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How to connect Crawlbase to Claude

Connect Claude Web, Desktop and Cowork to Crawlbase MCP. Crawl product pages for pricing changes, extract headlines from competitor blogs, and more using natural language, with authentication handled for you.

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Crawlbase is a web crawling API platform for fetching pages, managing crawler queues, storing crawl results, and tracking usage. It helps developers collect web data at scale without building and maintaining crawler infrastructure.

8 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 Crawlbase account to Claude via Composio Connect, enabling it to crawl product pages for pricing changes, extract headlines from competitor blogs, check crawl queue status today, 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 Crawlbase with

ChatGPTHermesAtomic Agent

Connecting Crawlbase 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 Crawlbase account

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

For example, ask Claude to:

  • "Crawl product pages for pricing changes"
  • "Extract headlines from competitor blogs"
  • "Check crawl queue status today"

It will prompt you to authenticate and authorize access.

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

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

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

Troubleshooting

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

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

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

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

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

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

3. Why does the Crawlbase authorization link not work?

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

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

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

The Crawlbase connection can expire or lose permission.

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

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

Claude can manage the Crawlbase connection for you.

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

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

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

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

Supported Tools

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

Crawl URL

Fetch a public HTTP or HTTPS URL through Crawlbase using the connected Normal token and return its content with separate target and Crawlbase statuses.

Delete Stored Pages

Irreversibly delete explicitly selected pages from Crawlbase Cloud Storage by request ID and return each page's deletion outcome.

Generate User Agents

Generate one to ten realistic randomized User-Agent strings for a selected device class.

Get Crawling Usage

Return current Crawling API usage and optionally previous-month statistics for the connected Crawlbase account.

Get Storage Count

Return the number of pages currently held in Crawlbase Cloud Storage.

Get Stored Page

Retrieve the latest Crawlbase Cloud Storage page by exactly one request ID or original URL.

Get Stored Pages

Retrieve up to 100 Crawlbase Cloud Storage pages by request ID without deleting them.

List Stored Page IDs

Return one page of Crawlbase Cloud Storage request IDs and a short-lived continuation cursor.

FRAMEWORKS

How to build Crawlbase MCP Agent with another framework

ChatGPT logo

ChatGPT

Use Crawlbase MCP with ChatGPT

Hermes logo

Hermes

Use Crawlbase MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Crawlbase MCP with Atomic Agent

FAQ

Frequently asked questions

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

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

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