deweloperuch.pl (unofficial) MCP server

deweloperuch-mcp

<!-- mcp-name: io.github.MBratkowski/deweloperuch-mcp -->

Ask an AI assistant about new-build apartments in Poland: asking prices with their history, real transaction prices and official statistics.

An unofficial MCP server and command-line tool over the public data of deweloperuch.pl: developers' asking prices (with price history), transaction prices from the Real Estate Price Register (RCN) and statistics of GUS and NBP. Thirteen read-only tools, usable from an MCP client such as Claude Desktop or Claude Code, or from the deweloperuch CLI.

Disclaimer. This is an independent project. It is not affiliated with, endorsed by or sponsored by deweloperuch.pl, GUS, NBP or the Register's publishers. The authors of deweloperuch.pl have agreed to the project's use of their service; the client identifies itself as deweloperuch-mcp/ with a link to this repository.

- It is read-only: it never creates or changes anything on the service.

- It is a polite client: at most 1 request per second, one at a time, shared by all processes on your machine; responses are cached; after a 401, 403, 429 or a captcha/WAF challenge it stops sending requests until you clear the lock yourself.

- Please respect the service. It is run by other people; ask narrow questions and do not build loops or bulk downloads on top of this tool.

- Data accuracy is not guaranteed. Prices are asking or registered prices, not valuations or advice.

- You are responsible for how you use the tool and the data, including the terms of the service.

What you can ask

• Buying a flat: "Find flats of 40–55 m² in Kraków's Podgórze up to 800 000 PLN, cheapest per m² first." (The service has no filter by number of rooms; filter by area instead.)
• Judging an offer's price: "Is this offer a good deal? Show its price history, the lowest price of the last 30 and 90 days, and whether the reduction looks suspicious."
• Checking a developer: "What does this developer build, and how many offers are active in which cities?"
• Market and transaction prices: "How do asking prices in Gdańsk compare with registered transaction prices over the last quarters?"
• Valuation: "Roughly what is a 55 m² flat at this address worth, based on nearby transactions?"
• Comparing cities: "Rank cities by transaction price per m², and show wages and unemployment next to them."

Install

Pick the first option that fits you; they go from no terminal to expert. Supported systems: macOS and Linux. Windows is not supported (the shared request limiter uses fcntl file locks).

1. Claude Desktop, no terminal

1. Download deweloperuch-mcp-.mcpb from the latest release.
2. Double-click it, or drag it into Claude Desktop → Settings → Extensions → Install, then restart Claude Desktop.

Shortened. The full README is on GitHub.