GET /api/balance

Balances are segmented per (currency, network) pair — deposits on a chain can only be withdrawn on that same chain.

Query (both optional): currency — USDT | USDC; network — TRX, ETH, BNB, SOL (testnets: TRX_SHASTA, SEP, tBNB, SOL_DEVNET).

Response:

• With BOTH currency and network: the single balance row for that pair — currency, network, available, pending (decimal strings), lastUpdatedAt (zero balances if no row exists yet).
• Otherwise: { balances: [...] } — every balance row the account holds (optionally filtered), each with currency, network, available, pending, withdrawalEnabled, networkFee (current per-chain withdrawal fee, null when withdrawals are disabled for the pair), maxWithdrawable (available minus the network fee, floored at 0), and lastUpdatedAt.

Currently only USDT on TRX is enabled for deposits and withdrawals; other pairs appear once enabled.

Authentication: Authorization: <API key> — send the raw key (no Bearer prefix required). Bearer <API key> is still accepted for compatibility.