nws-active-alerts

Return current U.S. National Weather Service active alerts for a state or territory as compact structured JSON.

Price: $0.01 USDC equivalent
Endpoint: POST /v1/nws-active-alerts
Network: Base mainnet · eip155:8453
Asset: USDC
MCP tool: nws-active-alerts
External payability: PASS · 2026-10-08T19:55:01.298Z

When an agent should use it

current NWS weather alerts
live weather warnings for an autonomous agent
US weather alert data without an API key

Input schema

{
  "type": "object",
  "properties": {
    "area": {
      "type": "string",
      "pattern": "^[A-Za-z]{2}$"
    },
    "limit": {
      "type": "integer",
      "minimum": 1,
      "maximum": 20
    }
  },
  "required": [
    "area"
  ],
  "additionalProperties": false
}

Example request

{
  "area": "FL",
  "limit": 10
}

Example output

{
  "area": "FL",
  "alerts": [
    {
      "event": "Severe Thunderstorm Warning",
      "severity": "Severe"
    }
  ]
}

x402 flow

POST /v1/nws-active-alerts
→ HTTP 402 + PAYMENT-REQUIRED
→ buyer authorizes locally
→ retry same request with PAYMENT-SIGNATURE
→ one governed execution + machine-readable JSON

Discovery: OpenAPI · x402 · llms.txt

A valid 402/payability probe is operational evidence, not proof of independent demand, future settlement, or semantic correctness.