Aster Spot API Account (v3 — Testnet)

Base: https://sapi.asterdex-testnet.com. Endpoints signed unless noted.

Account and trades

• GET /api/v3/account (W: 5): No params beyond auth. Returns balances (asset, free, locked).
• GET /api/v3/userTrades (W: 10): symbol (required), orderId, startTime, endTime, limit (default 500, max 1000).

Transfer

• POST /api/v3/asset/wallet/transfer (W: 5): amount, asset, clientTranId (required, unique), kindType (FUTURE_SPOT | SPOT_FUTURE). Returns tranId, status.

Withdraw and API key

• GET /api/v3/aster/withdraw/estimateFee (NONE): chainId, asset. Returns tokenPrice, gasCost, gasUsdValue.
• POST /api/v3/aster/user-withdraw (USER_DATA): See reference for params; returns withdrawId, hash.
• POST /api/v3/getNonce, POST /api/v3/createApiKey: See reference for params.

Payload shapes: reference.md.