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How to connect Explorium to Claude

Connect Claude Web, Desktop and Cowork to Explorium MCP. Find prospects matching series a startups, enrich lead record with company data, and more using natural language, with authentication handled for you.

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Explorium is a REST API platform for company and prospect discovery and enrichment. Use it to find, match, and enrich leads with authoritative firmographic and usage data.

10 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 Explorium account to Claude via Composio Connect, enabling it to find prospects matching Series A startups, enrich lead record with company data, list top-fit accounts for outbound campaign, 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 Explorium 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 Explorium account

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

For example, ask Claude to:

  • "Find prospects matching Series A startups"
  • "Enrich lead record with company data"
  • "List top-fit accounts for outbound campaign"

It will prompt you to authenticate and authorize access.

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

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

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

Troubleshooting

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

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

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

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

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

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

3. Why does the Explorium authorization link not work?

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

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

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

The Explorium connection can expire or lose permission.

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

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

Claude can manage the Explorium connection for you.

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

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

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

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

Supported Tools

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

Autocomplete Filter Values

Find normalized values for Explorium business and prospect search filters, including company names, job titles, industries, locations, skills, and interests.

Enrich Business Firmographics

Enrich 1-50 Explorium business IDs with company firmographics.

Get Audience Stats

Return aggregate distributions and total counts for either a business or prospect filter set before fetching records.

Get Credit Balance

Return the connected Explorium company's allocated and remaining credits and trial or paid account type.

Get Job Status

Get detailed status, timing, credit usage, errors, and downloadable CSV result metadata for one existing Explorium job.

List Jobs

List existing Explorium asynchronous jobs, optionally filtered by lifecycle status, and return their IDs for detailed monitoring.

Match Businesses

Resolve 1-50 business names, domains, URLs, or LinkedIn URLs to Explorium business IDs while preserving input order.

Match Prospects

Resolve 1-50 people from names, employers, email, phone, LinkedIn URL, or Explorium business ID to prospect IDs while preserving input order.

Search Businesses

Search Explorium businesses with structured filters and cursor pagination.

Search Prospects

Search Explorium prospects with strict person and employer filters, returning one cursor-paginated page.

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

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

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