US Weather Alerts

Official US National Weather Service data: active severe-weather alerts and forecast-grid metadata for any US coordinate. Machine-payable per request.

Robinhood Chain

Offers

Offer	Endpoint	Price
Active alerts All active NWS alerts (storms, floods, heat, fire). Filter with ?area=CA (state code), ?severity=Severe, or ?point=38.88,-77.03.	`/m/us-weather/alerts`	0.005 USDG
Point metadata Forecast office, grid, timezone, and forecast URLs for a US coordinate. Append lat,lon to the path, e.g. point/38.8894,-77.0352.	`/m/us-weather/point`	0.005 USDG

Machine-readable: openapi.json with x-payment-info offers.

Try it live

Run the full MPP flow from your browser: catch the 402, sign the payment with your wallet, and watch it settle on-chain.

Pay with an agent

Any MPP or x402-compatible client works. With mppx, payment is automatic:

// x402 exact scheme (permit2) on Robinhood Chain
// 1. GET the endpoint, read the payment-required header (base64 JSON)
// 2. Sign PermitWitnessTransferFrom against Permit2 for the advertised offer
//    (spender = x402ExactPermit2Proxy, witness.to = merchant wallet)
// 3. Retry with the payment-signature header; settlement tx arrives
//    in the payment-response header
const res = await fetch('https://api.meshgateway.co/m/us-weather/alerts', {
  headers: { 'payment-signature': signedPaymentPayload },
})

Or inspect the challenge yourself:

curl -i https://api.meshgateway.co/m/us-weather/alerts
# HTTP/1.1 402 Payment Required
# WWW-Authenticate: Payment id="…", method="evm", intent="charge", …