# How to connect Crunchbase to Claude

```json
{
  "title": "How to connect Crunchbase to Claude",
  "toolkit": "Crunchbase",
  "toolkit_slug": "crunchbase",
  "framework": "Claude Cowork",
  "framework_slug": "claude-cowork",
  "url": "https://composio.dev/toolkits/crunchbase/framework/claude-cowork",
  "markdown_url": "https://composio.dev/toolkits/crunchbase/framework/claude-cowork.md",
  "updated_at": "2026-10-22T05:31:13.413Z"
}
```

## 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

- [ChatGPT](https://composio.dev/toolkits/crunchbase/framework/chatgpt)
- [Hermes](https://composio.dev/toolkits/crunchbase/framework/hermes-agent)
- [Atomic Agent](https://composio.dev/toolkits/crunchbase/framework/atomic-agent)

## Connect Crunchbase to Claude Cowork

### 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](https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=Composio&connectorUrl=https%3A%2F%2Fconnect.composio.dev%2Fmcp)
### Add manually
In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.
Click Add custom connector and paste in the Composio MCP server URL:

```bash
https://connect.composio.dev/mcp
```

## What is the Crunchbase MCP server, 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.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `CRUNCHBASE_AUTOCOMPLETE_ENTITIES` | Autocomplete Entities | Suggest Crunchbase entity identifiers and permalinks matching text, optionally limited to documented or key-entitled collections. |
| `CRUNCHBASE_GET_ENTITY` | Get Entity | Get one Crunchbase entity by collection and UUID or permalink, selecting licensed fields and optionally embedded relationship cards. Access depends on the package entitlements of the connected API key. |
| `CRUNCHBASE_GET_FIELDS_METADATA` | Get Fields Metadata | Return the connected Crunchbase key's licensed collections and field definitions, optionally filtered by collection. Filter by collection when the full licensed metadata exceeds the safe serialized response limit. |
| `CRUNCHBASE_GET_OPENAPI_SPECIFICATION` | Get OpenAPI Specification | Return the Crunchbase REST v4 OpenAPI surface licensed to the connected key in JSON or YAML. By default, return a compact operation and schema index; request full mode only when the complete document is needed. |
| `CRUNCHBASE_LIST_DELETED_ENTITIES` | List Deleted Entities | List Crunchbase deletion records across supported collections or for one collection, with forward or backward keyset pagination. If a nonempty page omits the boundary UUID, pagination_warning reports that continuation is unavailable instead of claiming the page is terminal. |
| `CRUNCHBASE_LIST_ENTITY_CARD` | List Entity Card | List one Crunchbase entity relationship card with selected licensed fields and one-page forward or backward keyset pagination. Access depends on the package entitlements of the connected API key. If a nonempty page omits the boundary UUID or returns a different card key, pagination_warning reports that continuation is unavailable. |
| `CRUNCHBASE_SEARCH_ENTITIES` | Search Entities | Search one Crunchbase collection using licensed fields, up to 25 AND-combined predicates, ordering, and one-page keyset pagination. Pages can change while traversing; deduplicate entities by UUID when completeness matters. If a nonempty page omits the boundary UUID, pagination_warning reports that continuation is unavailable. |

## Supported Triggers

None listed.

## 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.

## Creating MCP Server - Stand-alone vs Composio SDK

The Crunchbase MCP server connects Claude Web, Desktop, and Cowork to your Crunchbase account through Composio. Once connected, Claude can use the available Crunchbase tools and triggers to complete tasks on your behalf.

## Complete Code

None listed.

## How to build Crunchbase MCP Agent with another framework

- [ChatGPT](https://composio.dev/toolkits/crunchbase/framework/chatgpt)
- [Hermes](https://composio.dev/toolkits/crunchbase/framework/hermes-agent)
- [Atomic Agent](https://composio.dev/toolkits/crunchbase/framework/atomic-agent)

## Related Toolkits

- [Firecrawl](https://composio.dev/toolkits/firecrawl) - Firecrawl automates large-scale web crawling and data extraction. It helps organizations efficiently gather, index, and analyze content from online sources.
- [Tavily](https://composio.dev/toolkits/tavily) - Tavily offers powerful search and data retrieval from documents, databases, and the web. It helps teams locate and filter information instantly, saving hours on research.
- [Exa](https://composio.dev/toolkits/exa) - Exa is a data extraction and search platform for gathering and analyzing information from websites, APIs, or databases. It helps teams quickly surface insights and automate data-driven workflows.
- [Serpapi](https://composio.dev/toolkits/serpapi) - SerpApi is a real-time API for structured search engine results. It lets you automate SERP data collection, parsing, and analysis for SEO and research.
- [Peopledatalabs](https://composio.dev/toolkits/peopledatalabs) - Peopledatalabs delivers B2B data enrichment and identity resolution APIs. Supercharge your apps with accurate, up-to-date business and contact data.
- [Snowflake](https://composio.dev/toolkits/snowflake) - Snowflake is a cloud data warehouse built for elastic scaling, secure data sharing, and fast SQL analytics across major clouds.
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- [Ahrefs MCP](https://composio.dev/toolkits/ahrefs_mcp) - Ahrefs MCP is Ahrefs' hosted MCP server for SEO data and insights. Use it to access backlinks, organic metrics, keyword research, and competitor analysis.
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- [Baremetrics](https://composio.dev/toolkits/baremetrics) - Baremetrics is a subscription analytics platform for recurring-revenue businesses. It helps teams track MRR, churn, customers, and revenue trends in one place.
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- [Bread & Butter](https://composio.dev/toolkits/bread_butter) - Bread & Butter is a lead-intelligence and identity platform for website visitor tracking, user profiles, attribution, authentication, and conversion workflows. It helps teams understand who is visiting, where leads come from, and how users convert.
- [Bright Data MCP](https://composio.dev/toolkits/brightdata_mcp) - Bright Data MCP is an AI-powered web scraping and data collection platform. Instantly access public web data in real time with advanced scraping tools.
- [Browseai](https://composio.dev/toolkits/browseai) - Browseai is a web automation and data extraction platform that turns any website into an API. It's perfect for monitoring websites and retrieving structured data without manual scraping.
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- [Chameleon](https://composio.dev/toolkits/chameleon) - Chameleon is a product adoption platform for building in-app experiences, managing customer data, and analyzing user engagement. It helps teams improve onboarding, feature discovery, and product adoption with targeted user experiences.
- [Chartly](https://composio.dev/toolkits/chartly) - Chartly renders Chart.js configurations as PNG or SVG images and creates permanent chart URLs for sharing and embedding. Share and embed charts easily with stable image URLs and downloadable vector graphics.

## Frequently Asked Questions

### What are the differences in Tool Router MCP and Crunchbase MCP?

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.

### Can I use Tool Router MCP with Claude Cowork?

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.

### Can I manage the permissions and scopes for Crunchbase while using Tool Router?

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.

### How safe is my data with Composio Tool Router?

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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