunks('TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa')
                    .credentials_lists
                    .list(limit: 20)

credentials_lists.each do |record|
   puts record.account_sid
end
```

```bash
# Install the twilio-cli from https://twil.io/cli

twilio api:trunking:v1:trunks:credential-lists:list \
   --trunk-sid TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
```

```bash
curl -X GET "https://trunking.twilio.com/v1/Trunks/TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/CredentialLists?PageSize=20" \
-u $TWILIO_ACCOUNT_SID:$TWILIO_AUTH_TOKEN
```

```json
{
  "credential_lists": [
    {
      "account_sid": "ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
      "trunk_sid": "TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
      "date_created": "2018-04-27T22:02:11Z",
      "date_updated": "2018-04-27T22:02:11Z",
      "friendly_name": "friendly_name",
      "sid": "CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
      "url": "https://trunking.twilio.com/v1/Trunks/TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/CredentialLists/CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
    }
  ],
  "meta": {
    "page": 0,
    "page_size": 50,
    "first_page_url": "https://trunking.twilio.com/v1/Trunks/TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/CredentialLists?PageSize=50&Page=0",
    "previous_page_url": null,
    "url": "https://trunking.twilio.com/v1/Trunks/TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/CredentialLists?PageSize=50&Page=0",
    "next_page_url": null,
    "key": "credential_lists"
  }
}
```

## Delete a CredentialList resource

`DELETE https://trunking.twilio.com/v1/Trunks/{TrunkSid}/CredentialLists/{Sid}`

### Path parameters

```json
[{"name":"TrunkSid","in":"path","description":"The SID of the Trunk from which to delete the credential list.","schema":{"type":"string","minLength":34,"maxLength":34,"pattern":"^TK[0-9a-fA-F]{32}$"},"required":true},{"name":"Sid","in":"path","description":"The unique string that we created to identify the CredentialList resource to delete.","schema":{"type":"string","minLength":34,"maxLength":34,"pattern":"^CL[0-9a-fA-F]{32}$"},"required":true}]
```

Delete Credential List

```js
// Download the helper library from https://www.twilio.com/docs/node/install
const twilio = require("twilio"); // Or, for ESM: import twilio from "twilio";

// Find your Account SID and Auth Token at twilio.com/console
// and set the environment variables. See http://twil.io/secure
const accountSid = process.env.TWILIO_ACCOUNT_SID;
const authToken = process.env.TWILIO_AUTH_TOKEN;
const client = twilio(accountSid, authToken);

async function deleteCredentialList() {
  await client.trunking.v1
    .trunks("TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")
    .credentialsLists("CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")
    .remove();
}

deleteCredentialList();
```

```python
# Download the helper library from https://www.twilio.com/docs/python/install
import os
from twilio.rest import Client

# Find your Account SID and Auth Token at twilio.com/console
# and set the environment variables. See http://twil.io/secure
account_sid = os.environ["TWILIO_ACCOUNT_SID"]
auth_token = os.environ["TWILIO_AUTH_TOKEN"]
client = Client(account_sid, auth_token)

client.trunking.v1.trunks(
    "TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
).credentials_lists("CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa").delete()
```

```csharp
// Install the C# / .NET helper library from twilio.com/docs/csharp/install

using System;
using Twilio;
using Twilio.Rest.Trunking.V1.Trunk;
using System.Threading.Tasks;

class Program {
    public static async Task Main(string[] args) {
        // Find your Account SID and Auth Token at twilio.com/console
        // and set the environment variables. See http://twil.io/secure
        string accountSid = Environment.GetEnvironmentVariable("TWILIO_ACCOUNT_SID");
        string authToken = Environment.GetEnvironmentVariable("TWILIO_AUTH_TOKEN");

        TwilioClient.Init(accountSid, authToken);

        await CredentialListResource.DeleteAsync(
            pathTrunkSid: "TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
            pathSid: "CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");
    }
}
```

```java
// Install the Java helper library from twilio.com/docs/java/install

import com.twilio.Twilio;
import com.twilio.rest.trunking.v1.trunk.CredentialList;

public class Example {
    // Find your Account SID and Auth Token at twilio.com/console
    // and set the environment variables. See http://twil.io/secure
    public static final String ACCOUNT_SID = System.getenv("TWILIO_ACCOUNT_SID");
    public static final String AUTH_TOKEN = System.getenv("TWILIO_AUTH_TOKEN");

    public static void main(String[] args) {
        Twilio.init(ACCOUNT_SID, AUTH_TOKEN);
        CredentialList.deleter("TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa").delete();
    }
}
```

```go
// Download the helper library from https://www.twilio.com/docs/go/install
package main

import (
	"fmt"
	"github.com/twilio/twilio-go"
	"os"
)

func main() {
	// Find your Account SID and Auth Token at twilio.com/console
	// and set the environment variables. See http://twil.io/secure
	// Make sure TWILIO_ACCOUNT_SID and TWILIO_AUTH_TOKEN exists in your environment
	client := twilio.NewRestClient()

	err := client.TrunkingV1.DeleteCredentialList("TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
		"CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")
	if err != nil {
		fmt.Println(err.Error())
		os.Exit(1)
	}
}
```

```php
<?php

// Update the path below to your autoload.php,
// see https://getcomposer.org/doc/01-basic-usage.md
require_once "/path/to/vendor/autoload.php";

use Twilio\Rest\Client;

// Find your Account SID and Auth Token at twilio.com/console
// and set the environment variables. See http://twil.io/secure
$sid = getenv("TWILIO_ACCOUNT_SID");
$token = getenv("TWILIO_AUTH_TOKEN");
$twilio = new Client($sid, $token);

$twilio->trunking->v1
    ->trunks("TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")
    ->credentialsLists("CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")
    ->delete();
```

```ruby
# Download the helper library from https://www.twilio.com/docs/ruby/install
require 'twilio-ruby'

# Find your Account SID and Auth Token at twilio.com/console
# and set the environment variables. See http://twil.io/secure
account_sid = ENV['TWILIO_ACCOUNT_SID']
auth_token = ENV['TWILIO_AUTH_TOKEN']
@client = Twilio::REST::Client.new(account_sid, auth_token)

@client
  .trunking
  .v1
  .trunks('TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa')
  .credentials_lists('CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa')
  .delete
```

```bash
# Install the twilio-cli from https://twil.io/cli

twilio api:trunking:v1:trunks:credential-lists:remove \
   --trunk-sid TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \
   --sid CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
```

```bash
curl -X DELETE "https://trunking.twilio.com/v1/Trunks/TKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/CredentialLists/CLaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
-u $TWILIO_ACCOUNT_SID:$TWILIO_AUTH_TOKEN
```