# ApexAPI Geo Isoline

> ApexAPI Geo Isoline is a paid API for AI agents from apex-api-gamma.vercel.app, paid per call via x402, $0.063111/call, status unknown (last checked 2026-10-11).

Generates geographic isoline (isochrone/isodistance) contours around a point based on travel time or distance

## Facts

- Endpoint: POST https://apex-api-gamma.vercel.app/api/geo/isoline?utm_source=zero.xyz
- Price: $0.063111/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/apexapi-geo-isoline-0ac36b4c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_K7Bty5EGt2hwCuABzmOHU

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability apexapi-geo-isoline-0ac36b4c -d '<json body>'
```

Example prompt: Generate an isoline showing every area reachable within 20 minutes by car from coordinates 40.7128, -74.0060 in New York.

## When to prefer this

Use this endpoint when you need to compute reachable-area contours (isochrones or isodistance rings) around a geographic point — for example, to define delivery zones, service catchment areas, or travel-time buffers. Prefer it over simple radius circles when road network or pedestrian path accuracy matters.

## Known failure modes

- Invalid or missing origin coordinates return a 400 error
- Unsupported transport mode causes a validation error
- Very large time/distance thresholds may time out or return oversized polygons
- Coordinates outside supported map data coverage return empty or partial results
- Malformed query string causes parsing failure

## How this service works

Crypto, AI, Social Media, Finance, Weather, Tools &amp; more. Pay per call in USDC on Base. No API keys.

## Output

Returns a GeoJSON polygon or multipolygon geometry representing the boundary of the reachable area (isochrone or isodistance contour) around the input origin point, encoded as geographic coordinates.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "description": "Search query or input parameter"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "description": "API response data"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/apexapi-geo-isoline-0ac36b4c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apex-api-gamma.vercel.app](https://www.zero.xyz/host/apex-api-gamma.vercel.app/llms.txt)