Aireon serves data on every Swiss parcel, keyed by its EGRID: zoning, buildings, location scores, GWR records, OEREB documents and valuations. Use it over REST or from an AI assistant through MCP.
Quickstart
Find a parcel and value it in two calls, no token.
Authentication
Which endpoints are open and how to get access to the rest.
aireon-mcp
Connect Claude, ChatGPT or Gemini to Aireon data.
RES API reference
Parcels, buildings, zoning, scores and GWR.
revenoo API reference
Income-property and land valuation by EGRID.
Machine-readable
- llms.txt and llms-full.txt index these pages for agents; append
/index.mdto any page URL for its Markdown. - RES OpenAPI 3.1: res.aireon.ch/api-docs/public/openapi.json
- revenoo OpenAPI 3.1: revenoo.aireon.ch/api/openapi
- These docs over MCP:
https://docs.aireon.ch/mcp