Tool Execution and Timeout

[diegolovison]

I am working on my "private" project that is an extension of https://github.com/quarkiverse/quarkus-langchain4j/tree/main/samples/mcp-sse-client-server

My mcp-server has the following output, which means that the tool was successfully executed. The tool takes a long time to produce that output and this is expected

{
  "jsonrpc" : "2.0",
  "id" : 2,
  "result" : {
    "isError" : false,
    "content" : [ {
      "text" : "......hide for security reason",
      "type" : "text"
    } ]
  }
}

On my mcp-client, the application then attempts to execute this tool. At 11:35:39, a request is made to an MCP (Model-as-a-service Communication Protocol) server located at http://localhost:8081 to call the security tool.

However, a timeout occurs at 11:36:39, exactly one minute after the initial tool call request. The log shows that a timeout has occurred.

My mcp-server application.properties related to the timeout

quarkus.langchain4j.timeout=1000s
quarkus.vertx.max-worker-execute-time=${quarkus.langchain4j.timeout}

My mcp-client application.properties related to the timeout

quarkus.langchain4j.timeout=5000s
quarkus.rest-client.read-timeout=5000
quarkus.langchain4j.mcp.client.timeout=5000

Log from the mcp-client

2025-07-18 11:35:39,439 DEBUG [io.qua.lan.run.ais.AiServiceMethodImplementationSupport] (executor-thread-1) Attempting to execute tool ToolExecutionRequest { id = null, name = "security", arguments = "{
  "a" : 1,
  "b" : "d"
}" }
2025-07-18 11:36:39,445 DEBUG [io.qua.lan.run.ais.AiServiceMethodImplementationSupport] (executor-thread-1) Result of ToolExecutionRequest { id = null, name = "security", arguments = "{
  "a" : 1,
  "b" : "d"
}" } is {1}
2025-07-18 11:36:39,447 DEBUG [io.qua.lan.run.ais.AiServiceMethodImplementationSupport] (executor-thread-1) Attempting to obtain AI response
2025-07-18 11:36:39,451 INFO  [io.qua.lan.mcp.run.htt.McpHttpClientLogger] (vert.x-eventloop-thread-0) Request:
- method: POST
- url: http://localhost:8081/mcp/messages/ZTBkY2QyMjAtZDhlMy00YjAzLWFjODEtNjBhOWQxYTY2YTMy
- headers: [Accept: application/json], [Content-Type: application/json], [User-Agent: Quarkus REST Client], [content-length: 98]
- body: {"jsonrpc":"2.0","method":"notifications/cancelled","params":{"reason":"Timeout","requestId":"2"}}

I need help because I have no idea what the property is to increase that timeout.

Thanks

[diegolovison]

Set quarkus.langchain4j.mcp.default.tool-execution-timeout=PT10M but still not there

2025-07-18 13:00:50,382 ERROR [io.qua.mut.run.MutinyInfrastructure] (executor-thread-1) Mutiny had to drop the following exception: java.lang.RuntimeException: java.util.concurrent.ExecutionException: io.vertx.core.impl.NoStackTraceTimeoutException: The timeout period of 60000ms has been exceeded while executing POST /mcp/messages/ODk4Y2YzMGYtZTkyZS00OTU4LWFjMWEtMTBlNTNmZjE0YmVk for server null
	at dev.langchain4j.mcp.client.DefaultMcpClient.executeTool(DefaultMcpClient.java:202)
	at dev.langchain4j.mcp.client.McpClient_bSWTlcYZytnXS_1H4EjDDIdVyN4_Synthetic_ClientProxy.executeTool(Unknown Source)
	at dev.langchain4j.mcp.McpToolProvider$DefaultToolExecutor.execute(McpToolProvider.java:218)
	at io.quarkiverse.langchain4j.runtime.aiservice.AiServiceMethodImplementationSupport.executeTool(AiServiceMethodImplementationSupport.java:486)
	at io.quarkiverse.langchain4j.runtime.aiservice.AiServiceMethodImplementationSupport.doImplement(AiServiceMethodImplementationSupport.java:397)
	at io.quarkiverse.langchain4j.runtime.aiservice.AiServiceMethodImplementationSupport.implement(AiServiceMethodImplementationSupport.java:154)
	at io.quarkiverse.langchain4j.sample.chatbot.AiChatService$$QuarkusImpl.chat(Unknown Source)
	at io.quarkiverse.langchain4j.sample.chatbot.AiChatService$$QuarkusImpl_ClientProxy.chat(Unknown Source)
	at io.quarkiverse.langchain4j.sample.chatbot.ChatBotWebSocket.lambda$onMessage$0(ChatBotWebSocket.java:33)
	at io.smallrye.context.impl.wrappers.SlowContextualConsumer.accept(SlowContextualConsumer.java:21)
	at io.smallrye.mutiny.helpers.UniCallbackSubscriber.onItem(UniCallbackSubscriber.java:73)
	at io.smallrye.mutiny.operators.uni.UniDelayOnItem$UniDelayOnItemProcessor.lambda$onItem$0(UniDelayOnItem.java:53)
	at org.jboss.threads.EnhancedQueueExecutor$RunnableScheduledFuture.performTask(EnhancedQueueExecutor.java:3057)
	at org.jboss.threads.EnhancedQueueExecutor$RunnableScheduledFuture.performTask(EnhancedQueueExecutor.java:3047)
	at org.jboss.threads.EnhancedQueueExecutor$AbstractScheduledFuture.run(EnhancedQueueExecutor.java:2902)
	at io.quarkus.vertx.core.runtime.VertxCoreRecorder$15.runWith(VertxCoreRecorder.java:638)
	at org.jboss.threads.EnhancedQueueExecutor$Task.doRunWith(EnhancedQueueExecutor.java:2675)
	at org.jboss.threads.EnhancedQueueExecutor$Task.run(EnhancedQueueExecutor.java:2654)
	at org.jboss.threads.EnhancedQueueExecutor.runThreadBody(EnhancedQueueExecutor.java:1627)
	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1594)
	at org.jboss.threads.DelegatingRunnable.run(DelegatingRunnable.java:11)
	at org.jboss.threads.ThreadLocalResettingRunnable.run(ThreadLocalResettingRunnable.java:11)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.base/java.lang.Thread.run(Thread.java:1447)
Caused by: java.util.concurrent.ExecutionException: io.vertx.core.impl.NoStackTraceTimeoutException: The timeout period of 60000ms has been exceeded while executing POST /mcp/messages/ODk4Y2YzMGYtZTkyZS00OTU4LWFjMWEtMTBlNTNmZjE0YmVk for server null
	at java.base/java.util.concurrent.CompletableFuture.wrapInExecutionException(CompletableFuture.java:347)
	at java.base/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:442)
	at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2142)
	at io.smallrye.context.CompletableFutureWrapper.get(CompletableFutureWrapper.java:161)
	at dev.langchain4j.mcp.client.DefaultMcpClient.executeTool(DefaultMcpClient.java:197)
	... 23 more
Caused by: io.vertx.core.impl.NoStackTraceTimeoutException: The timeout period of 60000ms has been exceeded while executing POST /mcp/messages/ODk4Y2YzMGYtZTkyZS00OTU4LWFjMWEtMTBlNTNmZjE0YmVk for server null

[diegolovison]

Fixed: #1626