Polish KYB MCP Server
MCP serverDev toolsLets your agent look up Polish company registry data, owners, insolvency and sanctions records.
Needs your own account with this service; the key stays on Ahel's server side.
Then ask your AI: use Polish KYB MCP Server to search companies
Details
Available today. Use it as a step in a pipeline you build, or from your connected AI.
Add it as a step in a pipeline you build on Ahel, or connect Ahel to Claude, ChatGPT, Cursor, Claude Code or Codex and ask your AI to use it.
About this server
Know-your-business checks for Polish companies: KRS, owners, insolvency, sanctions, gazette notices.
Install Polish KYB MCP Server
The server’s own address, for the clients that take one directly. Or connect Ahel once and every client you use reads it from one address, with the account kept on Ahel rather than in each client’s config.
Claude Code
claude mcp add --transport http --scope user polish-kyb-mcp-server 'https://compabase.com/api/mcp/kyb'Run it once in your project, then open /mcp to approve any sign-in the server asks for.
Claude Desktop
https://compabase.com/api/mcp/kybAdd a custom connector in Settings, paste this address, and approve the sign-in.
Cursor
cursor://anysphere.cursor-deeplink/mcp/install?name=polish-kyb-mcp-server&config=eyJ1cmwiOiJodHRwczovL2NvbXBhYmFzZS5jb20vYXBpL21jcC9reWIifQ==Open the link and Cursor adds the server at that address.
ChatGPT
https://compabase.com/api/mcp/kybIn Settings, enable Developer mode, create an MCP app, and paste this address. Your plan and workspace must allow custom apps.
Codex
codex mcp add polish-kyb-mcp-server --url 'https://compabase.com/api/mcp/kyb'Run it once, then sign in with codex mcp login polish-kyb-mcp-server if the server asks for an account.
From the project's README
As published by contentwriterco/polish-kyb-mcp in README.md.
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/
Tools it offers (12)
What this server listed when Ahel dialed its public endpoint in Oct 2026, with no key and no account of yours. The names are the server’s own.
search_companiesget_companyget_company_peopleget_company_stock_marketget_company_court_gazetteget_company_sanctionsget_company_debt_registryget_company_financial_supervisionget_company_secured_liabilitiesget_company_beneficiariesget_company_articles_of_associationget_usage
Signals
- Last commit
- Oct 2026
Advanced
- Delivery
- polish-kyb MCP server → your Ahel connector (mcp.ahel.ai) → your AI.
- Item type
- mcp-server
- Key
io-github-contentwriterco-polish-kyb- Source
- github.com/contentwriterco/polish-kyb-mcp
- Hosted endpoint
https://compabase.com/api/mcp/kyb
github.com/contentwriterco/polish-kyb-mcp
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