fix: prevent crash when distribution summary empty

bindings/bindings.go

@@ -2291,6 +2291,11 @@ func GetDistributionSummary(client *tnclient.Client, queryID int) (string, error
 		return "", errors.Wrap(err, "failed to get distribution summary")
 	}
 
+	// Safety: return empty string if no distribution found
+	if result == nil {
+		return "", nil
+	}
+
 	summary := map[string]any{
 		"distribution_id":        result.DistributionID,
 		"total_fees_distributed": result.TotalFeesDistributed,
@@ -2429,9 +2434,9 @@ func DecodeMarketData(encoded []byte) (string, error) {
 		return "", err
 	}
 
-	// Re-map to local struct for JSON consistency if needed, 
-    // or just return the contractsapi struct serialized.
-    // contractsapi.MarketData is already JSON-annotated.
+	// Re-map to local struct for JSON consistency if needed,
+	// or just return the contractsapi struct serialized.
+	// contractsapi.MarketData is already JSON-annotated.
 	jsonBytes, err := json.Marshal(market)
 	if err != nil {
 		return "", errors.Wrap(err, "failed to marshal market data")

src/trufnetwork_sdk_py/client.py

@@ -29,7 +29,7 @@
 import trufnetwork_sdk_c_bindings.exports as truf_sdk
 import trufnetwork_sdk_c_bindings.go as go
 
-from typing import Any, TypedDict, Literal, cast, overload, Generic, TypeVar
+from typing import Any, TypedDict, Literal, cast, overload, Generic, TypeVar, Optional
 
 from pydantic import BaseModel
 
@@ -2624,12 +2624,12 @@ def sample_lp_rewards(self, query_id: int, block: int, wait: bool = True) -> str
 
         return tx_hash
 
-    def get_distribution_summary(self, query_id: int) -> DistributionSummary:
+    def get_distribution_summary(self, query_id: int) -> Optional[DistributionSummary]:
         """Get fee distribution summary for a market."""
         json_str = truf_sdk.GetDistributionSummary(self.client, query_id)
 
         if not json_str:
-            raise RuntimeError(f"No distribution found for market {query_id}")
+            return None
 
         return cast(DistributionSummary, json.loads(json_str))