← US Weather (NWS)
weather by fourzerotwo
Active alerts by state
Weather alerts in force for a US state or marine area.
Active alerts by state Free
Weather alerts in force for a US state or marine area.
- cost
- Free then $0.002 / call
- MCP tool
- us-weather__alerts-active
- method
- GET
Free up to 50 calls a day over MCP (500 with a free key), then $0.002 per call by card credit or USDC. Free key · Pay by card
GET https://fourzerotwo.si/v1/us-weather/alerts-active
| Param | Type | Description |
|---|---|---|
| area | string | State code, e.g. CA |
# free: send a free key from https://fourzerotwo.si/free curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/us-weather/alerts-active?area=CA" # no key: returns 402 with the price, for x402 agents curl -i "https://fourzerotwo.si/v1/us-weather/alerts-active?area=CA"
by fourzerotwo
Report this endpoint
Use it from an AI agent (MCP)
Add the server once, then ask for this data in plain English. The agent finds the endpoint with search_apis and runs it with call_api.
{
"mcpServers": {
"fourzerotwo": { "type": "http", "url": "https://fourzerotwo.si/mcp" }
}
}
# the call the agent makes
call_api {"tool": "us-weather__alerts-active", "arguments": {"area":"CA"}}
More from US Weather (NWS)
- Point metadata — Forecast office, grid and nearby stations for a US lat,lon.
- 7-day forecast — Twice-daily forecast periods for a grid square.
- Hourly forecast — Hourly forecast for a grid square.
- Active alerts at a point — Weather alerts in force at a lat,lon.
- Latest observation — Latest observed conditions at a weather station.
Source: NOAA National Weather Service. Public domain.