# Active US Weather Alerts by State (NWS)

> Active US Weather Alerts by State (NWS) is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-01).

Returns active National Weather Service weather alerts (warnings, watches, advisories) for a given US state

## Facts

- Endpoint: POST https://twin.unykorn.org/geo/weather-alerts?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/active-us-weather-alerts-by-state-nws-3081a9bf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_byi8lOdvGCOo-6FP9Irif

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 active-us-weather-alerts-by-state-nws-3081a9bf -d '<json body>'
```

Example prompt: What active NWS weather alerts — warnings, watches, and advisories — are currently in effect for Florida? Show me up to 50 results.

## When to prefer this

Use this endpoint when you need real-time, official NWS weather alert data for a specific US state, especially for safety-critical applications, travel planning, or monitoring severe weather events. Prefer this over general weather forecast endpoints when you specifically need official government-issued warnings, watches, or advisories rather than forecasted conditions.

## Known failure modes

- Missing or invalid state code returns validation error
- State with no active alerts returns empty result set
- NWS upstream service outage may return error or stale data
- Limit parameter outside 1-100 range rejected with validation error

## How this service works

Active US weather alerts by state (NWS): warnings, watches, advisories — Genesis402 / UnyKorn Operator Network

## Output

A list of active NWS weather alerts for the specified state, including alert type (warning, watch, or advisory), affected area, event name, severity, onset and expiry times, and descriptive text — up to the requested limit (default 25, max 100).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "params": {
   "type": "object",
   "properties": {
    "limit": {
     "type": "integer",
     "maximum": 100,
     "minimum": 1,
     "description": "optional: max rows (default 25, max 100)"
    },
    "state": {
     "type": "string",
     "description": "required 2-letter US state, e.g. FL"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "type": "us-weather-alerts",
  "receipt": {
   "tx_hash": "0x<64hex>",
   "amount_usd": 0.002,
   "receipt_id": "g402-<16hex>"
  },
  "sources": [
   {
    "ok": true,
    "name": "<source>"
   }
  ],
  "limitations": "<text>",
  "generated_at": "<iso time>",
  "evidence_hash": "sha256:<64hex>"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/active-us-weather-alerts-by-state-nws-3081a9bf/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from twin.unykorn.org](https://www.zero.xyz/host/twin.unykorn.org/llms.txt)