Changelog

The first published version of this documentation. The API has no version in its paths; changes that need a client update will be announced here first.

• Crypto Up/Down rounds of BTC, ETH and BNB in 5-minute, 15-minute, 1-hour and 1-day lengths; the next ten 5m and 15m rounds trade before they start.
• Event markets resolved through UMA's Optimistic Oracle, traded with the same endpoints (up is YES, down is NO).
• Signed orders: PMO2 and PMO3 for limit orders and sales, PMO4 for market buys by budget (budgetBuys of GET /api/funds), PMS1 for splits and merges.
• Batches of up to 15 orders, cancel all, idempotency keys on every write.
• Taker fee of 7% × p × (1 − p) and a 20% maker rebate, read live from GET /api/fees; liquidity rewards on the 5m and 15m markets and on event markets.
• WebSocket subscriptions for a round (both books, trades, volume) and the account.