How to integrate Customerio MCP with ChatGPT Work

Connect ChatGPT Work to Customerio MCP. List all segments in your workspace, get delivery metrics for last week's emails, and more using natural language, with authentication handled for you.

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Customer.io is a customer engagement platform for targeted messaging across email, SMS, and push. Easily automate, segment, and track communications with your audience.

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How to integrate Customerio MCP with ChatGPT Work

ChatGPT Work is an agent inside ChatGPT built for your most ambitious work. It takes action across your apps and files, stays with a project for hours, and turns a goal into finished materials like sheets, slides, and docs - not just answers.

In this guide, I will explain the easiest and most secure way to connect your Customerio account to ChatGPT Work via Composio Connect, so it can list all segments in your workspace, get delivery metrics for last week's emails, show all people in vip customer segment through natural language commands without ever putting your account credentials at risk.

Also integrate Customerio with

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Why use Composio over default connectors?

  • Apps with read and write access. Default connectors mostly can read your data. Composio's Customerio integration lets ChatGPT Work take actions like creating drafts, sending updates, labeling records, and more.
  • 1,000+ SaaS toolkits out of the box. Composio gives you instant access to a vast catalog of pre-built connectors, from Gmail and Slack to Notion, Linear, and Salesforce.
  • One MCP server for every app. Connect any of your applications on demand through a single endpoint, rather than juggling a separate server for each app.
  • Smart, context-aware tool loading. Unlike traditional MCP servers that dump every available tool into the LLM context window, Composio searches for and loads only the tools relevant to the task at hand.
  • Cross-app automation. Chain actions across multiple apps in a single run - fetch a thread, summarize it in Notion, and post highlights to Slack without leaving the conversation.

Prerequisites

  • A ChatGPT account with access to ChatGPT Work (rolling out across Pro, Enterprise, Edu, Plus, and Business plans). We will use the ChatGPT desktop app, which is available on every plan.
  • Access to the Customerio workspace you want to connect.
  • Composio MCP.

Note: Composio connects through OAuth. You will be asked to sign in and approve specific permissions. Review the permission screen carefully if you are using a work account.

Step-by-step: Connect Customerio to ChatGPT Work

1. Open the MCP settings

In ChatGPT Work, go to Settings and open the Plugins section. Inside the Plugins page, click the MCP tab.

ChatGPT Work settings showing the Plugins page with the MCP tab selected

2. Add the server

Click Add server. In the Name field enter Composio, for Type select Streamable HTTP, and in the URL field paste the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
ChatGPT Work Add server dialog with the name Composio, type Streamable HTTP, and the Composio MCP URL

Then click Save. The Composio server now appears in your MCP plugins list.

ChatGPT Work Plugins page showing the Composio MCP server added to the list

3. Authenticate

Click Authenticate, log in via Composio, and click Allow access to authorize ChatGPT Work to use your Composio account.

Composio login and Allow access screen for ChatGPT Work MCP setup

4. Start using Composio

That is it - Composio tools are now available in ChatGPT Work. Ask it to work with your Customerio account and it will run the actions you authorize.

What you can do after connecting Customerio

  • List all segments in your workspace
  • Get delivery metrics for last week's emails
  • Show all people in VIP customer segment
  • Retrieve all webhooks configured in workspace

Security + privacy notes (important)

  • Use least-privilege access: Only grant permissions you actually need.
  • Review OAuth permissions before approving: Make sure requested scopes match what you expect Composio and ChatGPT Work to do.
  • Keep write actions human-reviewed: For actions like sending messages, creating labels, or editing drafts, keep manual confirmation enabled.
  • Be careful with sensitive data: Avoid using this setup with highly sensitive information unless allowed by your personal, company, or client policies.
TOOLS

Supported Tools

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

Add Person to Group

Tool to add people to a group in Customer.

Create Profile Alias

Tool to create an alias to merge multiple profiles in Customer.

Suppress Customer Profile

Suppress a customer profile to permanently delete it and prevent re-adding with the same identifier.

Get Integrations

Tool to retrieve a list of integrations in your workspace.

Get Messages

Tool to retrieve a list of messages sent from your workspace.

Get Segment Details

Tool to retrieve details of a specific segment.

Get Segment Membership

Tool to retrieve people in a specific segment.

Get Segments

Tool to retrieve a list of segments in your workspace.

Get Trigger

Retrieves details about a specific API-triggered broadcast, including trigger ID, campaign ID, creation timestamp, recipient filter criteria, and personalization data.

Get Broadcast Triggers

Retrieve all API trigger instances for a specific broadcast/campaign.

Get Customer.io Workspace Webhooks

Retrieves all reporting webhook configurations from the Customer.

Identify Person

Tool to identify a person and assign traits to them in Customer.

List Collections

Tool to list all Collections metadata.

List IP Addresses

Tool to retrieve the list of IP addresses used by Customer.

List Newsletters

Tool to list all newsletters.

List Snippets

Tool to list all snippets in your workspace.

List Transactional Messages

Lists all transactional message templates in your Customer.

Send Batch CDP Calls

Send multiple CDP calls (identify, track, page, screen, group, alias) in a single batch request.

Track Event

Tool to send an event associated with a person in Customer.

Track Page View

Tool to track page view events for website visitors in Customer.

Track Screen View

Track mobile screen views in Customer.

Trigger Broadcast

Manually trigger a Customer.

Unsubscribe from Delivery

Tool to handle custom unsubscribe requests for email deliveries in Customer.

FRAMEWORKS

How to build Customerio MCP Agent with another framework

Antigravity logo

Antigravity

Use Customerio MCP with Antigravity

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Customerio MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Customerio MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Customerio MCP with Claude Code

Claude Cowork logo

Claude Cowork

Use Customerio MCP with Claude Cowork

Codex logo

Codex

Use Customerio MCP with Codex

OpenClaw logo

OpenClaw

Use Customerio MCP with OpenClaw

Hermes logo

Hermes

Use Customerio MCP with Hermes

Google ADK logo

Google ADK

Use Customerio MCP with Google ADK

LangChain logo

LangChain

Use Customerio MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Customerio MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Customerio MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Customerio MCP with LlamaIndex

CrewAI logo

CrewAI

Use Customerio MCP with CrewAI

Pydantic AI logo

Pydantic AI

Use Customerio MCP with Pydantic AI

AutoGen logo

AutoGen

Use Customerio MCP with AutoGen

FAQ

Frequently asked questions

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

Yes, you can. ChatGPT Work 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 Customerio tools.

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

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