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How to connect Crunchbase to Claude

Connect Claude Web, Desktop and Cowork to Crunchbase MCP. Find recent funding rounds for fintech startups, compare funding histories of competing companies, and more using natural language, with authentication handled for you.

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Crunchbase is a business intelligence platform for company, people, funding, and market data. It helps teams research private companies and uncover investment and market insights.

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 Crunchbase account to Claude via Composio Connect, enabling it to find recent funding rounds for fintech startups, compare funding histories of competing companies, research investors backing climate tech companies, 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.

Also integrate Crunchbase with

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Connecting Crunchbase 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 Crunchbase account

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

For example, ask Claude to:

  • "Find recent funding rounds for fintech startups"
  • "Compare funding histories of competing companies"
  • "Research investors backing climate tech companies"

It will prompt you to authenticate and authorize access.

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

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

The Crunchbase MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Crunchbase account. It provides structured and secure access to company, people, funding, financial, prediction, and market insight data, so your agent can search records, retrieve detailed company and people information, explore related records, and review available data fields on your behalf.

  • Company and people research: Have your agent search Crunchbase collections using multiple conditions, then retrieve detailed information about relevant companies, people, and other records.
  • Funding and market analysis: Direct your agent to find and compare records across licensed Crunchbase collections for research on funding activity, financial details, predictions, and market insights.
  • Related record discovery: Let the agent explore related information connected to a company or person, such as associated organizations, funding activity, or other available relationship data.
  • Entity lookup from everyday language: Instruct your agent to find the right Crunchbase company or person record from a name, keyword, or web address before researching it further.
  • Data availability and change tracking: Have your agent review the fields and collections available through your Crunchbase access, or identify records that have been deleted.

Troubleshooting

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

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

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

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

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

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

3. Why does the Crunchbase authorization link not work?

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

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

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

The Crunchbase connection can expire or lose permission.

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

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

Claude can manage the Crunchbase connection for you.

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

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

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

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

Supported Tools

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

Autocomplete Entities

Suggest Crunchbase entity identifiers and permalinks matching text, optionally limited to documented or key-entitled collections.

Get Entity

Get one Crunchbase entity by collection and UUID or permalink, selecting licensed fields and optionally embedded relationship cards.

Get Fields Metadata

Return the connected Crunchbase key's licensed collections and field definitions, optionally filtered by collection.

Get OpenAPI Specification

Return the Crunchbase REST v4 OpenAPI surface licensed to the connected key in JSON or YAML.

List Deleted Entities

List Crunchbase deletion records across supported collections or for one collection, with forward or backward keyset pagination.

List Entity Card

List one Crunchbase entity relationship card with selected licensed fields and one-page forward or backward keyset pagination.

Search Entities

Search one Crunchbase collection using licensed fields, up to 25 AND-combined predicates, ordering, and one-page keyset pagination.

FRAMEWORKS

How to build Crunchbase MCP Agent with another framework

ChatGPT logo

ChatGPT

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Hermes logo

Hermes

Use Crunchbase MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Crunchbase MCP with Atomic Agent

FAQ

Frequently asked questions

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

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

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