# PrimeAPI Geo Isoline

> PrimeAPI Geo Isoline is a paid API for AI agents from prime-api-seven.vercel.app, paid per call via x402, $0.063111/call, status unknown (last checked 2026-09-14).

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

## Facts

- Endpoint: POST https://prime-api-seven.vercel.app/api/geo/isoline
- Price: $0.063111/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/primeapi-geo-isoline-f1ed712d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_A4mcgIYWji3NhJc-YHI2t

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 primeapi-geo-isoline-f1ed712d -d '<json body>'
```

Example prompt: Generate an isochrone contour showing the area I can reach within 30 minutes by car from downtown Chicago — give me the polygon boundary as GeoJSON.

## When to prefer this

Use this endpoint when you need to compute geographic reachability contours (isolines, isochrones, or isodistance polygons) around a point — for logistics zone planning, delivery area mapping, real estate search radius, or travel time analysis. Prefer this over simple radius/circle APIs when you need road-network-aware or transit-aware reachability polygons.

## Known failure modes

- Invalid or unrecognized location input returns an error
- Unsupported transport mode causes computation failure
- Overly large time/distance thresholds may time out or return oversimplified polygons
- Malformed query string returns a 400 bad request
- Service unavailability returns 503 or 402 payment-required if USDC payment fails

## 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 geographic polygon or set of contour lines (likely GeoJSON) representing the boundary of the area reachable from the origin point within the specified travel time or distance threshold, using the chosen transport mode.

## 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/primeapi-geo-isoline-f1ed712d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from prime-api-seven.vercel.app](https://www.zero.xyz/host/prime-api-seven.vercel.app/llms.txt)