Real Weather Data, On-chain.
We turn numbers that are only shown into verified data you can settle on.
Buy verified weather data for any city and settle in XRP from any XRPL wallet. Create an account to keep your purchase history - or stay wallet-only. AI agents trade with no account at all.
Feed transparency · one-minute watch
METAR is not a clock
We turn numbers that are only shown into verified data you can settle on.
Prediction markets settle on airport METAR. We check it every minute and publish every late report, silent station and correction. Trust the data, not the brand.
See METAR WatchLive global map
Open full map →Key features
About the protocol →11 source feeds - METAR airport observations, KWeather and MET Norway direct, plus seven national weather-agency models retrieved through one aggregator - merged with median + MAD outlier rejection. Anomalies are excluded, never averaged in.
Every index snapshot is SHA-256 hashed, and the hash is anchored on-chain - retried each cycle until it lands, with current coverage shown on the snapshots page. Re-download, re-hash, verify - trustlessly.
WDI and TDI are deterministic: same inputs, same number, every time. The rule does not change between runs, and every run's hash is anchored on-chain. Its parameters stay proprietary - what you get is the verdict and its reasons.
People buy on the web with a wallet; AI agents buy over REST with the same quote → pay → claim flow. Members keep history on the server.
Products
30-DAY 25 USD · YEARLY 200 · METERED 0.04 / CALL · PAID IN XRPEvery product ships with the verdict oracle, on-chain anchored proof and the rain (Y/N) criterion by default - a Web3 weather oracle for parametric climate insurance, weather-linked hedging and prediction-market settlement.
From the start date, 30 or 365 days of live index observations, 16-day forecasts and the verdict oracle over dedicated API endpoints - realtime, history and forecast, for the whole term. The on-chain payment is the subscription contract. This is the product to buy if you need values while a period is still running.
Prepaid credits on a single API key, drawn down 0.04 USD per call - no term, no city list to fix in advance. Every city and every endpoint is reachable with the same key, and you top up when the balance runs low. Choose this when the call volume is unknown or spread across many cities; choose the subscription when you read the same cities every hour.
Open a condition - 'Seoul at or above 35°C at 14:00 UTC on 15 Aug' - and receive one of three answers after the hour passes: met, not met, or withheld, each with a report of the reasons. The verdict is the product; the rule behind it stays proprietary. Included with a subscription covering the city, or paid per determination from metered credits - which is also how an AI agent opens and pays for one on its own.