Isopleth

Isopleth is a geospatial facts API that returns 351 typed, cited public-data fields for any US coordinate or address. Key features: • Flood zones, terrain, and soil profiles • Power grid, substation distance, and hazard data • Sun, wind, and air quality readings • Tower locations and population details • Parcel records in 35 states plus DC • REST API, JSON responses, and a hosted MCP server Each field includes its value, unit, status, confidence level, source dataset, dataset vintage, license, attribution, and cache TTL, so every result can be traced back to its public origin. Send a single coordinate or address, or batch up to 100 locations per request, and receive consistent structured output in one call. Addresses are geocoded for free, and the API works with common developer stacks. Isopleth connects directly to Claude, ChatGPT, Cursor, and VS Code through its MCP server, so assistants can pull verified location facts without custom integration code. Developers can also call the REST endpoints from any language. The free tier includes 1,000 lookups every month with no credit card required. This tool suits developers building property, insurance, real estate, energy, or site-selection applications, as well as analysts who need reliable location context. Teams use it for risk screening, due diligence, solar and wind feasibility checks, and environmental reporting.