Polish KYB MCP Server
Verify Polish business partners in one place: registry profile, management and shareholders, beneficial owners, insolvency and restructuring, court gazette notices, sanctions lists and financial supervision licences.
Remote MCP server (Streamable HTTP), read-only, hosted by Compabase.
https://compabase.com/api/mcp/kyb
Tools
| Tool | What it does |
|---|---|
search_companies / get_company | Find the company and read its KRS registry profile and VAT status. |
get_company_people / get_company_beneficiaries | Management board, supervisory board, shareholders and beneficial owners (CRBR). |
get_company_debt_registry | Insolvency and restructuring proceedings (KRZ). |
get_company_court_gazette | Court and Commercial Gazette (MSiG) notices. |
get_company_sanctions / get_company_financial_supervision | Sanctions lists and KNF financial supervision register. |
get_company_secured_liabilities / get_company_articles | Secured liabilities and articles of association. |
Example prompts
- Run a KYB check on the company with NIP 5260250995.
- Who are the beneficial owners of KRS 0000028860?
- Is this company in insolvency proceedings or on a sanctions list?
Authentication
Sign in with your Compabase account (OAuth) in clients that support it, or send an MCP key: create one at https://compabase.com/integrations?tab=mcp and pass it as Authorization: Bearer mcpk_… or append ?apiKey=mcpk_… to the URL. Queries count toward your Compabase plan.
Setup
Claude (claude.ai, Desktop): Settings → Connectors → Add custom connector → paste the URL above (add ?apiKey=mcpk_… if you use a key).
Cursor / VS Code / Windsurf (mcp.json):
{
"mcpServers": {
"polish-kyb": {
"url": "https://compabase.com/api/mcp/kyb",
"headers": { "Authorization": "Bearer mcpk_YOUR_KEY" }
}
}
}
ChatGPT: Settings → Apps → Developer mode → Create → paste the URL.
About
Part of the Compabase MCP family. Full Compabase MCP (all Polish company data tools): https://compabase.com/api/mcp.
Questions: contact@compabase.com
Gemini CLI
gemini extensions install https://github.com/ContentWriterco/Polish-KYB-MCP
Gemini CLI asks for your Compabase MCP key during installation (create one at https://compabase.com/integrations?tab=mcp).
Setup guides
Step-by-step setup guides for Claude, ChatGPT, Gemini, Grok, Le Chat, Perplexity, Cursor, VS Code and Claude Code: https://compabase.com/docs/mcp/connect/