Prediohq offers a REST and MCP API to convert Spain's legacy SOAP-based cadastre system into structured JSON. The service addresses inefficiencies in the 2003-era Catastro API, which uses outdated XML and lacks machine-readable formats. Prediohq normalizes data across urban and rural properties, providing versioned outputs with predictable errors.

Users access data via reference codes, coordinates, or addresses, with a free tier of 250 monthly credits. The API emphasizes resilience, serving cached 'stale' data if the official source fails. Pricing is usage-based, with costs decreasing at scale.

The tool integrates environmental data like flood zones and Natura 2000 areas, aiding due diligence. It excludes Basque and Navarre regions due to separate cadastre systems. The service adheres to the DGC's public license but disclaims official endorsement.