# May 2026 ## [May 28, 2026] Added Create Agent Sub-account API; Get Sub-account List: Added agent Type Enum Value **New API:** - `/api/v3/user/sub-account/agent-create` Create a dedicated sub-account for an AI Agent instance Interface: - `/api/v3/user/sub-list` Changes: - Added `agent` enum value to `type` response parameter: Agent Sub-account ## [May 26, 2026] Added Withdrawal Address Book and Cancel Withdrawal APIs **New APIs:** - `/api/v3/account/withdraw-address` Query the withdrawal address book bound to the account - `/api/v3/account/cancel-withdrawal` Cancel a withdrawal request within the cooling-off period ## [May 26, 2026] Fill Channel: Updated category Push Field Enum Values to Lowercase ### websocket Channel: - `fill` (UTA) Changes: - Updated `category` push field enum values to lowercase: `spot` / `margin` / `usdt-futures` / `coin-futures` / `usdc-futures` ## [May 21, 2026] Get Sub-account List: Updated type Field Enum Values Interface: - `/api/v3/user/sub-list` Changes: - Updated `type` response field enum values to lowercase: `normal` Regular Sub-account / `virtual` Virtual Sub-account / `custodian` Custodial Sub-account ## [May 19, 2026] UTA Isolated Margin Support: Added marginMode Parameter Across Trade, Position, and WebSocket Interfaces ### REST Interface: - `/api/v3/trade/place-order` - `/api/v3/position/current-position` - `/api/v3/account/adjust-account-mode` Changes: - Added `marginMode` String request parameter to `place-order`: Margin mode (`crossed` / `isolated`). Defaults to `crossed` if not provided. Available for futures only. - Updated `positionBalance` and `unrealisedPnl` response parameter descriptions in `current-position`: In isolated margin mode, these fields reflect isolated position-level values. - Added `isolated` enum value to `mode` request parameter in `adjust-account-mode`: Enables switching to isolated margin mode. ### WebSocket Channels: - `place-order` (UTA) - `position` (UTA) Changes: - Added `marginMode` String request parameter to `place-order` channel: Margin mode (`crossed` / `isolated`). Defaults to `crossed` if not provided. Available for futures only. - Added enum description for `marginMode` push parameter in `position` channel: `crossed` / `isolated`. ## [May 19, 2026] WebSocket Depth Channels: checksum Field Removed ### websocket **Channels affected:** - Depth: `books` / `books1` / `books5` / `books50` - RPI Depth: `rpi-books` / `rpi-books1` / `rpi-books5` / `rpi-books50` Changes: - The `checksum` push parameter has been **removed** from the above depth channels. Please use `seq` and `pseq` for order book consistency verification instead. ## [May 19, 2026] SBE Channels: Added sts and category Fields ### websocket (SBE) Interface: - SBE Depth50 (`books50`) - SBE BBO (`books1`) - SBE Public Trade (`publicTrade`) Changes: - Added `sts` uint64 push field: Stream service push timestamp (µs) - Added `category` uint8 push field: Product line (`spot` / `usdt-futures` / `coin-futures` / `usdc-futures`) Demo trading launch date: April 30, 2026.
Live trading launch date: May 19, 2026. ## [May 14, 2026] Added P2P Merchant APIs **New APIs:** - `GET /api/v3/p2p/ad-list` Get public ad list - `GET /api/v3/p2p/exchange-rate` Get exchange rate - `POST /api/v3/p2p/fee-simulate` Fee simulate (pre-check fees) - `GET /api/v3/p2p/ad-limit` Get ad limit info - `POST /api/v3/p2p/ad-create` Create ad - `POST /api/v3/p2p/ad-update` Update ad - `POST /api/v3/p2p/ad-operate` Operate ad (publish / delist / remove) - `GET /api/v3/p2p/ad-info` Get ad info - `GET /api/v3/p2p/my-ads` Get my ads - `GET /api/v3/p2p/pending-orders` Get pending orders - `GET /api/v3/p2p/all-orders` Get all orders - `GET /api/v3/p2p/order-info` Get order info - `POST /api/v3/p2p/order-pay` Confirm payment - `POST /api/v3/p2p/order-release` Release asset - `GET /api/v3/p2p/user-info` Get user info - `GET /api/v3/p2p/currencies` Get currencies - `GET /api/v3/p2p/pay-method` Get pay methods - `GET /api/v3/p2p/balance` Get balance ## [May 12, 2026] Delta-Neutral Mode: Account Mode Switch and New Delta Info API Interface: - `/api/v3/account/adjust-account-mode` - `/api/v3/account/settings` - `/api/v3/account/delta-info` (new) Changes: - `adjust-account-mode`: Added `delta` enum to `mode` request parameter: Delta-neutral mode - `settings`: Added `isolated` and `delta` enums to `accountLevel` response field: Isolated margin mode / Delta-neutral mode - Added new API `/api/v3/account/delta-info`: Get delta equity ratio, thresholds, and per-coin net position ratios for Delta-neutral mode accounts ## [May 12, 2026] Close All Positions: Added X-CHANNEL-API-CODE Support Interface: - `/api/v3/trade/close-positions` Changes: - This interface now supports the `X-CHANNEL-API-CODE` HTTP request header for broker rebate tracking. ## [May 8, 2026] Copy Trading: Added Max Transferable, Transfer, and Transfer Record APIs **New APIs:** - `/api/v3/copy/futures/max-transferable` Get maximum transferable amount and available balance for the lead account - `/api/v3/copy/futures/transfer` Transfer funds into or out of the lead account - `/api/v3/copy/futures/transfer-record` Query lead account transfer history ## [May 7, 2026] WebSocket: Added connId to subscription and trade operation responses ### websocket Changes: - All **public channels** (subscribe/unsubscribe responses): Added top-level `connId` (Connection ID) field - All **private channels** (subscribe/unsubscribe responses): Added top-level `connId` field - **Trade operation responses** (`place-order` / `cancel-order` / `batch-place` / `batch-cancel` / `modify-order` / `batch-modify`): Added `connId` field - Note: ping/pong messages and normal data push messages do **not** carry `connId` ## [May 7, 2026] Order Book Channel: Added maxDepth field to push data ### websocket Changes: - `books` channel: Added `maxDepth` field to push data ## [May 6, 2026] Broker Sub-Account API Key: permType Enum Values Updated Interface: - `POST /api/v3/broker/create-sub-apikey` - `POST /api/v3/broker/modify-sub-apikey` - `GET /api/v3/broker/query-sub-apikey` Changes: - `permType` parameter/response field: enum values changed from `Read/Write` / `Read-only` to `read_write` / `read_only`