🇵🇱 Polish Companies MCP Server – Compabase

Compabase MCP is a Model Context Protocol server that gives AI assistants – Claude, Cursor, Windsurf, VS Code, and any MCP-compatible client – direct access to 3 million+ Polish companies from the KRS (National Court Register) and CEIDG registries, plus financials, people, rankings, and public-register enrichments (SUDOP, BZP, TED, URE, BDO, GPW, KRZ, CRBR, MSiG, EU funds).

Ask in plain language. The model maps prompts to structured tools over Streamable HTTP (JSON-RPC 2.0).

Quick Start

You can connect without a key. The agent signs you up and writes mcpk_… into the client config after email confirmation.

Cursor / Windsurf / VS Code – .cursor/mcp.json (or the equivalent MCP JSON):

{
  "mcpServers": {
    "compabase": {
      "url": "https://compabase.com/api/mcp"
    }
  }
}

Then ask the agent to sign you up (request_signup with your email). After you click the magic link, poll check_signup until status: ready. Restart the client if it does not hot-reload MCP config.

Claude Desktop – claude_desktop_config.json (after you have a key):

{
  "mcpServers": {
    "compabase": {
      "url": "https://compabase.com/api/mcp",
      "headers": {
        "Authorization": "Bearer mcpk_YOUR_KEY_HERE"
      }
    }
  }
}

Claude.ai (Web / Mobile Connectors):

Go to Settings → Connectors → Add Custom Connector
URL: https://compabase.com/mcp?apiKey=mcpk_YOUR_KEY_HERE
Authentication: None (Detected) (key is passed in URL)

Keys can also be created in Integrations → MCP. MCP keys (mcpk_…) are separate from REST API keys (cb_…).

Field	Value
Endpoint	`POST https://compabase.com/api/mcp` or `https://compabase.com/mcp`
Authentication	`Authorization: Bearer mcpk_…`, `X-API-Key: mcpk_…`, or `?apiKey=mcpk_…`
Protocol	MCP Streamable HTTP (JSON-RPC 2.0)
MCP version	`2024-11-05`
Server	`compabase` 1.6.2

Example prompts

Find active IT companies in Warsaw with revenue over 5 million PLN.
What is the latest revenue and net profit of Allegro?
List board members of the company with KRS 0000028860.
How many active companies in mazowieckie have primary PKD starting with 62?
What is the median revenue in PKD section J?
Is Orlen listed on GPW? What is the ticker and P/E?

Available tools

Live traffic is always POST https://compabase.com/api/mcp with method: tools/call and params.name set to the tool name. Identify a company with name, krs, or nip when a tool accepts them. Monetary filters default to PLN.

Full schemas: mcp.yaml · interactive docs.

51 tools on the full server (generated from the live tools/list).

Onboarding (no key)

Tool	Purpose
`request_signup`	Start Compabase account setup for an email
`check_signup`	Poll a request_signup session
`list_plans`	List Compabase billing plans and limits

Company data

Tool	Purpose
`search_companies`	Search and filter Polish KRS companies (spółki)
`get_company`	Get company registry profile and headline financials for one latest filed period (`financials.period_to` / `financial_period_to`): revenue, profit, costs…
`get_financials`	Get full financial statement metrics per fiscal period
`get_company_people`	Get people associated with a company
`count_companies`	Count KRS companies matching given filters
`execute_sql`	Execute a read-only SQL SELECT query against the Compabase database
`get_company_rankings`	Get a company's revenue rank positions within its industry (PKD), region (voivodeship), and all of Poland
`get_financial_stats`	Get precomputed aggregate financial statistics for a sector, region, PKD branch, or country

Register enrichments

Tool	Purpose
`get_company_public_aid`	Get SUDOP public aid / grants for a company
`get_company_eu_funds`	Get European Funds (Fundusze Europejskie) projects for a company
`get_company_procurement`	Get European Commission FTS awards for a company
`get_company_public_tenders`	Get BZP public procurement data
`get_company_energy_licenses`	Get URE energy concessions for a company
`get_company_public_contracts`	Get contracts from Poland's Central Register of Contracts (CRU JSFP, Ministry of Finance) where the company is the contractor of a public-sector unit…
`get_company_nfz_contracts`	Get contracts between the company (as a healthcare provider) and Poland's National Health Fund (NFZ)
`get_company_nfz_queues`	Get NFZ (National Health Fund) waiting lists of a healthcare provider
`get_company_trademarks`	Get Polish Patent Office (UPRP) trademarks owned or applied for by the company
`get_company_procurement_disputes`	Get National Appeal Chamber (Krajowa Izba Odwoławcza, KIO) rulings in public procurement disputes involving the company
`get_company_waste_registry`	Get BDO waste and packaging register data
`get_company_stock_market`	Get Warsaw Stock Exchange listing for a company
`get_company_eu_tenders`	Get TED EU-threshold public procurement
`get_company_court_gazette`	Get Court and Commercial Gazette (MSiG) notices for one company
`get_company_sanctions`	Official MSWiA sanctions listing for one company
`get_company_debt_registry`	Get KRZ insolvency / restructuring proceedings
`get_company_financial_supervision`	KNF register (Polish Financial Supervision Authority): licences and entries of a financial company
`get_company_secured_liabilities`	Secured liabilities from the latest financial-statement notes (period ending 2025+): mortgages (hipoteki), registered / financial pledges (zastawy)…
`get_company_real_estate`	Company real estate from the latest financial statement (period ending 2025+): land incl. perpetual usufruct, buildings and premises, investment property…
`get_company_beneficiaries`	Get CRBR beneficial owners for a KRS company
`get_company_articles`	Get full text of the company's articles of association or statute (umowa spółki / statut) from RAR (Repozytorium Akt Rejestrowych)

Account (skip `mcp_queries`)

Tool	Purpose
`get_usage`	Get current billing period usage and remaining quota
`get_plan`	Get the user's active billing plan details
`list_watchlist`	List companies on the user's watchlist with company data (name, KRS, NIP, revenue, city)
`add_to_watchlist`	Add a company to the user's watchlist
`remove_from_watchlist`	Remove a company from the user's watchlist
`list_api_keys`	List all active REST API keys (cb_…) for the user's account
`create_api_key`	Create a new REST API key (cb_…)
`delete_api_key`	Revoke (deactivate) a REST API key by its ID
`list_mcp_keys`	List all active MCP keys (mcpk_…) for the user's account
`create_mcp_key`	Create a new MCP key (mcpk_…)
`delete_mcp_key`	Revoke (deactivate) an MCP key by its ID
`export_companies`	Bulk file export of companies matching filters (CSV / XLSX / JSON)
`upgrade_plan`	Create a Stripe Checkout session for a plan upgrade
`set_webhook_url`	Configure, view, or remove webhook for watchlist event notifications
`get_byok_keys`	List configured Bring-Your-Own-Key (BYOK) provider keys status
`set_byok_key`	Add or update a BYOK provider API key
`delete_byok_key`	Remove a configured BYOK provider key
`add_watchlist_batch`	Add multiple companies to watchlist in one call
`set_notification_preferences`	Get or update email notification preferences for watchlist changes

Quota

Data tools (search, financials, enrichments, SQL): each successful tools/call consumes one mcp_queries unit.

Account tools skip mcp_queries. export_companies consumes export_companies instead.

initialize, tools/list, and ping do not consume quota. Limits reset with the billing period.

Plan	MCP queries / month	API requests	Exports
Free	10	100	50
Pro	50	5 000	1 000
Scale	1 000	100 000	20 000
Enterprise	Custom	Custom	Custom

See compabase.com/pricing.

Protocol

Property	Value
Endpoint	`POST https://compabase.com/api/mcp`
Transport	Streamable HTTP
Protocol version	`2024-11-05`
Capabilities	`tools`
Server name	`compabase`
Server version	`1.6.2`

Method	Description
`initialize`	Handshake
`tools/list`	Tools and schemas
`tools/call`	Execute a tool
`ping`	Keep-alive
`notifications/initialized`	Client ready

License

MIT

Gemini CLI

gemini extensions install https://github.com/ContentWriterco/Compabase-MCP

On first use Gemini CLI opens the Compabase sign-in page (OAuth). Run /mcp auth compabase if it does not.

Claude Code plugin

This repository is also a Claude Code plugin (MCP server + skill):

/plugin marketplace add ContentWriterco/Compabase-MCP
/plugin install compabase@compabase-plugins

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/

Name		Name	Last commit message	Last commit date
.claude-plugin		.claude-plugin
.well-known/mcp		.well-known/mcp
chatgpt-plugin		chatgpt-plugin
claude-plugin		claude-plugin
GEMINI.md		GEMINI.md
LICENSE		LICENSE
README.md		README.md
gemini-extension.json		gemini-extension.json
glama.json		glama.json
icon.png		icon.png
llms-install.md		llms-install.md
logo-400.png		logo-400.png
mcp.yaml		mcp.yaml
package.json		package.json
server-card.json		server-card.json
server.json		server.json
smithery.yaml		smithery.yaml

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🇵🇱 Polish Companies MCP Server – Compabase

Quick Start

Example prompts

Available tools

Onboarding (no key)

Company data

Register enrichments

Account (skip `mcp_queries`)

Quota

Protocol

Related

License

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Claude Code plugin

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🇵🇱 Polish Companies MCP Server – Compabase

Quick Start

Example prompts

Available tools

Onboarding (no key)

Company data

Register enrichments

Account (skip mcp_queries)

Quota

Protocol

Related

License

Gemini CLI

Claude Code plugin

Setup guides

About

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Account (skip `mcp_queries`)