How to connect ClickSend to Claude Cowork

Cowork is Anthropic's AI agent for knowledge work. Think of it as Claude Code for everything else. It works autonomously with your computer, local files, and applications to accomplish complex tasks. This guide walks you through the easiest and most secure way to connect your ClickSend account to Cowork via Composio Connect, enabling it to send SMS campaign to all event attendees, add a new contact to ClickSend list, retrieve delivery status for your last SMS, and more such actions on your behalf without compromising your account security.

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ClickSend is a cloud-based SMS and email marketing platform for businesses. It streamlines communication by enabling quick message delivery and contact management.

183 Tools

Introduction

Cowork is Anthropic's AI agent for knowledge work. Think of it as Claude Code for everything else. It works autonomously with your computer, local files, and applications to accomplish complex tasks.

This guide walks you through the easiest and most secure way to connect your ClickSend account to Cowork via Composio Connect, enabling it to send SMS campaign to all event attendees, add a new contact to ClickSend list, retrieve delivery status for your last SMS, and more such actions on your behalf without compromising your account security.

Also integrate ClickSend with

Connecting ClickSend to Claude Cowork

1. Open Customize

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

2. Add the Composio MCP server

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

3. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Cowork

4. Connect your ClickSend account

Back in Cowork, ask the agent to connect to ClickSend or give it any ClickSend-related task.

For example, ask Cowork to:

  • "Send SMS campaign to all event attendees"
  • "Add a new contact to ClickSend list"
  • "Retrieve delivery status for your last SMS"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Cowork, and your ClickSend account is ready to use.

What is Claude Cowork?

Claude Cowork is Anthropic's agent for general knowledge work. It can use your computer, files, and connected applications to complete longer-running tasks across your work tools.

With Composio Connect, Cowork can securely access apps like ClickSend through MCP without you sharing account credentials directly with the agent.

What is the ClickSend MCP server, and what's possible with it?

The ClickSend MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your ClickSend account. It provides structured and secure access so your agent can perform ClickSend operations on your behalf.

TOOLS

Supported Tools

Every ClickSend action and event your agent gets out of the box.

Get Account Usage by Subaccount

Tool to retrieve account usage statistics by subaccount for a specific month and year.

Send Account Activation Token

Tool to send an account activation token for verification.

Verify New Account

Tool to verify a new ClickSend account using an activation token.

Calculate Post Letter Price

Tool to calculate the price for sending post letters without actually sending them.

Calculate SMS Campaign Price

Tool to calculate the price for an SMS campaign before sending.

Create Email Delivery Receipt Automation

Tool to create an email delivery receipt automation rule in ClickSend.

Create Inbound Fax Automation

Tool to create a new inbound fax automation rule in ClickSend.

Create Fax Delivery Receipt Automation

Tool to create a fax delivery receipt automation rule in ClickSend.

Create Inbound SMS Automation

Tool to create a new inbound SMS automation rule in ClickSend.

Create SMS Delivery Receipt Automation

Tool to create an SMS delivery receipt automation rule in ClickSend.

Create Voice Delivery Receipt Automation

Tool to create a voice delivery receipt automation rule in ClickSend.

Create Delivery Issue

Tool to create a delivery issue report in ClickSend.

Create Allowed Email Address

Tool to create an allowed email address for sending transactional emails.

Get Allowed Email Addresses

Tool to retrieve list of allowed email addresses for sending transactional emails.

Create Email Template from Master

Tool to create a new email template from an existing master template.

Add Fax Delivery Receipt Webhook

Tool to add a webhook URL for fax delivery receipt notifications.

Create Contact List

Tool to create a new contact list in your ClickSend account.

Create Contact in List

Tool to create a new contact in a specific contact list in your ClickSend account.

Send MMS Messages

Tool to send MMS messages with media attachments to recipients.

Send Direct Mail Campaign

Tool to create and send a direct mail campaign to specified locations.

Detect Address from PDF or String

Tool to detect and convert addresses to standard format from PDF or address string.

Send Post Letter

Tool to send physical letters through ClickSend's postal service.

Create Post Return Address

Tool to create a new post return address for ClickSend postal services.

Get All Post Return Addresses

Tool to retrieve a list of all post return addresses from ClickSend account with pagination.

Create and Send SMS Campaign

Tool to create and send an SMS campaign to a contact list.

Create Email-to-SMS Allowed Address

Tool to create an allowed email address for email-to-SMS conversion.

Get SMS Email-to-SMS Allowed Address

Tool to retrieve a specific allowed email address for SMS email-to-SMS by its ID.

Update Email-to-SMS Allowed Address

Tool to update a specific allowed email address for email-to-SMS.

Delete SMS Email-to-SMS Allowed Address

Tool to delete a specific allowed email address from SMS email-to-SMS settings.

Create Email to SMS Stripped String Rule

Tool to create an email to SMS stripped string rule.

Create Test Inbound SMS

Tool to create a test inbound SMS webhook configuration in ClickSend.

Add SMS Delivery Receipt Webhook

Tool to add a test SMS delivery receipt webhook in ClickSend.

Send SMS Messages

Tool to send one or more SMS messages via ClickSend.

Create SMS Template

Tool to create a new SMS template for reuse in campaigns.

Create Subaccount

Tool to create a new subaccount in ClickSend with access permissions and credentials.

Delete Email Delivery Receipt Automation

Tool to delete an email delivery receipt automation rule.

Delete Inbound SMS Automation

Tool to delete an inbound SMS automation rule.

Delete Contact List

Tool to delete a specific contact list from your ClickSend account.

Delete Contact from List

Tool to delete a specific contact from a contact list in your ClickSend account.

Remove Opted Out Contacts from List

Tool to remove all opted out contacts from a contact list using an opt out list reference.

Cancel Scheduled SMS

Tool to cancel a scheduled SMS message by updating its status to cancelled.

Delete SMS Template

Tool to delete an SMS template by its template ID.

Delete Subaccount

Tool to delete a specific subaccount from the system.

Get Email Campaign

Tool to retrieve details of a specific email campaign by its ID.

Delete Email Delivery Receipt Automation

Tool to delete an email delivery receipt automation rule.

Get Email Delivery Receipt Automation

Tool to retrieve a specific email delivery receipt automation rule by its ID.

Update Email Delivery Receipt Automation

Tool to update an email delivery receipt automation rule in ClickSend.

Delete Email Template

Tool to delete an email template by its template ID.

Get Email Template

Tool to retrieve a specific user email template by its template ID.

Update Email Template

Tool to update an existing email template in ClickSend.

Export Post Letters History

Tool to export post letter history to a downloadable CSV file.

Delete Fax Delivery Receipt Automation

Tool to delete a fax delivery receipt automation rule.

Get Fax Delivery Receipt Automation

Tool to retrieve a specific fax delivery receipt automation rule by its ID.

Update Fax Delivery Receipt Automation

Tool to update fax delivery receipt automation.

Update Inbound Fax Automation

Tool to update an existing inbound fax automation rule in ClickSend.

Get Fax Receipt by Message ID

Tool to retrieve a single fax delivery receipt using the message identifier.

Mark Fax Receipts as Read

Tool to mark fax delivery receipts as read in ClickSend.

Get Account Information

Tool to retrieve authenticated user's account information.

Get All Email Delivery Receipt Automations

Tool to retrieve all email delivery receipt automation rules configured in your ClickSend account.

Get All Inbound Fax Automations

Tool to retrieve all inbound fax automation rules configured in your ClickSend account.

Get All Fax Delivery Receipt Automations

Tool to retrieve all fax delivery receipt automation rules configured in your ClickSend account.

Get All Inbound SMS Automations

Tool to retrieve all inbound SMS automation rules configured in your ClickSend account.

Get All SMS Delivery Receipt Automations

Tool to retrieve all SMS delivery receipt automation rules configured in your ClickSend account.

Get All Voice Delivery Receipt Automations

Tool to retrieve all voice delivery receipt automation rules configured in your ClickSend account.

Get Contact Suggestions

Tool to retrieve contact suggestions from your ClickSend account.

Get All Countries

Tool to retrieve all available country codes that ClickSend supports.

Get All Delivery Issues

Tool to retrieve all delivery issues from your ClickSend account.

Get All Master Email Templates

Tool to retrieve all master email templates.

Get All Master Email Template Categories

Tool to retrieve all master email template categories.

Get All User Email Templates

Tool to retrieve all user email templates.

Get Fax Delivery Receipts

Tool to retrieve fax delivery receipts from your ClickSend account.

Get All Contact Lists

Tool to retrieve all contact lists from ClickSend account with pagination support.

Get Specific Contact List

Tool to retrieve a specific contact list by its list ID.

Get All Contacts in List

Tool to retrieve all contacts from a specific contact list in your ClickSend account with pagination and filtering support.

Get Specific Contact

Tool to retrieve a specific contact from a contact list in your ClickSend account.

Export Contacts List

Tool to export contacts from a specific list to a CSV file.

Import Contacts to List

Tool to import contacts to a contact list from a publicly accessible file URL.

Preview CSV Import for Contact List

Tool to preview the first row of a CSV import file for a contact list in ClickSend.

Get List Import Fields

Tool to retrieve acceptable import fields for a contact list in ClickSend.

Export MMS History

Tool to export MMS message history with filtering, ordering, and pagination.

Get MMS Delivery Receipts

Tool to retrieve all MMS delivery receipts from your ClickSend account.

Get Dedicated Numbers

Tool to retrieve all available dedicated numbers associated with your ClickSend account.

Search Dedicated Numbers by Country

Tool to search for available dedicated numbers by country code.

Search Direct Mail Locations

Tool to search for direct mail locations in a specific country.

Get Post Letters History

Tool to retrieve all post letters history with pagination.

Get Country Pricing

Tool to retrieve pricing information for a specific country.

Get Referral Accounts

Tool to retrieve a list of referral accounts with pagination support.

Get Reseller Settings

Tool to retrieve reseller settings and account information.

Get Reseller Accounts

Tool to retrieve a list of reseller accounts with pagination support.

Get SMS Campaign

Tool to retrieve details of a specific SMS campaign by its ID.

Get SMS Campaigns List

Tool to retrieve all SMS campaigns with pagination and statistics breakdown.

Get Email to SMS Stripped String Rules List

Tool to retrieve the list of email to sms stripped string rules with pagination support.

Get SMS History

Tool to retrieve sent SMS message history with filtering and pagination.

Get Inbound SMS Messages

Tool to retrieve inbound SMS messages sent to your account.

Get SMS Delivery Receipts

Tool to retrieve SMS delivery receipts from your ClickSend account.

Get All SMS Templates

Tool to retrieve all SMS templates from ClickSend account with pagination and filtering support.

Get SMS Statistics

Tool to retrieve SMS messaging statistics for your ClickSend account.

Get Voice Statistics

Tool to retrieve voice messaging statistics for your ClickSend account.

Get All Subaccounts

Tool to retrieve all subaccounts from ClickSend account with pagination support.

Get Specific Subaccount

Tool to retrieve detailed information about a specific subaccount by its ID.

Get Supported Timezones

Tool to retrieve supported list of timezones.

Get Voice Languages

Tool to retrieve all available voice languages for text-to-speech.

List Countries

Tool to retrieve the list of countries with IDs for global sending.

Copy Contact to Another List

Tool to copy a contact from one list to another list.

Transfer Contact Between Lists

Tool to transfer a contact from one list to another in your ClickSend account.

Mark SMS Receipts as Read

Tool to mark SMS delivery receipts as read in ClickSend.

Mark Voice Receipts as Read

Tool to mark voice delivery receipts as read in ClickSend.

Get Master Email Template Category

Tool to retrieve a specific master email template category by its ID.

Get Master Email Template

Tool to retrieve a specific master email template by its template ID.

Get Master Email Templates in Category

Tool to retrieve all master email templates within a specific category.

Update MMS Campaign

Tool to update an existing MMS campaign with new parameters.

Cancel MMS Campaign

Tool to cancel a scheduled MMS campaign in ClickSend.

Get MMS Campaigns

Tool to retrieve all MMS campaigns with pagination and filtering support.

Calculate MMS Campaign Price

Tool to calculate the price for an MMS campaign before sending.

Send MMS Campaign

Tool to create and send an MMS campaign to a contact list with multimedia content.

Export MMS History

Tool to export all MMS history to a file.

Get MMS History

Tool to retrieve all MMS message history with filtering and pagination.

Calculate MMS Price

Tool to calculate the price for sending MMS messages without actually sending them.

Mark MMS Receipts as Read

Tool to mark MMS delivery receipts as read in ClickSend.

Buy Dedicated Number

Tool to purchase a dedicated phone number from ClickSend.

Delete Post Return Address

Tool to delete a specific post return address from the system.

Get Post Return Address

Tool to retrieve a specific post return address by its unique identifier.

Update Post Return Address

Tool to update an existing post return address in ClickSend.

Upload File

Tool to upload and optionally convert files for use with ClickSend messaging services.

Forgot Password

Tool to initiate password recovery for a ClickSend account.

Forgot Username

Tool to retrieve forgotten username by providing registered email or phone number.

Get Recharge Packages

Tool to retrieve all available recharge packages from ClickSend.

Purchase Recharge Package

Tool to purchase a recharge package by package ID.

Get Recharge Transaction by ID

Tool to retrieve details of a specific recharge transaction by transaction ID.

Get All Recharge Transactions

Tool to retrieve all recharge transactions from ClickSend account with pagination support.

Search Contact Lists

Tool to search contact lists in ClickSend account with pagination support.

Send Email Verification Token

Tool to send a verification email containing an activation token to a registered email address.

Cancel SMS Campaign

Tool to cancel a scheduled SMS campaign in ClickSend.

Cancel All Scheduled SMS

Tool to cancel all scheduled SMS messages in ClickSend.

Delete SMS Delivery Receipt Automation

Tool to delete an SMS delivery receipt automation rule.

Get SMS Delivery Receipt Automation

Tool to retrieve a specific SMS delivery receipt automation rule by its ID.

Update SMS Delivery Receipt Automation

Tool to update an SMS delivery receipt automation rule in ClickSend.

Delete Email to SMS Stripped String Rule

Tool to delete an email to SMS stripped string rule from the account.

Get Email to SMS Stripped String Rule

Tool to retrieve an email to SMS stripped string rule by its ID.

Update Email to SMS Stripped String Rule

Tool to update an email to SMS stripped string rule.

Export SMS History

Tool to export all SMS history to a file.

Get SMS History

Tool to retrieve all SMS message history with filtering and pagination.

Delete Inbound SMS Automation

Tool to delete an inbound SMS automation rule.

Get Inbound SMS Automation

Tool to retrieve a specific inbound SMS automation rule by its ID.

Update Inbound SMS Automation

Tool to update an existing inbound SMS automation rule in ClickSend.

Mark Inbound SMS as Read by Message ID

Tool to mark a specific inbound SMS message as read in ClickSend.

Mark Inbound SMS as Read

Tool to mark inbound SMS messages as read in ClickSend.

Calculate SMS Price

Tool to calculate the price for sending SMS messages without actually sending them.

Get SMS Receipt by Message ID

Tool to retrieve a single SMS delivery receipt using the message identifier.

Mark SMS Delivery Receipts as Read

Tool to mark SMS delivery receipts as read in ClickSend.

Delete SMS Template

Tool to delete an SMS template by its template ID.

Update SMS Template

Tool to update an existing SMS template in ClickSend.

Delete Specific Allowed Email Address

Tool to delete a specific allowed email address from the account.

Get Specific Allowed Email Address

Tool to retrieve a specific allowed email address by its ID.

Regenerate Subaccount API Key

Tool to regenerate API key for a specific subaccount.

Update Account Information

Tool to update authenticated user's account information.

Update Email Delivery Receipt Automation

Tool to update an email delivery receipt automation rule in ClickSend.

Update Inbound Fax Automation

Tool to update an inbound fax automation rule in ClickSend.

Update Fax Delivery Receipt Automation

Tool to update a fax delivery receipt automation rule in ClickSend.

Update Inbound SMS Automation

Tool to update an existing inbound SMS automation rule in ClickSend.

Update SMS Delivery Receipt Automation

Tool to update an SMS delivery receipt automation rule in ClickSend.

Update Voice Delivery Receipt Automation

Tool to update a voice delivery receipt automation rule in ClickSend.

Update Contact List

Tool to update the name of a specific contact list in your ClickSend account.

Update Contact in List

Tool to update a specific contact in a contact list in your ClickSend account.

Get Recharge Credit Card Info

Tool to retrieve stored credit card payment information in tokenized form.

Update Recharge Credit Card Info

Tool to update credit card payment information for account recharge.

Update Reseller Settings

Tool to update reseller account settings and configuration.

Update SMS Campaign

Tool to update an existing SMS campaign.

Update Stripped String

Tool to update an email to SMS stripped string rule.

Update SMS Template

Tool to update an existing SMS template by its template ID.

Update Subaccount

Tool to update a specific subaccount's details and permissions in ClickSend.

Upload File

Tool to upload files to ClickSend for use in messaging campaigns.

Agree to User Countries Rules

Tool to agree on rules and regulations for selected countries in Global Sending.

Get User Countries

Tool to retrieve the list of selected countries for Global Sending.

Select User Countries

Tool to select countries for Global SMS/MMS sending.

Verify Allowed Email Address

Tool to verify an email address using the activation token sent to it.

Verify Forgot Password

Tool to verify forgot password request and reset user password.

Cancel All Scheduled Voice Messages

Tool to cancel all scheduled voice messages in ClickSend.

Delete Voice Receipt Automation

Tool to delete a voice delivery receipt automation rule.

Get Voice Delivery Receipt Automation

Tool to retrieve a specific voice delivery receipt automation rule by its ID.

Update Voice Delivery Receipt Automation

Tool to update a voice delivery receipt automation rule in ClickSend.

Export Voice History

Tool to export all voice history to a file.

Mark Voice Delivery Receipts as Read

Tool to mark voice delivery receipts as read in ClickSend.

FAQ

Frequently asked questions

With a standalone ClickSend MCP server, the agents and LLMs can only access a fixed set of ClickSend tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from ClickSend and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Claude Cowork fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right ClickSend tools.

Yes, absolutely. You can configure which ClickSend scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your ClickSend data and credentials are handled as safely as possible.

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