# OpenRegister

```json
{
  "name": "OpenRegister",
  "slug": "open_register",
  "url": "https://composio.dev/toolkits/open_register",
  "markdown_url": "https://composio.dev/toolkits/open_register.md",
  "logo_url": "https://logos.composio.dev/api/openregister",
  "categories": [
    "data & analytics"
  ],
  "is_composio_managed": false,
  "updated_at": "2026-10-04T16:01:12.216Z"
}
```

![OpenRegister logo](https://logos.composio.dev/api/openregister)

## Description

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with OpenRegister MCP or direct API to look up German companies, inspect ownership structures, review financial records, and monitor insolvency updates through natural language.

## Summary

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.

## Categories

- data & analytics

## Toolkit Details

- Tools: 10

## Images

- Logo: https://logos.composio.dev/api/openregister

## Authentication

- **Api Key**
  - Type: `api_key`
  - Description: Api Key authentication for OpenRegister.
  - Setup:
    - Configure Api Key credentials for OpenRegister.
    - Use the credentials when creating an auth config in Composio.

## Suggested Prompts

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

## 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.

## Installation and MCP Setup

### Path 1: SDK Installation

#### Path 1, Step 1: Install Composio

Install the Composio SDK, the OpenAI provider, and the OpenAI SDK
```python
pip install composio composio_openai openai
```

```typescript
npm install @composio/core @composio/openai openai
```

#### Path 1, Step 2: Create a Composio session

Initialize Composio with the OpenAI Responses provider and create a session scoped to OpenRegister
```python
import json
from openai import OpenAI
from composio import Composio
from composio_openai import OpenAIResponsesProvider

composio = Composio(provider=OpenAIResponsesProvider())
client = OpenAI()

session = composio.create(user_id="your-user-id", toolkits=["open_register"])
tools = session.tools()
```

```typescript
import OpenAI from "openai";
import { Composio } from "@composio/core";
import { OpenAIResponsesProvider } from "@composio/openai";

const composio = new Composio({ provider: new OpenAIResponsesProvider() });
const client = new OpenAI();

const session = await composio.create("your-user-id", { toolkits: ["open_register"] });
const tools = await session.tools();
```

#### Path 1, Step 3: Run OpenRegister tools with your agent

Send a request, execute the OpenRegister tool calls through the session, and print the final answer
```python
response = client.responses.create(
    model="gpt-5.6-sol",
    tools=tools,
    input=[{"role": "user", "content": "Find company details and ownership information for Siemens AG in OpenRegister"}],
)

while True:
    tool_calls = [o for o in response.output if o.type == "function_call"]
    if not tool_calls:
        break
    results = composio.provider.handle_tool_calls(response=response, session=session)
    response = client.responses.create(
        model="gpt-5.6-sol",
        tools=tools,
        previous_response_id=response.id,
        input=[
            {"type": "function_call_output", "call_id": call.call_id, "output": json.dumps(results[i])}
            for i, call in enumerate(tool_calls)
        ],
    )

print(response.output_text)
```

```typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "Find company details and ownership information for Siemens AG in OpenRegister" }],
});

while (response.output.some((o) => o.type === "function_call")) {
  const outputs = await composio.provider.handleToolCalls(session, response.output);
  response = await client.responses.create({
    model: "gpt-5.6-sol",
    tools,
    previous_response_id: response.id,
    input: outputs,
  });
}

console.log(response.output_text);
```

### Path 2: MCP Server Setup

#### Path 2, Step 1: Install Composio

Install the Composio SDK and your agent framework
```python
pip install composio claude-agent-sdk
```

```typescript
npm install @composio/core ai @ai-sdk/mcp @ai-sdk/openai
```

#### Path 2, Step 2: Create a session with MCP enabled

Create a session scoped to OpenRegister and read its MCP URL and headers
```python
from composio import Composio

composio = Composio()
session = composio.create(user_id="your-user-id", toolkits=["open_register"], mcp=True)
```

```typescript
import { Composio } from "@composio/core";

const composio = new Composio();
const { mcp } = await composio.create("your-user-id", {
  toolkits: ["open_register"],
  mcp: true,
});
```

#### Path 2, Step 3: Connect your agent to the MCP server

Pass the session's MCP URL and headers to your agent and run a OpenRegister request
```python
import asyncio
from claude_agent_sdk import ClaudeSDKClient, ClaudeAgentOptions, AssistantMessage, TextBlock

options = ClaudeAgentOptions(
    mcp_servers={
        "composio": {
            "type": "http",
            "url": session.mcp.url,
            "headers": session.mcp.headers,
        }
    },
    system_prompt="You are a helpful assistant with access to OpenRegister tools.",
    tools=[],
    allowed_tools=["mcp__composio__*"],
)

async def main():
    async with ClaudeSDKClient(options=options) as client:
        await client.query("Find company details and ownership information for Siemens AG in OpenRegister")
        async for message in client.receive_response():
            if isinstance(message, AssistantMessage):
                for block in message.content:
                    if isinstance(block, TextBlock):
                        print(block.text)

asyncio.run(main())
```

```typescript
import { createMCPClient } from "@ai-sdk/mcp";
import { openai } from "@ai-sdk/openai";
import { generateText, stepCountIs } from "ai";

const client = await createMCPClient({
  transport: { type: "http", url: mcp.url, headers: mcp.headers },
});

const { text } = await generateText({
  model: openai("gpt-5.6-sol"),
  tools: await client.tools(),
  prompt: "Find company details and ownership information for Siemens AG in OpenRegister",
  stopWhen: stepCountIs(10),
});

console.log(text);
await client.close();
```

## Why Use Composio?

### 1. AI Native OpenRegister Integration

- Supports both OpenRegister MCP and direct API based integrations
- Structured, LLM-friendly schemas for reliable company, person, ownership, and document lookups
- Rich coverage for querying German register, financial, insolvency, monitoring, and usage data

### 2. Managed Auth

- Secure API key handling so your agents don't need hard-coded OpenRegister credentials
- Central place to manage, scope, and revoke OpenRegister access
- Per user and per environment credentials for cleaner development and production setups

### 3. Agent Optimized Design

- OpenRegister tools are shaped so language models can understand what data to fetch and when
- Tools are tuned using real error and success rates to improve reliability over time
- Comprehensive execution logs so you can see each company lookup, document request, and monitoring action

### 4. Enterprise Grade Security

- Fine-grained RBAC so you control which agents and users can access OpenRegister
- Scoped, least privilege access to sensitive company, person, ownership, and financial data
- Full audit trail of agent actions to support review, compliance, and due diligence workflows

## Use OpenRegister with any AI Agent Framework

Choose a framework you want to connect OpenRegister with:

- [ChatGPT](https://composio.dev/toolkits/open_register/framework/chatgpt)
- [Claude Cowork](https://composio.dev/toolkits/open_register/framework/claude-cowork)
- [Grok Bot](https://composio.dev/toolkits/open_register/framework/grok-bot)

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## Frequently Asked Questions

### Do I need my own developer credentials to use OpenRegister with Composio?

Yes, OpenRegister requires you to configure your own API key. Once set up, Composio handles secure credential storage and API request handling for you.

### Can I use multiple toolkits together?

Yes! Composio's Tool Router enables agents to use multiple toolkits. [Learn more](https://docs.composio.dev/tool-router/overview).

### Is Composio secure?

Composio is SOC 2 and ISO 27001 compliant with all data encrypted in transit and at rest. [Learn more](https://trust.composio.dev).

### What if the API changes?

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

---
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