# Rejestr.io MCP server

> Look up Polish company data from KRS and CRBR: boards, beneficial owners, financial statements and connections.

- Listing: https://mcp.tc/i/rejestr-io
- Connect: use the server's own URL `https://mcp.rejestr.io/mcp` (OAuth sign-in at the server); clients connect to it directly. The listing link is a page, not an MCP endpoint.
- Type: remote (Streamable HTTP)
- Auth: OAuth sign-in
- Category: [Finance & Payments](https://mcp.tc/c/finance-payments)
- Vendor: Rejestr.io
- Homepage: <https://rejestr.io/ai?utm_source=mcp-registry&utm_medium=referral&utm_campaign=2026-11-katalogi-mcp>

## About

Connects to Rejestr.io, a service built on Polish company registers. It gives an assistant data from KRS and CRBR, including company boards, beneficial owners, financial statements and connections between people and companies.

The server is hosted at a remote streamable HTTP endpoint. Access needs Rejestr.io credentials. The server requests the scopes mcp:use and mcp:write.

## What it can do

- Look up Polish companies in KRS
- Check beneficial owners from CRBR
- Review company boards and representatives
- Read company financial statements
- Explore connections between people and companies

## Example prompts

- "Who sits on the management board of this Polish company?"
- "Show the beneficial owners of a company by its KRS number."
- "Summarize the latest financial statements of this Polish company."
- "Which other companies are connected to this board member?"

## Install

### Claude Code

1. Run this in a terminal, in your project folder:

```bash
claude mcp add --transport http rejestr-io https://mcp.rejestr.io/mcp
```

2. Start Claude Code, type `/mcp`, pick **rejestr-io** and choose **Authenticate**. A browser window opens for the Rejestr.io sign-in.

Add `--scope user` to make it available in every project, not just this one.

### Claude Desktop

1. Open **Customize → Connectors**, click **+ Add**, then **Add custom connector**.

2. Name it **Rejestr.io** and paste this URL:

```url
https://mcp.rejestr.io/mcp
```

3. Click **Add**, then **Connect**, and sign in when Rejestr.io asks.

Claude Desktop’s JSON config file only starts local servers. Remote servers go through Connectors, and connectors you add on claude.ai show up here too.

### claude.ai

1. Open the connector form on claude.ai. This button fills in the name and URL for you:

[Add to claude.ai](<https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=Rejestr.io&connectorUrl=https%3A%2F%2Fmcp.rejestr.io%2Fmcp>) (opens connector settings)

2. Check that the URL reads `https://mcp.rejestr.io/mcp` and click **Add**.

3. Click **Connect** and sign in when Rejestr.io asks.

Free plans allow one custom connector. On Team and Enterprise plans an owner adds it under **Organization settings → Connectors**.

### ChatGPT

1. On chatgpt.com, go to **Plugins**, select **+**, then **Add custom MCP server**.

2. Enter a name for the server.

3. Under **Connection**, paste `https://mcp.rejestr.io/mcp` as the server URL, then for authentication choose **OAuth**. ChatGPT sends you to Rejestr.io to sign in.

4. Check **I understand and want to continue**, then select **Create as a plugin**.

Whether you can add a custom MCP server depends on your ChatGPT plan and your workspace permissions (in Business workspaces, admins and owners can).

### Cursor

[Add to Cursor](<https://cursor.com/install-mcp?name=rejestr-io&config=eyJ1cmwiOiJodHRwczovL21jcC5yZWplc3RyLmlvL21jcCJ9>) (opens Cursor)

Or add it by hand to `~/.cursor/mcp.json` (all projects) or `.cursor/mcp.json` (this project):

`mcp.json`:

```json
{
  "mcpServers": {
    "rejestr-io": {
      "url": "https://mcp.rejestr.io/mcp"
    }
  }
}
```

Cursor shows **Needs authentication** next to the server. Click the button beside it to sign in.

### VS Code

[Install in VS Code](<https://vscode.dev/redirect/mcp/install?name=rejestr-io&config=%7B%22type%22%3A%22http%22%2C%22url%22%3A%22https%3A%2F%2Fmcp.rejestr.io%2Fmcp%22%7D>) (opens VS Code)

Or from a terminal:

```bash
code --add-mcp '{"name":"rejestr-io","type":"http","url":"https://mcp.rejestr.io/mcp"}'
```

Or commit it to the repo in `.vscode/mcp.json`:

`.vscode/mcp.json`:

```json
{
  "servers": {
    "rejestr-io": {
      "type": "http",
      "url": "https://mcp.rejestr.io/mcp"
    }
  }
}
```

VS Code asks you to sign in the first time the server starts.

### Devin Desktop

1. Add it to `~/.config/devin/mcp_config.json` (macOS and Linux) or `%APPDATA%\devin\mcp_config.json` (Windows):

`mcp_config.json`:

```json
{
  "mcpServers": {
    "rejestr-io": {
      "serverUrl": "https://mcp.rejestr.io/mcp"
    }
  }
}
```

2. Refresh the MCP server list in Cascade and sign in when asked.

Devin Desktop is the new name for Windsurf. It reads `serverUrl` (or `url`) for remote servers.

### Codex

```bash
codex mcp add rejestr-io --url https://mcp.rejestr.io/mcp
codex mcp login rejestr-io
```

Or edit `~/.codex/config.toml` directly:

`config.toml`:

```toml
[mcp_servers.rejestr-io]
url = "https://mcp.rejestr.io/mcp"
```

### Gemini CLI

```bash
gemini mcp add --transport http rejestr-io https://mcp.rejestr.io/mcp
```

Then, inside Gemini CLI, run `/mcp auth rejestr-io` to sign in.

This adds it to the current project. Add `-s user` to use it everywhere.

### Any client

Most clients accept this shape. Some name the URL field differently: `serverUrl` in Devin Desktop, `httpUrl` in Gemini CLI’s settings file.

```json
{
  "mcpServers": {
    "rejestr-io": {
      "type": "http",
      "url": "https://mcp.rejestr.io/mcp"
    }
  }
}
```

Zed puts servers under `context_servers` in its settings. Cline needs `"type": "streamableHttp"`, or it assumes SSE.

Client only starts local servers? Bridge it with `npx -y mcp-remote https://mcp.rejestr.io/mcp`.

## Details

- Server version: 0.11.0
- Last checked: 2026-11-15 (reachable, asks for credentials)
- Listed: 2026-11-09
- Updated: 2026-11-09

---
Source: https://mcp.tc/i/rejestr-io (mcp.tc is an independent directory, not affiliated with this server's publisher). Corrections: https://mcp.tc/report