# How to connect OpenRegister to Claude Cowork ```json { "title": "How to connect OpenRegister to Claude Cowork", "toolkit": "OpenRegister", "toolkit_slug": "open_register", "framework": "Claude Cowork", "framework_slug": "claude-cowork", "url": "https://composio.dev/toolkits/open_register/framework/claude-cowork", "markdown_url": "https://composio.dev/toolkits/open_register/framework/claude-cowork.md", "updated_at": "2026-08-10T12:34:39.861Z" } ``` ## Introduction Cowork is Anthropic's AI agent for knowledge work. Think of it as Claude Code for everything else. It works autonomously with your computer, local files, and applications to accomplish complex tasks. This guide walks you through the easiest and most secure way to connect your OpenRegister account to Cowork 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. ## Also integrate OpenRegister with - [ChatGPT Work](https://composio.dev/toolkits/open_register/framework/chatgpt) ## Connect OpenRegister to Claude Cowork ### Connecting OpenRegister to Claude Cowork 1. Open Customize In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top. 2. Add the Composio MCP server Click Add custom connector and paste in the Composio MCP server URL: ```bash https://connect.composio.dev/mcp ``` ## What is Claude Cowork? Claude Cowork is Anthropic's agent for general knowledge work. It can use your computer, files, and connected applications to complete longer-running tasks across your work tools. With Composio Connect, Cowork can securely access apps like OpenRegister through MCP without you sharing account credentials directly with the agent. ## What is the OpenRegister MCP server, 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. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `OPEN_REGISTER_GET_COMPANY_DATA` | Get Company Data | Read one company profile, financials, historical ownership, holdings, current owners, or UBOs. Operations cost 10-25 credits; realtime profile/owners cost 20 credits. Historical ownership polls only after unbilled HTTP 202 responses and stops at the first billable HTTP 200. Financial source URLs expire after about 30 minutes and should be used immediately. | | `OPEN_REGISTER_GET_CREDIT_USAGE` | Get Credit Usage | Check the connected OpenRegister account's plan, included and used credits, remaining balance, overage, and reset time. This request costs 0 credits. | | `OPEN_REGISTER_GET_DOCUMENT` | Get Document | Fetch an official Handelsregister document in real time for a company or retrieve a stored document by ID. Each request costs 10 credits. The tool returns document metadata and an ephemeral URL without downloading the file; use the URL immediately. Stored URLs are valid for 15 minutes, while the realtime URL expiry is not documented. | | `OPEN_REGISTER_GET_INSOLVENCY` | 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. Costs 10 OpenRegister credits. | | `OPEN_REGISTER_GET_PERSON_DATA` | Get Person Data | Read a person's profile and management positions or the companies in which they hold ownership stakes. Each request costs 10 credits. | | `OPEN_REGISTER_LIST_MONITORS` | List Monitors | List every company and person monitor for the connected OpenRegister account, including disabled monitors. This unpaginated read costs zero credits and was verified as available on a free account. It does not create, re-enable, or delete monitors. | | `OPEN_REGISTER_LOOKUP_COMPANY_BY_URL` | Look Up Company by URL | Resolve a fully qualified company website URL to its OpenRegister company ID and available contact details. Each lookup costs 10 credits. | | `OPEN_REGISTER_SEARCH_COMPANIES` | Search Companies | Find companies by name or structured criteria. Use autocomplete for a fast 1-credit lookup, or advanced search for filters, location, and paginated results at 10 credits per page. | | `OPEN_REGISTER_SEARCH_INSOLVENCIES` | Search Insolvencies | Search German insolvency proceedings by free text or structured debtor, proceeding, status, date, company, or person criteria. Returns one page at a time; each page costs 10 OpenRegister credits. | | `OPEN_REGISTER_SEARCH_PEOPLE` | Search People | Search natural persons by name, birth date, city, or active status. Each returned page costs 10 credits. | ## Supported Triggers None listed. ## Creating MCP Server - Stand-alone vs Composio SDK The OpenRegister MCP server connects Claude Cowork to your OpenRegister account through Composio. Once connected, Cowork can use the available OpenRegister tools and triggers to complete tasks on your behalf. ## Complete Code None listed. ## How to build OpenRegister MCP Agent with another framework - [ChatGPT Work](https://composio.dev/toolkits/open_register/framework/chatgpt) ## Related Toolkits - [Excel](https://composio.dev/toolkits/excel) - Microsoft Excel is a robust spreadsheet application for organizing, analyzing, and visualizing data. It's the go-to tool for calculations, reporting, and flexible data management. - [21risk](https://composio.dev/toolkits/_21risk) - 21RISK is a web app built for easy checklist, audit, and compliance management. 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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. ### 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 OpenRegister tools. ### Can I manage the permissions and scopes for OpenRegister while using Tool Router? 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. ### 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 OpenRegister data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)