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mcp/harbor
Claude Code

Polish Open Data (unofficial) for Claude Code

io.github.jaceksmi/polishopendata

Polish registers: KRS, VAT, parcels, prices, GUS statistics, legal acts, REGON/CEIDG.

client:Claude Code transport:stdio runtime:nuget

Install Polish Open Data (unofficial) in Claude Code

run in your project directory

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

claude mcp add polishopendata -e POLISHOPENDATA_OFFLINE_DIR=<POLISHOPENDATA_OFFLINE_DIR> -e POLISHOPENDATA_REGON_KEY=<POLISHOPENDATA_REGON_KEY> -e POLISHOPENDATA_CEIDG_TOKEN=<POLISHOPENDATA_CEIDG_TOKEN> -e POLISHOPENDATA_BDL_CLIENT_ID=<POLISHOPENDATA_BDL_CLIENT_ID> -- dnx PolishOpenData.Mcp --yes

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

Polish Open Data (unofficial) in other clients

Polish Open Data (unofficial) MCP server