增加资金费率

backend/app/binance.py

@@ -212,6 +212,30 @@ class BinanceFuturesClient:
         sym_set = set(symbols)
         return {t["symbol"]: float(t["price"]) for t in tickers if t["symbol"] in sym_set}
 
+    async def get_premium_index_all(self) -> dict[str, dict]:
+        data = await self._get("/fapi/v1/premiumIndex")
+        if isinstance(data, dict):
+            items = [data]
+        else:
+            items = data or []
+        return {str(x["symbol"]).upper(): x for x in items if x.get("symbol")}
+
+    async def get_funding_rate_history(self, symbol: str, limit: int = 90) -> list[dict]:
+        raw = await self._get(
+            "/fapi/v1/fundingRate",
+            {"symbol": symbol.upper(), "limit": min(limit, 1000)},
+        )
+        rows = []
+        for r in raw or []:
+            rows.append(
+                {
+                    "time": int(r["fundingTime"]),
+                    "rate": float(r["fundingRate"]),
+                    "mark_price": float(r.get("markPrice", 0) or 0),
+                }
+            )
+        return rows
+
     async def get_daily_klines(self, symbol: str, limit: int = 300) -> list[dict]:
         raw = await self._get(
             "/fapi/v1/klines",