Change Log

2026-10-08

• Documentation enhancements (no API behavior changes):
  • POST /sapi/v1/w3w/wallet/prediction/trade/get-quote: removed the approximate 1.5 USDT MARKET minimum and the statement that LIMIT orders have no minimum. The minimum order amount is set by the server and may change, so no fixed value is documented. It is checked on BUY orders by amount and on SELL orders by share quantity, for both order types. A successful quote does not guarantee that an order is accepted or filled. Also documented that a priceLimit that is not on the price tick is truncated down instead of being rejected.
  • GET /sapi/v1/w3w/wallet/prediction/market/detail and GET /sapi/v1/w3w/wallet/prediction/market/list: documented the values of status and markets[].tradingStatus, that markets[].tradingStatus and not status decides whether new orders may be attempted, the meaning of decimalPrecision, and the outcomes[].winner field that is returned after resolution.
  • GET /sapi/v1/w3w/wallet/prediction/position/settled-history: documented that there is no separate cancelled, invalid or refunded status and how a split payout of a resolved market is represented.

2026-09-10

• Documentation enhancements (no API behavior changes):
  • All 28 Prediction Trading endpoints (market-data, account, positions, trading, redemption, transfers): corrected Request Weight(IP) from 200 to 1 to match measured production behavior.
  • POST /sapi/v1/w3w/wallet/prediction/trade/place-order-bundle: clarified that accountType only determines the settlement/reference account, not the funding source — the actual debited balance is controlled by fundingSource. Also clarified that orderType only accepts MARKET/LIMIT and must not be combined with timeInForce (e.g. LIMIT_GTC is not a valid value).
  • POST /sapi/v1/w3w/wallet/prediction/trade/place-order-bundle: documented three additional cases that return the generic -3026 Your input param is invalid.: a well-formed walletAddress not owned by the calling UID, a malformed (non-address) walletAddress (an empty string instead returns -1102 naming the field), and omitting priceLimit when orderType=LIMIT.

2026-08-14

• New endpoints:
  • POST /sapi/v1/w3w/wallet/prediction/otc/blocktrade/create: create an OTC blocktrade as the maker.
  • POST /sapi/v1/w3w/wallet/prediction/otc/blocktrade/list: list the maker's own blocktrades.
  • POST /sapi/v1/w3w/wallet/prediction/otc/blocktrade/detail: query a blocktrade by orderId.
  • POST /sapi/v1/w3w/wallet/prediction/otc/blocktrade/events: paginated blocktrade lifecycle/settlement events.
  • POST /sapi/v1/w3w/wallet/prediction/otc/blocktrade/preview: preview an open blocktrade by secretToken.
  • POST /sapi/v1/w3w/wallet/prediction/otc/blocktrade/fulfil: fulfil a maker blocktrade as the taker.
  • POST /sapi/v1/w3w/wallet/prediction/otc/blocktrade/remove: cancel open/unsettled blocktrades.
  • POST /sapi/v1/w3w/wallet/prediction/otc/blocktrade/reserved-balances: query reserved USDT/share balances.
  • POST /sapi/v1/w3w/wallet/prediction/deposit/apply: move funds from the bound CeDeFi MPC wallet to a CEX account.
  • POST /sapi/v1/w3w/wallet/prediction/withdraw/apply: withdraw funds from a CEX account to the bound CeDeFi MPC wallet.
  • All of the above are restricted to authorized market makers.

2026-06-16

• Documentation enhancements (no API behavior changes):
  • POST /sapi/v1/w3w/wallet/prediction/trade/batch-cancel: removed the unused per-item cancelInfoList[i].vendor field (server auto-fills predict_fun). Added Known Issues section covering the bracket-encoding incompatibility with mainstream HTTP libraries (Python requests, Java URI, Go net/url, Node url) — request returns -1022 Signature for this request is not valid because clients percent-encode [/] while the server signs over raw bytes; included Python / Java / Go workarounds.
  • POST /sapi/v1/w3w/wallet/prediction/transfer/inbound: added explicit warning that the endpoint requires SAS authorization (returns -31003 if SAS is not enabled).
  • POST /sapi/v1/w3w/wallet/prediction/trade/get-quote: documented the MARKET order minimum (amountIn ≥ ~1.5 USDT, varies by market depth; LIMIT orders are not subject to this minimum).
  • GET /sapi/v1/w3w/wallet/prediction/transfer/status: corrected the response example — the success terminal state is COMPLETED, not SUCCESS. Added the full set of status values (COMPLETED, FAILED, PROCESSING, PENDING).

2026-05-25

• Initial release of Prediction Trading APIs.