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About

datapolymarket — the data API for Polymarket traders.

datapolymarket is a self-serve API that exposes the live underlying truth behind Polymarket markets — the Chainlink BTC oracle, the daily-high temperature in a city, the cross-exchange spread on a token. Traders use it to find mispricings between Polymarket share prices and where the underlying actually is.

Why datapolymarket exists

Polymarket markets resolve on real-world numbers. The share price between now and resolution doesn't track those numbers tick-for-tick. That gap is where the trade lives. Without good data nobody can see the gap continuously — and most retail traders end up providing it instead of capturing it.

The data sharps use to capture that gap had been locked behind enterprise contracts (Bloomberg, Tardis, Kaiko — $999/mo and up, NDA, sales call). datapolymarket exists to put the slice that matters for Polymarket trading on a self-serve checkout, $49.99/mo.

How it's built

datapolymarket is built and run by traders who use the API every day on their own live Polymarket strategies. Same data, same freshness, same reliability — what we ship to customers is what powers our own bot. No tiered "customer feed", no marketing-grade SLA gap.

What datapolymarket sells

Weather

Real-time station observations + 5-model ensemble forecasts (ECMWF, GFS, ICON, JMA, UKMO) with per-city bias correction. Resolution probability for every active Polymarket weather market across 44 cities.

Crypto

Live BTC, ETH, XRP spot from Binance vs the Chainlink aggregator that resolves the market, plus the Polymarket bid/ask book on YES and NO. Lag in seconds, gap in basis points, every second.

What datapolymarket doesn't promise

We don't promise predictions. We don't promise alpha. We don't promise guaranteed outcomes. We sell sharper inputs — the live underlying truth and the math that turns it into a probability — and you decide what to do with the gap. Markets are uncertain by design; that's exactly why edge exists.

How to start

Three days free, card required, $0 today. Cancel before day 3 — no charge. After that it's $49.99/mo for either dataset, $74.99/mo for both, $319.99/mo for Pro (bias-corrected ensemble + resolution-probability + WebSocket + full archive).

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Where to find datapolymarket