How do I install Compabase?

Copy the http config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.

Does Compabase need an API key?

No required environment variable is listed on this record.

What transport does Compabase use?

Compabase is reached over HTTP.

When was Compabase last checked?

Last checked 2026-11-09. 3M+ Polish companies (KRS, CEIDG): financials, people, rankings and public registries.

Compabase MCP server

Power your agent

Add this server

The publisher's own URL. Not a PlugMCP endpoint.

Add to Cursor Add in Claude Add to VS Code Run on PlugMCP

Host a copy with our keys and logs.

Server URL

https://compabase.com/api/mcp

The Claude button above opens Claude with the name and URL filled in. You still confirm it there.

shClaude Code

1claude mcp add --transport http io.github.contentwriterco-compabase https://compabase.com/api/mcp

Run in a terminal.

jsonClaude Desktop

1{2  "mcpServers": {3    "io.github.contentwriterco-compabase": {4      "command": "npx",5      "args": [6        "-y",7        "mcp-remote",8        "https://compabase.com/api/mcp"9      ]10    }11  }12}

claude_desktop_config.json

Remote · HTTPPublisher installStep-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

Server facts

Remote

Transport: http
Version: 1.6.2
Last checked

Tools

No tool list yet. Remote servers get one after the first health check.

FAQ

Questions

🇵🇱 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.

Onboarding (no key)

Tool	Purpose
`request_signup`	Send a magic-link email; returns `setup_id`
`check_signup`	Poll until email confirmed; returns `mcp_key` once
`list_plans`	Billing plans and limits; then `upgrade_plan`

Company data

Tool	Purpose
`search_companies`	Filter KRS companies (name, PKD, city, voivodeship, financials, status, contacts). Up to 50 rows. Does not browse JDG.
`count_companies`	Count matching KRS companies (same filters, no sort/limit)
`get_company`	One profile + headline financials for the latest filed period
`get_financials`	Full P&L / balance-sheet metrics per fiscal period
`get_company_people`	Board, shareholders, proxies, other roles
`get_company_rankings`	Revenue rank in PKD / region / Poland
`get_financial_stats`	Sector/region/PKD aggregates (median, p25–p90, n, …)
`execute_sql`	Read-only `SELECT` / `WITH … SELECT` for custom joins

Register enrichments

Tool	Source
`get_company_sudop`	SUDOP public aid / de minimis (NIP)
`get_company_bzp`	BZP procurement awards and buyer notices (NIP)
`get_company_ted`	TED EU-threshold tenders (NIP)
`get_company_ure`	URE energy concessions (NIP)
`get_company_bdo`	BDO waste / packaging register (NIP)
`get_company_gpw`	GPW / NewConnect / GlobalConnect listing + delayed quotes
`get_company_fe`	European Funds (MFiPR lists, cohesion)
`get_company_fts`	European Commission FTS grants (Horizon, LIFE, …)
`get_company_msig`	Court and Commercial Gazette (MSiG)
`get_company_krz`	KRZ insolvency / restructuring (KRS or CEIDG NIP)
`get_company_beneficiaries`	CRBR beneficial owners (KRS). Names only – never PESEL

Account (skip `mcp_queries`)

Tool	Purpose
`get_usage`	Period usage: `mcp_queries`, `api_requests`, `export_companies`, `ask_ai_credits`, `watchlist_companies`
`get_plan`	Active plan, limits, prepaid credit, reset date
`list_watchlist` / `add_to_watchlist` / `remove_from_watchlist` / `batch_add_to_watchlist`	Watchlist (KRS or NIP, including CEIDG)
`list_api_keys` / `create_api_key` / `delete_api_key`	REST keys (`cb_…`)
`list_mcp_keys` / `create_mcp_key` / `delete_mcp_key`	MCP keys (`mcpk_…`)
`export_companies`	Bulk CSV / XLSX / JSON (up to 500 rows). Uses the export meter, not `mcp_queries`
`upgrade_plan`	Stripe Checkout URL (`pro` / `scale`)
`set_webhook_url`	Watchlist change webhooks
`get_byok_keys` / `set_byok_key` / `delete_byok_key`	BYOK (OpenAI / Claude / Gemini), Pro+
`set_notification_preferences`	Email alerts 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

Compabase REST API – OpenAPI 3.1 (v1.yaml)
Interactive API docs
Interactive MCP docs
compabase.com

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/

Compabase

Add this server

Host a copy with our keys and logs.

Server facts

Tools

Questions

How do I install Compabase?

Does Compabase need an API key?

What transport does Compabase use?

When was Compabase last checked?

Documentation

🇵🇱 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

Add this server

Host a copy with our keys and logs.

Server facts

Tools

Questions

How do I install Compabase?

Does Compabase need an API key?

What transport does Compabase use?

When was Compabase last checked?

Documentation

🇵🇱 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

Account (skip `mcp_queries`)