# Geo Elevation Lookup (x402)

> Geo Elevation Lookup (x402) is a paid API for AI agents from workspace-x402-paywall.onrender.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-11).

Returns terrain elevation data for a given latitude/longitude coordinate pair, paid per-call via USDC on x402.

## Facts

- Endpoint: GET https://workspace-x402-paywall.onrender.com/geo/elevation?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/geo-elevation-lookup-x402-43f53cc2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iTfesEMSkfnHW_lYZDzRJ

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 geo-elevation-lookup-x402-43f53cc2
```

Example prompt: What's the elevation at latitude 36.4555 and longitude -116.8660? I need the terrain height above sea level for that coordinate.

## When to prefer this

Choose this endpoint when you need a quick, cheap ($0.005 USDC) pay-per-call elevation lookup for a specific lat/lon without committing to a subscription-based mapping API. Ideal for agents doing one-off or low-volume geospatial enrichment, drone path planning, or terrain analysis where a micropayment model via x402 on Base or Solana is acceptable.

## Known failure modes

- Missing lat or lon parameter returns a 400 error
- Invalid or out-of-range coordinate values may return an error or null elevation
- Payment not provided or insufficient USDC results in a 402 Payment Required response
- Coordinates over ocean or unmapped terrain may return zero or null elevation
- Service unavailable on render.com cold-start may cause timeout

## How this service works

66 pay-per-call APIs: AI text/image generation ($0.01), Polymarket odds, crypto prices, DeFi yields, FX rates, weather, IP/geo, FBI wanted, SEC tickers, clinical trials, 250M academic papers, Stack Overflow, meme-coin launchpads (pump.fun, Clanker, Four.meme, SunPump), tokenized stocks, Solana top 100, and 40+ more. $0.005/call standard. USDC on Base and Solana via x402.

## Output

Returns an object containing elevation data (height above sea level in meters) for the provided coordinate. Optional fields parameter allows requesting specific sub-fields from the response.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "lat",
      "lon"
     ],
     "properties": {
      "lat": {
       "type": "string",
       "description": "Requires a decimal latitude float between -90 and 90"
      },
      "lon": {
       "type": "string",
       "description": "Requires a decimal longitude float between -180 and 180"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/geo-elevation-lookup-x402-43f53cc2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from workspace-x402-paywall.onrender.com](https://www.zero.xyz/host/workspace-x402-paywall.onrender.com/llms.txt)