Isopleth API alternative: Korzy vs Isopleth
If you are evaluating the Isopleth API for location and parcel data, this page sets Korzy and Isopleth side by side. Isopleth returns fields such as flood zones, soils, terrain and the power grid for any U.S. coordinate, plus parcel records in some states, over REST and MCP.12 Korzy is an API and MCP server for U.S. parcels and the infrastructure around them. The comparison uses what each publishes about its own product, checked 5 November 2026.
Korzy vs Isopleth: pricing, coverage and access
| Feature | Korzy | Isopleth |
|---|---|---|
| Pricing model | Monthly plans with credits; extra credits in packs | Monthly plans priced in lookups, plus one-off top-ups3 |
| Published entry price | $49/month (Professional, 3,000 credits) | $19/month Starter (20,000 lookups); a matched parcel record costs 5 lookups3 |
| Free trial or free tier | No free trial | Free tier: 1,000 lookups a month, no card3 |
| Stated U.S. coverage | 161M+ parcel records across every U.S. county | Parcels in 35 states plus DC; point fields for every U.S. coordinate14 |
| REST API | Yes, REST with an OpenAPI spec | Yes, REST and JSON1 |
| MCP server | Yes, hosted MCP server, with plugins for Claude Code and Codex | Yes, on the same plans and limits as the REST API13 |
| Owner names | Where published, with include_owner=true at twice the credits | Where the source publishes them and its terms and state law allow reuse4 |
| Infrastructure and site context | Water and sewer service, protected areas and cleanup sites, rail, ports and freight, data-center projects, power plants, regional energy, grid transfer capacity and terrain | Flood zones, soils, terrain, wildfire, climate, the power grid and utilities2 |
| Bulk files and licensing | Not through the API (point and record lookups); dataset licensing and flat-file exports on Enterprise | None found on the pages we reviewed23 |
When Isopleth may fit better
When Korzy may fit better
- You need land and infrastructure context at the same point as the parcel: water and sewer service areas, data-center projects, power plants, rail, ports and freight corridors.
- An AI agent should call the data directly: Korzy runs a hosted MCP server, with a plugin for Claude Code and Codex.
- You want a published self-serve price: plans start at $49 a month, and catalogs and summaries never spend credits.
Real example responses are on the parcel data pages for each county and in the Korzy API reference; plans and credits are on the pricing page.
What teams use Korzy for
Sources for the Isopleth comparison
Statements about Isopleth come from its own public pages, read on 5 November 2026. Statements about Korzy link to Korzy’s plans and prices and API documentation.
- Isopleth home page, isopleth.dev/, checked 5 November 2026.
- Isopleth, About, isopleth.dev/about/, checked 5 November 2026.
- Isopleth, API pricing, isopleth.dev/pricing/, checked 5 November 2026.
- Isopleth docs, Parcels, isopleth.dev/docs/parcels, checked 5 November 2026.
More parcel data API comparisons
Try Korzy on your own addresses
Plans include the API, the MCP server and every dataset. Catalogs and summaries are free, so you can check coverage before you spend credits.