What data sources does Polish Companies cover?
It covers company profiles from KRS and CEIDG (3M+ entities), including financial statements from KRS e‑filings, ownership structures, management roles, PKD industry codes, and geographic data.
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Basic information
Compabase MCP is a Model Context Protocol server that gives AI assistants — Claude, Cursor, Windsurf, and any other MCP-compatible client — direct access to 3 million+ Polish companies from the KRS (National Court Register) and CEIDG registries.
Add this server to your MCP-compatible client using the configuration below.
{
"mcpServers": {
"compabase": {
"url": "https://compabase.com/api/mcp",
"headers": {
"Authorization": "Bearer mcpk_YOUR_KEY_HERE"
}
}
}
}Tool list not available yet
This listing does not currently have a tool list to display. This does not mean the server has no tools; check its documentation for supported capabilities.
Fetch the live tool list directly from this server's endpoint using the button above.
Polish Companies is a Model Context Protocol (MCP) server that gives AI assistants—such as Claude, Cursor, and Windsurf—direct access to 3 million+ Polish companies from the KRS (National Court Register) and CEIDG registries. It lets users ask natural-language questions about Polish business data, including financials, ownership structures, industry rankings, and board members, all backed by real registry data.
Sign up at compabase.com/mcp to generate a free MCP key (mcpk_...), then configure your MCP client with the endpoint https://compabase.com/api/mcp and the Authorization: Bearer <mcpk_...> header. Once connected, you can ask your AI assistant questions like “What were Allegro’s revenues in 2023?” or “Find active e-commerce companies in Warsaw with revenue over 50M PLN.”
It covers company profiles from KRS and CEIDG (3M+ entities), including financial statements from KRS e‑filings, ownership structures, management roles, PKD industry codes, and geographic data.
All requests require an MCP key sent as a Bearer token in the `Authorization` header. Generate a key (`mcpk_...`) at compabase.com/mcp.
Yes. Each MCP key includes 10 free MCP queries per month. For more queries, you can upgrade to a higher plan at compabase.com/pricing.
Six tools: `search_companies`, `count_companies`, `get_company`, `get_financials`, `get_company_people`, and `execute_sql` (read‑only SQL for complex aggregations). The AI selects the appropriate tool automatically.
It uses MCP Streamable HTTP transport at `https://compabase.com/api/mcp` with JSON‑RPC 2.0. Supported methods include `initialize`, `tools/list`, `tools/call`, and `ping`.

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