# Site Climate Altitude Effects

> Site Climate Altitude Effects is a paid API for AI agents from site-climate.x402tookit.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-21).

Returns elevation at a lat/lon coordinate and derived atmospheric effects: air pressure, boiling point of water, air density, and oxygen availability relative to sea level.

## Facts

- Endpoint: GET https://site-climate.x402tookit.com/altitude-effects?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/site-climate-altitude-effects-9b6b02a7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ML-MYKu5QxlsVWNQS7e4I

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 site-climate-altitude-effects-9b6b02a7
```

Example prompt: What are the altitude effects at the coordinates for La Paz, Bolivia — latitude -16.5, longitude -68.15? I want to know the elevation, air pressure, boiling point of water, air density, and how much oxygen is available compared to sea level.

## When to prefer this

Choose this endpoint when you need elevation-derived atmospheric data (pressure, oxygen, boiling point, air density) for a specific geographic coordinate — especially for use cases involving cooking at altitude, physiological acclimatization, equipment engineering at altitude, or any scenario where knowing how the atmosphere differs from sea level at a location matters. Prefer over general weather endpoints when the focus is on altitude effects rather than current or forecast weather conditions.

## Known failure modes

- Missing or out-of-range lat/lon parameters returns an error
- Coordinates in ocean or remote areas may have no elevation data available
- NASA grid elevation data may differ slightly from local ground truth
- Service may return degraded:true if elevation source is unavailable or uncertain
- Network timeout if external elevation data source is slow

## How this service works

Elevation at a location and what it does: air pressure, boiling point of water, air density and oxygen versus sea level.

## Output

Returns the elevation in meters and feet (from NASA grid data), atmospheric pressure in kPa, ISA temperature in °C, air density in kg/m³, boiling point of water in both Celsius and Fahrenheit, and oxygen availability as a percentage relative to sea level. Also includes source, attribution, and any relevant disclaimer fields.

## 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": "number",
       "description": "Latitude, -90 to 90"
      },
      "lon": {
       "type": "number",
       "description": "Longitude, -180 to 180"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "summary": {
       "type": [
        "null",
        "string"
       ]
      },
      "verdict": {
       "type": [
        "null",
        "string"
       ]
      },
      "degraded": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "latitude": {
       "type": [
        "null",
        "number"
       ]
      },
      "longitude": {
       "type": [
        "null",
        "number"
       ]
      },
      "sourceUrl": {
       "type": [
        "null",
        "string"
       ]
      },
      "disclaimer": {
       "type": [
        "null",
        "string"
       ]
      },
      "elevationM": {
       "type": [
        "null",
        "number"
       ]
      },
      "notChecked": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "attribution": {
       "type": [
        "null",
        "string"
       ]
      },
      "elevationFt": {
       "type": [
        "null",
        "number"
       ]
      },
      "pressureKpa": {
       "type": [
        "null",
        "number"
       ]
      },
      "airDensityKgM3": {
       "type": [
        "null",
        "number"
       ]
      },
      "elevationSource": {
       "type": [
  
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/site-climate-altitude-effects-9b6b02a7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from site-climate.x402tookit.com](https://www.zero.xyz/host/site-climate.x402tookit.com/llms.txt)