X (Twitter)LinkedInGitHubDiscordYouTube

How to connect OpenRegister to Claude

Connect Claude Web, Desktop and Cowork to OpenRegister MCP. Find ownership details for siemens ag, check insolvency records for wirecard ag, and more using natural language, with authentication handled for you.

Create my free accountGet a demo
OpenRegister logoOpenRegister
Api Key

OpenRegister provides structured German register data for companies, people, ownership, finances, insolvency, documents, monitoring, and usage. Use it to access reliable business intelligence from German public-register sources in one place.

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 OpenRegister account to Claude via Composio Connect, enabling it to find ownership details for Siemens AG, check insolvency records for Wirecard AG, monitor new filings for Volkswagen AG, 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 OpenRegister with

ChatGPTGrok Bot

Connecting OpenRegister 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 OpenRegister account

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

For example, ask Claude to:

  • "Find ownership details for Siemens AG"
  • "Check insolvency records for Wirecard AG"
  • "Monitor new filings for Volkswagen AG"

It will prompt you to authenticate and authorize access.

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

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

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

Troubleshooting

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

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

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

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

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

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

3. Why does the OpenRegister authorization link not work?

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

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

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

The OpenRegister connection can expire or lose permission.

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

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

Claude can manage the OpenRegister connection for you.

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

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

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

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

Supported Tools

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

Get Company Data

Read one company profile, financials, historical ownership, holdings, current owners, or UBOs.

Get Credit Usage

Check the connected OpenRegister account's plan, included and used credits, remaining balance, overage, and reset time.

Get Document

Fetch an official Handelsregister document in real time for a company or retrieve a stored document by ID.

Get Insolvency

Get one insolvency proceeding and its complete published event history, including linked entities, status, court, case dates, administration, distributions, and event-specific details.

Get Person Data

Read a person's profile and management positions or the companies in which they hold ownership stakes.

List Monitors

List every company and person monitor for the connected OpenRegister account, including disabled monitors.

Look Up Company by URL

Resolve a fully qualified company website URL to its OpenRegister company ID and available contact details.

Search Companies

Find companies by name or structured criteria.

Search Insolvencies

Search German insolvency proceedings by free text or structured debtor, proceeding, status, date, company, or person criteria.

Search People

Search natural persons by name, birth date, city, or active status.

FRAMEWORKS

How to build OpenRegister MCP Agent with another framework

ChatGPT logo

ChatGPT

Use OpenRegister MCP with ChatGPT

Grok Bot logo

Grok Bot

Use OpenRegister MCP with Grok Bot

FAQ

Frequently asked questions

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

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

Start with OpenRegister.It takes 30 seconds.

Managed auth, hosted MCP servers, and every OpenRegister tool your agent needs.Free to start.

Start building