ClickSend

Access the ClickSend API with managed authentication. Send SMS, MMS, and voice messages, manage contacts and lists, and track message delivery.

Quick Start

# Get account info
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://gateway.maton.ai/clicksend/v3/account')
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/clicksend/{native-api-path}

Replace {native-api-path} with the actual ClickSend API endpoint path. The gateway proxies requests to rest.clicksend.com and automatically injects your authentication.

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 ClickSend 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=clicksend&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': 'clicksend'}).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": "37beee67-29f7-43b6-b0b2-5f0f7a5d6440",
    "status": "ACTIVE",
    "creation_time": "2026-02-10T10:04:12.418030Z",
    "last_updated_time": "2026-02-10T10:06:17.059090Z",
    "url": "https://connect.maton.ai/?session_token=...",
    "app": "clicksend",
    "metadata": {}
  }
}

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 ClickSend 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/clicksend/v3/account')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Maton-Connection', '37beee67-29f7-43b6-b0b2-5f0f7a5d6440')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

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

API Reference

Response Format

All ClickSend API responses follow this structure:

{
  "http_code": 200,
  "response_code": "SUCCESS",
  "response_msg": "Description of the result",
  "data": { ... }
}

---

Account

Get Account

GET /clicksend/v3/account

Response:

{
  "http_code": 200,
  "response_code": "SUCCESS",
  "response_msg": "Here's your account",
  "data": {
    "user_id": 672721,
    "username": "user@example.com",
    "user_email": "user@example.com",
    "balance": "2.005718",
    "user_phone": "+18019234886",
    "user_first_name": "John",
    "user_last_name": "Doe",
    "country": "US",
    "default_country_sms": "US",
    "timezone": "America/Chicago",
    "_currency": {
      "currency_name_short": "USD",
      "currency_prefix_d": "$"
    }
  }
}

---

SMS

Send SMS

POST /clicksend/v3/sms/send
Content-Type: application/json

{
  "messages": [
    {
      "to": "+15551234567",
      "body": "Hello from ClickSend!",
      "source": "api"
    }
  ]
}

Parameters:

Field	Type	Description
to	string	Recipient phone number (E.164 format)
body	string	SMS message content
source	string	Source identifier (e.g., "api", "sdk")
from	string	Sender ID (optional)
schedule	int	Unix timestamp for scheduled send (optional)
custom_string	string	Custom reference (optional)

Get SMS Price

POST /clicksend/v3/sms/price
Content-Type: application/json

{
  "messages": [
    {
      "to": "+15551234567",
      "body": "Test message",
      "source": "api"
    }
  ]
}

SMS History

GET /clicksend/v3/sms/history

Query Parameters:

Parameter	Description
date_from	Unix timestamp for start date
date_to	Unix timestamp for end date
page	Page number (default: 1)
limit	Results per page (default: 15)

Inbound SMS

GET /clicksend/v3/sms/inbound

SMS Receipts (Delivery Reports)

GET /clicksend/v3/sms/receipts

Cancel Scheduled SMS

PUT /clicksend/v3/sms/{message_id}/cancel

Cancel All Scheduled SMS

PUT /clicksend/v3/sms/cancel-all

---

SMS Templates

List Templates

GET /clicksend/v3/sms/templates

Response:

{
  "http_code": 200,
  "response_code": "SUCCESS",
  "response_msg": "Here are your templates.",
  "data": {
    "total": 1,
    "per_page": 15,
    "current_page": 1,
    "data": [
      {
        "template_id": 632497,
        "body": "Hello {name}, this is a test message.",
        "template_name": "Test Template"
      }
    ]
  }
}

Create Template

POST /clicksend/v3/sms/templates
Content-Type: application/json

{
  "template_name": "Welcome Message",
  "body": "Hello {name}, welcome to our service!"
}

Update Template

PUT /clicksend/v3/sms/templates/{template_id}
Content-Type: application/json

{
  "template_name": "Updated Template",
  "body": "Updated message content"
}

Delete Template

DELETE /clicksend/v3/sms/templates/{template_id}

---

MMS

Send MMS

POST /clicksend/v3/mms/send
Content-Type: application/json

{
  "messages": [
    {
      "to": "+15551234567",
      "body": "Check out this image!",
      "media_file": "https://example.com/image.jpg",
      "source": "api"
    }
  ]
}

MMS History

GET /clicksend/v3/mms/history

Get MMS Price

POST /clicksend/v3/mms/price
Content-Type: application/json

{
  "messages": [...]
}

MMS Receipts

GET /clicksend/v3/mms/receipts

---

Voice

Send Voice Message

POST /clicksend/v3/voice/send
Content-Type: application/json

{
  "messages": [
    {
      "to": "+15551234567",
      "body": "Hello, this is a voice message.",
      "voice": "female",
      "lang": "en-us",
      "source": "api"
    }
  ]
}

Voice Parameters:

Field	Description
to	Recipient phone number
body	Text to be spoken
voice	Voice gender: male or female
lang	Language code (e.g., en-us, en-gb, de-de)
schedule	Unix timestamp for scheduled call
require_input	Require keypad input (0-1)
machine_detection	Detect answering machine (0-1)

Available Languages

GET /clicksend/v3/voice/lang

Returns list of supported languages with codes and available genders.

Voice History

GET /clicksend/v3/voice/history

Note: Requires voice access enabled on account.

Get Voice Price

POST /clicksend/v3/voice/price

Cancel Voice Message

PUT /clicksend/v3/voice/{message_id}/cancel

---

Contact Lists

List All Lists

GET /clicksend/v3/lists

Response:

{
  "http_code": 200,
  "response_code": "SUCCESS",
  "response_msg": "Here are your contact lists.",
  "data": {
    "total": 2,
    "data": [
      {
        "list_id": 3555277,
        "list_name": "Opt-Out List",
        "_contacts_count": 0
      },
      {
        "list_id": 3555278,
        "list_name": "Example List",
        "_contacts_count": 10
      }
    ]
  }
}

Get List

GET /clicksend/v3/lists/{list_id}

Create List

POST /clicksend/v3/lists
Content-Type: application/json

{
  "list_name": "My New List"
}

Update List

PUT /clicksend/v3/lists/{list_id}
Content-Type: application/json

{
  "list_name": "Updated List Name"
}

Delete List

DELETE /clicksend/v3/lists/{list_id}

Remove Duplicates

PUT /clicksend/v3/lists/{list_id}/remove-duplicates

---

Contacts

List Contacts in a List

GET /clicksend/v3/lists/{list_id}/contacts

Query Parameters:

Parameter	Description
page	Page number
limit	Results per page
updated_after	Filter contacts updated after timestamp

Get Contact

GET /clicksend/v3/lists/{list_id}/contacts/{contact_id}

Response:

{
  "http_code": 200,
  "response_code": "SUCCESS",
  "data": {
    "contact_id": 1581565666,
    "list_id": 3555278,
    "phone_number": "+18019234886",
    "first_name": "John",
    "last_name": "Doe",
    "email": "john@example.com",
    "custom_1": "",
    "custom_2": "",
    "custom_3": "",
    "custom_4": "",
    "organization_name": "",
    "address_city": "",
    "address_state": "",
    "address_country": "US"
  }
}

Create Contact

POST /clicksend/v3/lists/{list_id}/contacts
Content-Type: application/json

{
  "phone_number": "+15551234567",
  "first_name": "John",
  "last_name": "Doe",
  "email": "john@example.com"
}

Contact Fields:

Field	Description
phone_number	Phone number (E.164 format)
first_name	First name
last_name	Last name
email	Email address
fax_number	Fax number
organization_name	Company name
custom_1 - custom_4	Custom fields
address_line_1, address_line_2	Address
address_city, address_state, address_postal_code, address_country	Address components

Update Contact

PUT /clicksend/v3/lists/{list_id}/contacts/{contact_id}
Content-Type: application/json

{
  "first_name": "Jane",
  "last_name": "Smith"
}

Delete Contact

DELETE /clicksend/v3/lists/{list_id}/contacts/{contact_id}

Copy Contact to Another List

PUT /clicksend/v3/lists/{from_list_id}/contacts/{contact_id}/copy/{to_list_id}

Transfer Contact to Another List

PUT /clicksend/v3/lists/{from_list_id}/contacts/{contact_id}/transfer/{to_list_id}

---

Email Addresses

List Verified Email Addresses

GET /clicksend/v3/email/addresses

Add Email Address

POST /clicksend/v3/email/addresses
Content-Type: application/json

{
  "email_address": "sender@example.com"
}

Delete Email Address

DELETE /clicksend/v3/email/addresses/{email_address_id}

---

Utility Endpoints

List Countries

GET /clicksend/v3/countries

Returns list of all supported countries with codes.

---

Pagination

ClickSend uses page-based pagination:

GET /clicksend/v3/lists?page=2&limit=50

Response includes:

{
  "data": {
    "total": 100,
    "per_page": 50,
    "current_page": 2,
    "last_page": 2,
    "next_page_url": null,
    "prev_page_url": "...?page=1",
    "from": 51,
    "to": 100,
    "data": [...]
  }
}

Parameters:

• page - Page number (default: 1)
• limit - Results per page (default: 15)

Code Examples

JavaScript

const response = await fetch(
  'https://gateway.maton.ai/clicksend/v3/sms/send',
  {
    method: 'POST',
    headers: {
      'Authorization': `Bearer ${process.env.MATON_API_KEY}`,
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({
      messages: [
        {
          to: '+15551234567',
          body: 'Hello from ClickSend!',
          source: 'api'
        }
      ]
    })
  }
);
const data = await response.json();
console.log(data);

Python

import os
import requests

response = requests.post(
    'https://gateway.maton.ai/clicksend/v3/sms/send',
    headers={
        'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}',
        'Content-Type': 'application/json'
    },
    json={
        'messages': [
            {
                'to': '+15551234567',
                'body': 'Hello from ClickSend!',
                'source': 'api'
            }
        ]
    }
)
data = response.json()
print(f"Status: {data['response_code']}")

Notes

• Phone numbers must be in E.164 format (e.g., +15551234567)
• All timestamps are Unix timestamps (seconds since epoch)
• Use source field to identify your application in analytics
• Templates support placeholders like {name}, {custom_1}, etc.
• SMS messages over 160 characters are split into multiple segments
• Voice access requires account-level permissions
• IMPORTANT: When using curl commands, use curl -g when URLs contain brackets to disable glob parsing
• 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

Status	Meaning
200	Success
400	Bad request
401	Unauthorized - invalid credentials
403	Forbidden - insufficient permissions
404	Resource not found
429	Rate limited
500	Internal server error

Response codes:

• SUCCESS - Operation completed successfully
• FORBIDDEN - Access denied to resource
• BAD_REQUEST - Invalid request parameters
• INVALID_RECIPIENT - Invalid phone number

Troubleshooting: API Key Issues

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

Troubleshooting: Invalid App Name

1. Ensure your URL path starts with clicksend. For example:

• Correct: https://gateway.maton.ai/clicksend/v3/account
• Incorrect: https://gateway.maton.ai/v3/account

Resources

• ClickSend Developer Portal
• ClickSend REST API v3 Documentation
• ClickSend PHP SDK
• ClickSend Help Center
• Maton Community
• Maton Support