How to connect Customer.io MCP to Claude Cowork

Connect Claude Cowork to Customer.io MCP. Add user to onboarding campaign now, create broadcast for new feature announcement, and more using natural language, with authentication handled for you.

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Customer.io MCP is a behavioral messaging platform for managing people, campaigns, broadcasts, and workspace configuration. Use it to automate targeted lifecycle messaging, personalize communications, and orchestrate campaigns at scale.

8 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 Customer.io account to Cowork via Composio Connect, enabling it to add user to onboarding campaign now, create broadcast for new feature announcement, update person attributes and trigger campaign, and more such actions on your behalf without compromising your account security.

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Connecting Customer.io 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 Customer.io account

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

For example, ask Cowork to:

  • "Add user to onboarding campaign now"
  • "Create broadcast for new feature announcement"
  • "Update person attributes and trigger campaign"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Cowork, and your Customer.io 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 Customer.io through MCP without you sharing account credentials directly with the agent.

What is the Customer.io MCP server, and what's possible with it?

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

TOOLS

Supported Tools

Every Customer.io MCP action and event your agent gets out of the box.

Cio auth status

Show the active authentication state.

Cio delete api

Delete a resource via the Customer.

Cio prime

Print LLM-ready instructions for using the Customer.

Cio read api

Read from the Customer.

Cio schema

Introspect the Customer.

Cio skills list

List available agent skills — task-specific instruction manuals maintained by Customer.

Cio skills read

Read the full content of a specific agent skill.

Cio write api

Write to the Customer.

FRAMEWORKS

How to build Customer.io MCP Agent with another framework

FAQ

Frequently asked questions

With a standalone Customer.io MCP server, the agents and LLMs can only access a fixed set of Customer.io tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Customer.io 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 Customer.io tools.

Yes, absolutely. You can configure which Customer.io 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 Customer.io data and credentials are handled as safely as possible.

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Managed auth, hosted MCP servers, and every Customer.io MCP tool your agent needs.Free to start.

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