How to connect Compabase to Gemini
Compabase gives Gemini read-only access to data on 3M+ Polish companies from the KRS and CEIDG registers (financial statements, management and owners, public tenders, insolvency and sanctions records).
Server URL
When the client asks you to sign in, the Compabase page opens: sign in to your Compabase account and click Allow. The client then receives its own access token.
Steps
- Open gemini.google.com on a computer, then Settings → Connected Apps (under Personal Intelligence if you don't see it).
- Under Custom apps choose Add a custom app.
- Paste https://compabase.com/api/mcp/connect and click Next. Sign in to Compabase and click Allow; Gemini registers itself automatically (dynamic client registration).
- In a chat type @ and pick Compabase, or just ask a question and let Gemini call it.
Google currently limits custom apps to personal Google accounts of adults in the US, in English, with Gemini Apps Activity turned on.
Once connected on the web, the app also works in the Gemini mobile app.
Try these prompts
- Look up Orlen (KRS 0000028860) and summarise its latest financials.
- Who are the beneficial owners of KRS 0000028860?
- List software companies (PKD 62.01) in Gdańsk with revenue above PLN 10 million.
Cost and access
You need a Compabase account; the free plan includes a monthly allowance of MCP queries and paid plans raise it. You sign in once in the OAuth window; no API key to copy. Prefer a static key? Create an MCP key at https://compabase.com/integrations?tab=mcp and send it as Authorization: Bearer mcpk_… to https://compabase.com/api/mcp.
All tools are read-only. See the MCP documentation for every tool, or the GitHub repository.