Prediction Market Screensaver
The Prediction Market screensaver is a live odds board of the world's biggest prediction markets — the probabilities the crowd is pricing on current events — from Polymarket's key-less public API. It's free, runs in your browser, display only, and ESC exits.
How the Prediction Market screensaver works
The saver fetches the most active markets from Polymarket's public API, with no key.
For each market it reads the current prices, which represent the crowd's implied probability of each outcome.
Markets are drawn as rows with the question and a probability bar — the odds the market is pricing right now.
The board is sorted by trading volume and refreshes every few minutes as the odds move.
A worked example
The board reads off live questions with their odds — 57% on one outcome, a long-shot at 6% — the bars shifting as traders move the market, a snapshot of what the crowd thinks will happen.
Settings & tips
- Sort by orders markets by today's volume or by overall size.
- Accent recolours the bars.
- Background sets the board backdrop.
Frequently asked questions
- Are the odds live?
- Yes. The probabilities come from live Polymarket prices and refresh every few minutes as trading moves them.
- Are these real predictions?
- They're the market's implied probabilities — what traders are collectively pricing — not a guarantee of any outcome.
- Does it need a key?
- No. Polymarket's public API is free and key-less; the saver only needs an internet connection.
- Is this gambling or advice?
- No. It's a read-only display of public market odds for curiosity, with no betting and no advice.
- Is it free?
- Yes — free, no download, in your browser.