Ensemble Forecasts

Probabilistic weather from the Open-Meteo ensemble, seasonal, and previous-runs APIs: individual ensemble members, 9-month seasonal outlooks, and forecast-vs-actual comparisons. Machine-payable per request.

Robinhood Chain

Offers

Offer	Endpoint	Price
Ensemble members Per-member forecasts from global ensemble models. Pass ?latitude=52.5&longitude=13.4&hourly=temperature_2m&models=icon_seamless.	`/m/open-meteo-ensemble/members`	0.01 USDG
Previous model runs Compare current forecasts with earlier model runs. Pass ?latitude=52.5&longitude=13.4&hourly=temperature_2m_previous_day1.	`/m/open-meteo-ensemble/previous-runs`	0.005 USDG
Seasonal outlook Up to 9-month seasonal forecast. Pass ?latitude=52.5&longitude=13.4&daily=temperature_2m_max.	`/m/open-meteo-ensemble/seasonal`	0.01 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/open-meteo-ensemble/members', {
  headers: { 'payment-signature': signedPaymentPayload },
})

Or inspect the challenge yourself:

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