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How to connect Lusha to Claude

Connect Claude Web, Desktop and Cowork to Lusha MCP. Enrich prospects from target company list, find verified emails for sales leads, and more using natural language, with authentication handled for you.

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Lusha is a B2B contact enrichment and prospecting platform for verified emails, phone numbers, and company data. It helps sales and go-to-market teams find accurate lead information faster.

7 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 Lusha account to Claude via Composio Connect, enabling it to enrich prospects from target company list, find verified emails for sales leads, get phone numbers for decision-makers, 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 Lusha 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 Lusha account

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

For example, ask Claude to:

  • "Enrich prospects from target company list"
  • "Find verified emails for sales leads"
  • "Get phone numbers for decision-makers"

It will prompt you to authenticate and authorize access.

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

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

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

Troubleshooting

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

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

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

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

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

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

3. Why does the Lusha authorization link not work?

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

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

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

The Lusha connection can expire or lose permission.

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

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

Claude can manage the Lusha connection for you.

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

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

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

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

Supported Tools

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

Create Subscription

Tool to create one or more webhook subscriptions for real-time signal notifications.

Delete Subscriptions

Delete one or more webhook subscriptions by their IDs.

Get Audit Logs

Retrieve audit logs for your account including API calls and webhook deliveries.

Get Audit Log Stats

Retrieve aggregated statistics for audit logs.

Get Subscription

Tool to get details of a specific webhook subscription by ID.

List Subscriptions

List all webhook subscriptions for your account with pagination support.

Update Subscription

Update an existing webhook subscription configuration.

FRAMEWORKS

How to build Lusha MCP Agent with another framework

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Codex

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FAQ

Frequently asked questions

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

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

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