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How to connect Userlist to Claude

Connect Claude Web, Desktop and Cowork to Userlist MCP. Remove company record after account closure, link user to new company profile, and more using natural language, with authentication handled for you.

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Userlist is a full-stack email automation platform built for SaaS companies. It lets you send targeted campaigns and behavior-based messages to engage your users.

2 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 Userlist account to Claude via Composio Connect, enabling it to remove company record after account closure, link user to new company profile, update user-company relationship after team change, 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 Userlist 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 Userlist account

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

For example, ask Claude to:

  • "Remove company record after account closure"
  • "Link user to new company profile"
  • "Update user-company relationship after team change"

It will prompt you to authenticate and authorize access.

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

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

The Userlist MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Userlist account. It provides structured and secure access to your Userlist audience and company data, so your agent can perform actions like managing user-company relationships and deleting companies from your SaaS CRM automatically on your behalf.

  • Automated company deletion: Instantly remove companies from your Userlist account by simply providing their unique identifiers to your agent.
  • User-company relationship management: Allow your agent to create or update relationships between users and companies, ensuring your CRM data stays up to date with every interaction.
  • Bulk data cleanup: Direct your agent to handle large-scale removal of outdated or duplicate companies, streamlining your user and company lists effortlessly.
  • SaaS customer lifecycle automation: Enable your agent to keep your customer records in sync as users join or leave companies, helping you automate onboarding and offboarding workflows.

Troubleshooting

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

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

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

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

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

  • 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 Userlist.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the Userlist authorization link not work?

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

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

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

The Userlist connection can expire or lose permission.

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

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

Claude can manage the Userlist connection for you.

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

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

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

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If Userlist 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 Userlist.
TOOLS

Supported Tools

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

Delete Company from Userlist

Tool to delete a company from Userlist.

Push User-Company Relationship

Tool to create or update a relationship between a user and a company in Userlist.

FRAMEWORKS

How to build Userlist MCP Agent with another framework

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Userlist MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Userlist MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Userlist MCP with Claude Code

Codex logo

Codex

Use Userlist MCP with Codex

OpenClaw logo

OpenClaw

Use Userlist MCP with OpenClaw

Hermes logo

Hermes

Use Userlist MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Userlist MCP with Atomic Agent

Google ADK logo

Google ADK

Use Userlist MCP with Google ADK

LangChain logo

LangChain

Use Userlist MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Userlist MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Userlist MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Userlist MCP with LlamaIndex

CrewAI logo

CrewAI

Use Userlist MCP with CrewAI

Pydantic AI logo

Pydantic AI

Use Userlist MCP with Pydantic AI

AutoGen logo

AutoGen

Use Userlist MCP with AutoGen

FAQ

Frequently asked questions

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

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

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