diff --git a/src/api/Elastic.Documentation.Api.Infrastructure/Adapters/AskAi/LlmGatewayStreamTransformer.cs b/src/api/Elastic.Documentation.Api.Infrastructure/Adapters/AskAi/LlmGatewayStreamTransformer.cs
index d12ae3541..4f47ee656 100644
--- a/src/api/Elastic.Documentation.Api.Infrastructure/Adapters/AskAi/LlmGatewayStreamTransformer.cs
+++ b/src/api/Elastic.Documentation.Api.Infrastructure/Adapters/AskAi/LlmGatewayStreamTransformer.cs
@@ -74,9 +74,10 @@ protected override async Task ProcessStreamAsync(PipeReader reader, PipeWriter w
 			"tool_call" when messageData.TryGetProperty("toolCalls", out var toolCalls) =>
 				TransformToolCall(id, timestamp, toolCalls),
 
-			"tool_message" when messageData.TryGetProperty("toolCallId", out var toolCallId)
-				&& messageData.TryGetProperty("result", out var result) =>
-				new AskAiEvent.ToolResult(id, timestamp, toolCallId.GetString()!, result.GetString()!),
+			// Frontend only uses tool_result to show "Analyzing..." status - result content not displayed
+			// Skip sending the large payload (~30KB) to prevent CloudFront OAC buffering issues
+			"tool_message" when messageData.TryGetProperty("toolCallId", out var toolCallId) =>
+				new AskAiEvent.ToolResult(id, timestamp, toolCallId.GetString()!, ""),
 
 			"agent_end" =>
 				new AskAiEvent.ConversationEnd(id, timestamp),
diff --git a/tests/Elastic.Documentation.Api.Infrastructure.Tests/Adapters/AskAi/StreamTransformerTests.cs b/tests/Elastic.Documentation.Api.Infrastructure.Tests/Adapters/AskAi/StreamTransformerTests.cs
index 384ffaaa2..9eeadeeae 100644
--- a/tests/Elastic.Documentation.Api.Infrastructure.Tests/Adapters/AskAi/StreamTransformerTests.cs
+++ b/tests/Elastic.Documentation.Api.Infrastructure.Tests/Adapters/AskAi/StreamTransformerTests.cs
@@ -247,7 +247,8 @@ public async Task TransformAsyncWithRealLlmGatewayPayloadParsesAllEventTypes()
 		events[4].Should().BeOfType<AskAiEvent.ToolResult>();
 		var toolResult = events[4] as AskAiEvent.ToolResult;
 		toolResult!.ToolCallId.Should().Be("tool1");
-		toolResult.Result.Should().Contain("Found 10 docs");
+		// Result is intentionally empty - payload stripped to prevent CloudFront OAC buffering issues
+		toolResult.Result.Should().BeEmpty();
 
 		// Event 6: ai_message
 		events[5].Should().BeOfType<AskAiEvent.MessageComplete>();