# Snowpack Weather Alerts & Forecast

> Snowpack Weather Alerts & Forecast is a paid API for AI agents from snowpack.fyi, paid per call via x402, $3.99/call, status unknown (last checked 2026-10-03).

Returns live weather, snowpack data, avalanche danger, ski patrol alerts, and resort run conditions for 63 lidar-mapped ski resorts.

## Facts

- Endpoint: POST https://snowpack.fyi/api/x402?utm_source=zero.xyz
- Price: $3.99/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-03
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/snowpack-weather-alerts-forecast-a22102f4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_y-u-2IMDcteyuqN9VHnp5

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 snowpack-weather-alerts-forecast-a22102f4 -d '<json body>'
```

Example prompt: What are the current snow conditions, avalanche danger level, and any active ski patrol alerts at Park City Mountain Resort right now?

## When to prefer this

Choose this endpoint when you need real-time, lidar-accurate ski resort conditions including avalanche danger and ski patrol safety data — not just generic weather. It covers 63 specific resorts with verified patrol and SOS integration, making it superior to general weather APIs for ski-specific safety and planning decisions.

## Known failure modes

- Resort not found or not among the 63 supported resorts — returns an error or empty result
- Stale data if weather feeds or patrol systems are temporarily offline
- Authentication failure if API key is invalid or payment not processed
- Rate limiting if called too frequently beyond tier allowance
- Partial data if lidar or snow sensors are malfunctioning at a specific resort

## How this service works

Lidar-mapped mountains and runs, live weather and snow, avalanche danger, verified ski patrol and SOS, and your skiing measured, at sixty-three resorts.

## Output

A JSON object containing the resort's current weather data, snow depth and snowpack measurements, avalanche danger rating, open/closed run status derived from lidar mapping, active ski patrol alerts, SOS status, and forecast data — keyed by a session/API key with a tier indicator (e.g. 'pro').

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "key": "sp1.…",
  "tier": "pro"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/snowpack-weather-alerts-forecast-a22102f4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from snowpack.fyi](https://www.zero.xyz/host/snowpack.fyi/llms.txt)