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How to connect Modem MCP to Claude

Connect Claude Web, Desktop and Cowork to Modem MCP. Search customer feedback for refund complaints, start durable agent conversation about onboarding, and more using natural language, with authentication handled for you.

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Modem MCP is a platform for organizing and indexing customer feedback, topics, people, and companies. It synthesizes feedback and provides durable agent conversation support for structured insights.

15 Tools

Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your Modem account to Claude via Composio Connect, enabling it to search customer feedback for refund complaints, start durable agent conversation about onboarding, create topic for recurring payment issues, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

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Connecting Modem to Claude Web, Desktop, and Cowork

Two ways to add the Composio connector. Pick whichever you prefer.

1. Add with one click

Click the button. Claude opens with the Composio connector filled in. Click Add, then go to step 2.

Add to Claude

Add manually

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

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

2. 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 Web, Desktop, and Cowork

3. Connect your Modem account

Back in Claude, ask it to connect to Modem or give it any Modem-related task.

For example, ask Claude to:

  • "Search customer feedback for refund complaints"
  • "Start durable agent conversation about onboarding"
  • "Create topic for recurring payment issues"

It will prompt you to authenticate and authorize access.

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

What is the Modem Claude Connector, and what's possible with it?

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

Troubleshooting

1. Why does Claude not use the Composio connector for Modem?

The connector can show as connected, but Claude must use it in each Modem conversation.

  • Click + at the lower left of the chat, or type /.
  • Hover Connectors.
  • Turn on Composio.
  • Ask Claude to connect to Modem again.

2. Why does Claude show an MCP server error before Modem connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for Modem.

  • Check that the connector URL is https://connect.composio.dev/mcp.
  • Connectors run from Anthropic's cloud, so your device network is usually not the problem.
  • Add the connector again from Customize > Connectors, then ask Claude to connect Modem.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the Modem authorization link not work?

The Composio connector is one server. Your Modem account connects separately when Claude asks for it.

  • If the browser does not open, or the link expires, ask Claude to retry the Modem connection.
  • Composio creates a fresh Modem authorization link.
  • Open that link in your browser and finish the Modem sign-in.

4. Why do Modem actions fail after they worked before?

The Modem connection can expire or lose permission.

  • Ask Claude to inspect the Modem connection.
  • If the connection is unhealthy, disconnect it when Claude prompts you.
  • Reconnect the Modem account and retry the action.
  • If Claude shows a permission prompt, approve it before Claude changes data in Modem.
  • If the action still fails with a permission error, check that the connected account has that permission in Modem itself.

5. How do I switch to a different Modem account?

Claude can manage the Modem connection for you.

  • Ask Claude to disconnect or delete the current Modem account.
  • Ask Claude to connect Modem again.
  • Open the new Composio authorization link for Modem.
  • Sign in with the other Modem account in the browser.
  • After the account connects, ask Claude to retry the Modem task.

6. Why is my Modem connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your Modem connection works in Claude Web, Desktop, and Cowork.

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If Modem tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
  • On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect Modem.
TOOLS

Supported Tools

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

Add people to company

Associate one or more people with a company.

Bulk update topics

Update multiple topics at once (e.

Create companies

Create one or more companies in the organization.

Merge companies

Merge one or more source companies into a target company.

Merge people

Merge one or more source people into a target person.

Merge topics

Merge one or more source topics into a target topic.

Modem agent cancel run

Cooperatively cancel one exact durable Modem agent run.

Modem agent get run

Get the current status and terminal result of a durable Modem agent run.

Modem agent invoke

Start a durable Modem agent conversation.

Modem agent send message

Start a durable follow-up turn in an existing MCP conversation.

Modem skills

Skills that teach you how to use THIS Modem MCP server's tools.

Search modem

Answer a natural-language question about your Modem data and get matching rows back.

Update companies

Update fields on one or more existing companies.

Update people

Update fields on one or more existing people.

Update topic

Update a single topic (priority, lifecycle state, archived status, issue type, or keywords).

FRAMEWORKS

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ChatGPT logo

ChatGPT

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Hermes logo

Hermes

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Atomic Agent logo

Atomic Agent

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FAQ

Frequently asked questions

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

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

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