实现OKX单笔期权币本位与USDT桥复利(中控只读,不改Gate)

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/exchange/okx_options_lib.py

@@ -734,9 +734,19 @@ def build_option_chain(
     itm_only: bool = True,
     itm_max_dist_usd: float = 30.0,
     index_px: float | None = None,
+    margin_mode: str | None = None,
+    inst_family: str | None = None,
 ) -> dict[str, Any]:
     u = (underlying or "ETH").upper()
-    family = f"{u}-USD_UM"
+    if inst_family:
+        family = str(inst_family).strip()
+    else:
+        try:
+            from lib.options.options_margin_mode_lib import inst_family_for_underlying
+
+            family = inst_family_for_underlying(u, margin_mode=margin_mode)
+        except Exception:
+            family = f"{u}-USD_UM"
     uly = f"{u}-USD"
     idx = index_px if index_px is not None else fetch_index_price(ex, uly)
     now_ms = time.time() * 1000
@@ -838,6 +848,8 @@ def build_option_chain(
         "underlying": u,
         "index_px": idx,
         "inst_family": family,
+        "margin_mode": "usdc" if "_UM" in family.upper() else "coin",
+        "premium_ccy": "USDC" if "_UM" in family.upper() else u,
         "expiries": exp_list,
         "instruments_count": len(instruments),
     }