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.

Get a Korzy API key Compare all U.S. parcel data APIs

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	Hosted MCP server (OAuth or API key, 6 tools); plugins for Claude and ChatGPT; agent plugin for Claude Code, Codex and Hermes	Yes, on the same plans and limits as the REST API¹³
Owner names	Available on request (opt-in per organization), where published; through enrich at 2 credits per parcel instead of 1 credit	Where the source publishes them and its terms and state law allow reuse⁴
Infrastructure and site context	Water and sewer service, flood zones, wetlands, protected areas and cleanup sites, rail, ports and freight, data-center projects, power plants, grid capacity and terrain	Flood zones, soils, terrain, wildfire, climate, the power grid and utilities²
Bulk files and licensing	Not through the API (lookups, records and enrichment of up to 25 parcels per request); dataset licensing and flat-file exports on Enterprise	None found on the pages we reviewed²³

When Isopleth may fit better

You need soils or wildfire fields at a coordinate.²
You want a free tier to start, with no card.³
You want a source, license and vintage on every returned value.²

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 (OAuth or API key, 6 tools), with plugins for Claude and ChatGPT and an agent plugin for Claude Code, Codex and Hermes.
You want a published self-serve price: plans start at $49 a month, and the field catalog never spends 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 they serve. The field catalog is free, so you can see what each request returns and costs before you spend credits.

Get a Korzy API key See Korzy pricing Korzy MCP server docs