krakenfutures: backfill leverage tier notionals

freqtrade/exchange/krakenfutures.py

@@ -206,6 +206,62 @@ class Krakenfutures(Exchange):
                 logger.warning(f"Could not update funding fees for {pair}.")
         return 0.0
 
+    def get_leverage_tiers(self) -> dict[str, list[dict]]:
+        """
+        Kraken Futures returns leverage tiers with contract-based thresholds.
+        CCXT maps tiers to min/maxNotional using "numNonContractUnits", but many markets
+        only expose "contracts". Fill missing min/maxNotional from contract data and
+        maxPositionSize to keep get_max_leverage functional.
+        """
+        tiers = super().get_leverage_tiers()
+        if not tiers:
+            return tiers
+
+        for pair, pair_tiers in tiers.items():
+            self._fill_leverage_tier_notionals(pair, pair_tiers)
+
+        return tiers
+
+    def _fill_leverage_tier_notionals(self, pair: str, pair_tiers: list[dict]) -> None:
+        if not pair_tiers:
+            return
+        self._fill_missing_min_notional(pair_tiers)
+        self._fill_missing_max_notional(pair, pair_tiers)
+
+    def _fill_missing_min_notional(self, pair_tiers: list[dict]) -> None:
+        for tier in pair_tiers:
+            if tier.get("minNotional") is None:
+                info = tier.get("info") or {}
+                contracts = self._safe_float(info.get("contracts"))
+                if contracts is not None:
+                    tier["minNotional"] = contracts
+
+    def _fill_missing_max_notional(self, pair: str, pair_tiers: list[dict]) -> None:
+        for i in range(len(pair_tiers) - 1):
+            if pair_tiers[i].get("maxNotional") is None:
+                next_min = pair_tiers[i + 1].get("minNotional")
+                if next_min is not None:
+                    pair_tiers[i]["maxNotional"] = next_min
+
+        last = pair_tiers[-1]
+        if last.get("maxNotional") is None:
+            max_notional = self._max_notional_from_market(pair)
+            if max_notional is not None:
+                last["maxNotional"] = max_notional
+            elif last.get("minNotional") is not None:
+                # Avoid None values, even if we cannot infer the real max.
+                last["maxNotional"] = last["minNotional"]
+
+    def _max_notional_from_market(self, pair: str) -> float | None:
+        market = self.markets.get(pair)
+        if not market:
+            return None
+        max_pos = self._safe_float(market.get("info", {}).get("maxPositionSize"))
+        if max_pos is None:
+            return None
+        contract_size = self._safe_float(market.get("contractSize")) or 1.0
+        return max_pos * contract_size
+
     @staticmethod
     def _safe_float(v: Any) -> float | None:
         try:

tests/exchange/test_krakenfutures.py

@@ -24,6 +24,47 @@ def test_krakenfutures_ft_has_overrides():
     assert ft_has["stop_price_type_field"] == "triggerSignal"
 
 
+def test_krakenfutures_get_leverage_tiers_fills_contracts(mocker, default_conf):
+    """Fill missing min/maxNotional from contracts/maxPositionSize in leverage tiers."""
+    mock_markets = {
+        "BTC/USD:USD": {
+            "info": {"maxPositionSize": 1000000},
+            "contractSize": 1.0,
+        }
+    }
+    ex = get_patched_exchange(
+        mocker, default_conf, exchange="krakenfutures", mock_markets=mock_markets
+    )
+    assert isinstance(ex, Krakenfutures)
+
+    sample_tiers = {
+        "BTC/USD:USD": [
+            {
+                "minNotional": None,
+                "maxNotional": None,
+                "maintenanceMarginRate": 0.01,
+                "maxLeverage": 50.0,
+                "info": {"contracts": 0},
+            },
+            {
+                "minNotional": None,
+                "maxNotional": None,
+                "maintenanceMarginRate": 0.02,
+                "maxLeverage": 25.0,
+                "info": {"contracts": 500000},
+            },
+        ]
+    }
+
+    mocker.patch.object(Exchange, "get_leverage_tiers", return_value=sample_tiers)
+    tiers = ex.get_leverage_tiers()
+    pair_tiers = tiers["BTC/USD:USD"]
+    assert pair_tiers[0]["minNotional"] == 0.0
+    assert pair_tiers[0]["maxNotional"] == 500000.0
+    assert pair_tiers[1]["minNotional"] == 500000.0
+    assert pair_tiers[1]["maxNotional"] == 1000000.0
+
+
 def test_krakenfutures_ohlcv_candle_limit_uses_ccxt_limit(mocker, default_conf):
     """Test that OHLCV candle limit follows CCXT feature limit."""
     ex = get_patched_exchange(mocker, default_conf, exchange="krakenfutures")

tests/exchange_online/conftest.py

@@ -569,7 +569,7 @@ EXCHANGES: dict[str, TestExchangeOnlineSetup] = {
         "candle_count": 2000,
         "futures_pair": "BTC/USD:USD",
         "hasQuoteVolumeFutures": False,
-        "leverage_tiers_public": False,
+        "leverage_tiers_public": True,
         "leverage_in_spot_market": False,
     },
 }