Twilio

Twilio

Access the Twilio API with managed OAuth authentication. Send SMS messages, make voice calls, manage phone numbers, and work with Twilio resources.

Quick Start

# List all accounts
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://gateway.maton.ai/twilio/2010-04-01/Accounts.json')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Base URL

https://gateway.maton.ai/twilio/2010-04-01/Accounts/{AccountSid}/{resource}.json

The gateway proxies requests to api.twilio.com and automatically injects your OAuth token.

Important: Most Twilio endpoints require your Account SID in the path. You can get your Account SID from the /Accounts.json endpoint.

Authentication

All requests require the Maton API key in the Authorization header:

Authorization: Bearer $MATON_API_KEY

Environment Variable: Set your API key as MATON_API_KEY:

export MATON_API_KEY="YOUR_API_KEY"

Getting Your API Key

1. Sign in or create an account at maton.ai
2. Go to maton.ai/settings
3. Copy your API key

Connection Management

Manage your Twilio OAuth connections at https://ctrl.maton.ai.

List Connections

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections?app=twilio&status=ACTIVE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Create Connection

python <<'EOF'
import urllib.request, os, json
data = json.dumps({'app': 'twilio'}).encode()
req = urllib.request.Request('https://ctrl.maton.ai/connections', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Content-Type', 'application/json')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Get Connection

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections/{connection_id}')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Response:

{
  "connection": {
    "connection_id": "ebe566b1-3eaf-4926-bc92-0d8d47445f12",
    "status": "ACTIVE",
    "creation_time": "2026-02-09T23:18:44.243582Z",
    "last_updated_time": "2026-02-09T23:19:55.176687Z",
    "url": "https://connect.maton.ai/?session_token=...",
    "app": "twilio",
    "metadata": {}
  }
}

Open the returned url in a browser to complete OAuth authorization.

Delete Connection

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections/{connection_id}', method='DELETE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Specifying Connection

If you have multiple Twilio connections, specify which one to use with the Maton-Connection header:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://gateway.maton.ai/twilio/2010-04-01/Accounts.json')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Maton-Connection', 'ebe566b1-3eaf-4926-bc92-0d8d47445f12')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

If omitted, the gateway uses the default (oldest) active connection.

API Reference

Accounts

List Accounts

GET /twilio/2010-04-01/Accounts.json

Response:

{
  "accounts": [
    {
      "sid": "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
      "friendly_name": "My first Twilio account",
      "status": "active",
      "date_created": "Mon, 09 Feb 2026 20:19:55 +0000",
      "date_updated": "Mon, 09 Feb 2026 20:20:05 +0000"
    }
  ]
}

Get Account

GET /twilio/2010-04-01/Accounts/{AccountSid}.json

Messages (SMS/MMS)

List Messages

GET /twilio/2010-04-01/Accounts/{AccountSid}/Messages.json

Query Parameters:

• PageSize - Number of results per page (default: 50)
• To - Filter by recipient phone number
• From - Filter by sender phone number
• DateSent - Filter by date sent

Response:

{
  "messages": [
    {
      "sid": "SMxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
      "body": "Hello!",
      "from": "+15551234567",
      "to": "+15559876543",
      "status": "delivered",
      "date_sent": "Mon, 09 Feb 2026 21:00:00 +0000"
    }
  ],
  "page": 0,
  "page_size": 50
}

Get Message

GET /twilio/2010-04-01/Accounts/{AccountSid}/Messages/{MessageSid}.json

Send Message

POST /twilio/2010-04-01/Accounts/{AccountSid}/Messages.json
Content-Type: application/x-www-form-urlencoded

To=+15559876543&From=+15551234567&Body=Hello%20from%20Twilio!

Required Parameters:

• To - Recipient phone number (E.164 format)
• From - Twilio phone number or messaging service SID
• Body - Message text (max 1600 characters)

Optional Parameters:

• MessagingServiceSid - Use instead of From for message routing
• MediaUrl - URL of media to send (MMS)
• StatusCallback - Webhook URL for status updates

Response:

{
  "sid": "SMxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
  "body": "Hello from Twilio!",
  "from": "+15551234567",
  "to": "+15559876543",
  "status": "queued",
  "date_created": "Mon, 09 Feb 2026 21:00:00 +0000"
}

Update Message (Redact)

POST /twilio/2010-04-01/Accounts/{AccountSid}/Messages/{MessageSid}.json
Content-Type: application/x-www-form-urlencoded

Body=

Setting Body to empty string redacts the message content.

Delete Message

DELETE /twilio/2010-04-01/Accounts/{AccountSid}/Messages/{MessageSid}.json

Returns 204 No Content on success.

Calls (Voice)

List Calls

GET /twilio/2010-04-01/Accounts/{AccountSid}/Calls.json

Query Parameters:

• PageSize - Results per page
• Status - Filter by status (queued, ringing, in-progress, completed, etc.)
• To - Filter by recipient
• From - Filter by caller

Response:

{
  "calls": [
    {
      "sid": "CAxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
      "from": "+15551234567",
      "to": "+15559876543",
      "status": "completed",
      "duration": "60",
      "direction": "outbound-api"
    }
  ],
  "page": 0,
  "page_size": 50
}

Get Call

GET /twilio/2010-04-01/Accounts/{AccountSid}/Calls/{CallSid}.json

Make Call

POST /twilio/2010-04-01/Accounts/{AccountSid}/Calls.json
Content-Type: application/x-www-form-urlencoded

To=+15559876543&From=+15551234567&Url=https://example.com/twiml

Required Parameters:

• To - Recipient phone number
• From - Twilio phone number
• Url - TwiML application URL

Optional Parameters:

• StatusCallback - Webhook URL for call status updates
• StatusCallbackEvent - Events to receive (initiated, ringing, answered, completed)
• Timeout - Seconds to wait for answer (default: 60)
• Record - Set to true to record the call

Update Call

POST /twilio/2010-04-01/Accounts/{AccountSid}/Calls/{CallSid}.json
Content-Type: application/x-www-form-urlencoded

Status=completed

Use Status=completed to end an in-progress call.

Delete Call

DELETE /twilio/2010-04-01/Accounts/{AccountSid}/Calls/{CallSid}.json

Phone Numbers

List Incoming Phone Numbers

GET /twilio/2010-04-01/Accounts/{AccountSid}/IncomingPhoneNumbers.json

Response:

{
  "incoming_phone_numbers": [
    {
      "sid": "PNxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
      "phone_number": "+15551234567",
      "friendly_name": "My Number",
      "capabilities": {
        "voice": true,
        "sms": true,
        "mms": true
      }
    }
  ]
}

Get Phone Number

GET /twilio/2010-04-01/Accounts/{AccountSid}/IncomingPhoneNumbers/{PhoneNumberSid}.json

Update Phone Number

POST /twilio/2010-04-01/Accounts/{AccountSid}/IncomingPhoneNumbers/{PhoneNumberSid}.json
Content-Type: application/x-www-form-urlencoded

FriendlyName=Updated%20Name&VoiceUrl=https://example.com/voice

Delete Phone Number

DELETE /twilio/2010-04-01/Accounts/{AccountSid}/IncomingPhoneNumbers/{PhoneNumberSid}.json

Applications

List Applications

GET /twilio/2010-04-01/Accounts/{AccountSid}/Applications.json

Response:

{
  "applications": [
    {
      "sid": "APxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
      "friendly_name": "My App",
      "voice_url": "https://example.com/voice",
      "sms_url": "https://example.com/sms"
    }
  ]
}

Get Application

GET /twilio/2010-04-01/Accounts/{AccountSid}/Applications/{ApplicationSid}.json

Create Application

POST /twilio/2010-04-01/Accounts/{AccountSid}/Applications.json
Content-Type: application/x-www-form-urlencoded

FriendlyName=My%20App&VoiceUrl=https://example.com/voice

Response:

{
  "sid": "APxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
  "friendly_name": "My App",
  "voice_url": "https://example.com/voice",
  "date_created": "Tue, 10 Feb 2026 00:20:15 +0000"
}

Update Application

POST /twilio/2010-04-01/Accounts/{AccountSid}/Applications/{ApplicationSid}.json
Content-Type: application/x-www-form-urlencoded

FriendlyName=Updated%20App%20Name

Delete Application

DELETE /twilio/2010-04-01/Accounts/{AccountSid}/Applications/{ApplicationSid}.json

Returns 204 No Content on success.

Queues

List Queues

GET /twilio/2010-04-01/Accounts/{AccountSid}/Queues.json

Response:

{
  "queues": [
    {
      "sid": "QUxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
      "friendly_name": "Support Queue",
      "current_size": 0,
      "max_size": 1000,
      "average_wait_time": 0
    }
  ]
}

Create Queue

POST /twilio/2010-04-01/Accounts/{AccountSid}/Queues.json
Content-Type: application/x-www-form-urlencoded

FriendlyName=Support%20Queue&MaxSize=100

Update Queue

POST /twilio/2010-04-01/Accounts/{AccountSid}/Queues/{QueueSid}.json
Content-Type: application/x-www-form-urlencoded

FriendlyName=Updated%20Queue%20Name

Delete Queue

DELETE /twilio/2010-04-01/Accounts/{AccountSid}/Queues/{QueueSid}.json

Addresses

List Addresses

GET /twilio/2010-04-01/Accounts/{AccountSid}/Addresses.json

Create Address

POST /twilio/2010-04-01/Accounts/{AccountSid}/Addresses.json
Content-Type: application/x-www-form-urlencoded

FriendlyName=Office&Street=123%20Main%20St&City=San%20Francisco&Region=CA&PostalCode=94105&IsoCountry=US&CustomerName=Acme%20Inc

Usage Records

List Usage Records

GET /twilio/2010-04-01/Accounts/{AccountSid}/Usage/Records.json

Query Parameters:

• Category - Filter by usage category (calls, sms, etc.)
• StartDate - Start date (YYYY-MM-DD)
• EndDate - End date (YYYY-MM-DD)

Response:

{
  "usage_records": [
    {
      "category": "sms",
      "description": "SMS Messages",
      "count": "100",
      "price": "0.75",
      "start_date": "2026-02-01",
      "end_date": "2026-02-28"
    }
  ]
}

Pagination

Twilio uses page-based pagination:

GET /twilio/2010-04-01/Accounts/{AccountSid}/Messages.json?PageSize=50&Page=0

Parameters:

• PageSize - Results per page (default: 50)
• Page - Page number (0-indexed)

Response includes:

{
  "messages": [...],
  "page": 0,
  "page_size": 50,
  "first_page_uri": "/2010-04-01/Accounts/{AccountSid}/Messages.json?PageSize=50&Page=0",
  "next_page_uri": "/2010-04-01/Accounts/{AccountSid}/Messages.json?PageSize=50&Page=1",
  "previous_page_uri": null
}

Use next_page_uri to fetch the next page of results.

Code Examples

JavaScript

const response = await fetch(
  'https://gateway.maton.ai/twilio/2010-04-01/Accounts.json',
  {
    headers: {
      'Authorization': `Bearer ${process.env.MATON_API_KEY}`
    }
  }
);
const data = await response.json();
const accountSid = data.accounts[0].sid;
console.log(`Account SID: ${accountSid}`);

Python

import os
import requests

# Get account SID
response = requests.get(
    'https://gateway.maton.ai/twilio/2010-04-01/Accounts.json',
    headers={'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}'}
)
account_sid = response.json()['accounts'][0]['sid']
print(f"Account SID: {account_sid}")

Python (Send SMS)

import os
import requests

account_sid = 'ACxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'

response = requests.post(
    f'https://gateway.maton.ai/twilio/2010-04-01/Accounts/{account_sid}/Messages.json',
    headers={
        'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}',
        'Content-Type': 'application/x-www-form-urlencoded'
    },
    data={
        'To': '+15559876543',
        'From': '+15551234567',
        'Body': 'Hello from Python!'
    }
)
message = response.json()
print(f"Message SID: {message['sid']}")
print(f"Status: {message['status']}")

Python (Make Call)

import os
import requests

account_sid = 'ACxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'

response = requests.post(
    f'https://gateway.maton.ai/twilio/2010-04-01/Accounts/{account_sid}/Calls.json',
    headers={
        'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}',
        'Content-Type': 'application/x-www-form-urlencoded'
    },
    data={
        'To': '+15559876543',
        'From': '+15551234567',
        'Url': 'https://demo.twilio.com/docs/voice.xml'
    }
)
call = response.json()
print(f"Call SID: {call['sid']}")
print(f"Status: {call['status']}")

Notes

• All endpoints require the /2010-04-01/ API version prefix
• Most endpoints require your Account SID in the path
• Request bodies use application/x-www-form-urlencoded format (not JSON)
• Phone numbers must be in E.164 format (+15551234567)
• SIDs are unique identifiers:
  • Account SIDs start with AC
  • Message SIDs start with SM (SMS) or MM (MMS)
  • Call SIDs start with CA
  • Phone Number SIDs start with PN
  • Application SIDs start with AP
  • Queue SIDs start with QU
• POST is used for both creating and updating resources
• DELETE returns 204 No Content on success
• IMPORTANT: When piping curl output to jq or other commands, environment variables like $MATON_API_KEY may not expand correctly in some shell environments

Error Handling

Twilio error responses include:

{
  "code": 20404,
  "message": "The requested resource was not found",
  "more_info": "https://www.twilio.com/docs/errors/20404",
  "status": 404
}

Troubleshooting: Invalid API Key

When you receive an "Invalid API key" error, ALWAYS follow these steps before concluding there is an issue:

1. Check that the MATON_API_KEY environment variable is set:

echo $MATON_API_KEY

2. Verify the API key is valid by listing connections:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Resources

• Twilio API Overview
• Messages API
• Calls API
• Phone Numbers API
• Applications API
• Usage Records API