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Zonio Developers

Introduction

Zonio turns the fragmented world of Polish land data (cadastre, local and general zoning plans, environmental protection, the power grid, the property market) into one consistent, national dataset. The developer platform gives you that dataset in three forms:

MCP server

For AI agents. Connect Claude, Cursor or your own agent and search parcels in plain language.

REST API

For applications. JSON and GeoJSON over HTTPS, documented with OpenAPI 3.1.

Vector tiles

For maps. PMTiles for every polygon layer, ready for MapLibre.

Why this is hard without Zonio

To answer "can I build a 5 MW solar farm on this plot?" in Poland you normally need to:

  1. find the parcel in the national cadastre (EGiB) and its exact geometry;
  2. find out whether one of ~2,477 gminas has adopted a local plan (MPZP) for it, locate that gmina's own geoportal, and read the zone symbol;
  3. check the new general plan (Plan Ogólny), the legacy Studium, and the statutory pre-emption rights of KOWR and the State Forests;
  4. intersect it with Natura 2000 and protected landscapes, flood-risk maps, heritage registers, mining areas, aviation obstacle surfaces and groundwater protection zones;
  5. measure the distance to the nearest 110 kV substation and look up how much connection capacity the distribution operator has published there (how that works);
  6. compare against recent land sales in the national price register.

Each of those is a different public service with a different format, coordinate system, paging quirk and update cycle. Zonio fetches all of them, normalises them into one PostGIS database in Poland's national coordinate grid, and keeps them fresh. You make one call.

Who it is for

  • AI and agent builders who want their assistant to answer real-estate and energy-siting questions about Poland with real data instead of guesses.
  • Renewable-energy developers screening thousands of hectares for PV, wind, BESS, agri-PV and biogas.
  • Real-estate and investment teams running acquisition pipelines and due diligence.
  • PropTech and GIS products that need a parcel-level data backbone for Poland.

Zonio for people

The same data powers the Zonio app: a national map with every layer, parcel reports and gmina profiles for investors, developers and advisers. Read why we built it, see the features and pricing, or browse the layer atlas.

Next steps

Docs for agents

This site is also published for language models: /llms.txt is an index of every page and /llms-full.txt is the whole site as one Markdown file. Point your coding agent at it when building on Zonio.