diff --git a/experimental/fluent/agentic-langchain4j/src/main/java/io/serverlessworkflow/fluent/agentic/langchain4j/ConditionalAgentServiceImpl.java b/experimental/fluent/agentic-langchain4j/src/main/java/io/serverlessworkflow/fluent/agentic/langchain4j/ConditionalAgentServiceImpl.java
index 2b3b0e2c..0aff4aaf 100644
--- a/experimental/fluent/agentic-langchain4j/src/main/java/io/serverlessworkflow/fluent/agentic/langchain4j/ConditionalAgentServiceImpl.java
+++ b/experimental/fluent/agentic-langchain4j/src/main/java/io/serverlessworkflow/fluent/agentic/langchain4j/ConditionalAgentServiceImpl.java
@@ -15,11 +15,14 @@
  */
 package io.serverlessworkflow.fluent.agentic.langchain4j;
 
+import dev.langchain4j.agentic.agent.AgentRequest;
+import dev.langchain4j.agentic.agent.AgentResponse;
 import dev.langchain4j.agentic.internal.AgentExecutor;
 import dev.langchain4j.agentic.scope.AgenticScope;
 import dev.langchain4j.agentic.workflow.ConditionalAgentService;
 import java.util.Arrays;
 import java.util.List;
+import java.util.function.Consumer;
 import java.util.function.Predicate;
 
 public class ConditionalAgentServiceImpl<T>
@@ -45,6 +48,18 @@ public ConditionalAgentService<T> subAgents(List<AgentExecutor> agentExecutors)
     return this.subAgents(agentExecutors.toArray());
   }
 
+  @Override
+  public ConditionalAgentService<T> beforeAgentInvocation(Consumer<AgentRequest> consumer) {
+    throw new UnsupportedOperationException(
+        "Feature not implemented yet. See: https://github.com/serverlessworkflow/sdk-java/issues/836");
+  }
+
+  @Override
+  public ConditionalAgentService<T> afterAgentInvocation(Consumer<AgentResponse> consumer) {
+    throw new UnsupportedOperationException(
+        "Feature not implemented yet. See: https://github.com/serverlessworkflow/sdk-java/issues/836");
+  }
+
   @Override
   public ConditionalAgentService<T> subAgents(Predicate<AgenticScope> condition, Object... agents) {
     this.workflowBuilder.tasks(
diff --git a/experimental/fluent/agentic-langchain4j/src/main/java/io/serverlessworkflow/fluent/agentic/langchain4j/LoopAgentServiceImpl.java b/experimental/fluent/agentic-langchain4j/src/main/java/io/serverlessworkflow/fluent/agentic/langchain4j/LoopAgentServiceImpl.java
index d7bc5b17..c4ac8328 100644
--- a/experimental/fluent/agentic-langchain4j/src/main/java/io/serverlessworkflow/fluent/agentic/langchain4j/LoopAgentServiceImpl.java
+++ b/experimental/fluent/agentic-langchain4j/src/main/java/io/serverlessworkflow/fluent/agentic/langchain4j/LoopAgentServiceImpl.java
@@ -15,11 +15,15 @@
  */
 package io.serverlessworkflow.fluent.agentic.langchain4j;
 
+import dev.langchain4j.agentic.agent.AgentRequest;
+import dev.langchain4j.agentic.agent.AgentResponse;
 import dev.langchain4j.agentic.internal.AgentExecutor;
 import dev.langchain4j.agentic.scope.AgenticScope;
 import dev.langchain4j.agentic.workflow.LoopAgentService;
 import io.serverlessworkflow.fluent.agentic.LoopAgentsBuilder;
 import java.util.List;
+import java.util.function.BiPredicate;
+import java.util.function.Consumer;
 import java.util.function.Predicate;
 
 public class LoopAgentServiceImpl<T> extends AbstractAgentService<T, LoopAgentService<T>>
@@ -47,6 +51,18 @@ public LoopAgentService<T> exitCondition(Predicate<AgenticScope> exitCondition)
     return this;
   }
 
+  @Override
+  public LoopAgentService<T> exitCondition(BiPredicate<AgenticScope, Integer> biPredicate) {
+    this.loopAgentsBuilder.exitCondition(biPredicate);
+    return this;
+  }
+
+  @Override
+  public LoopAgentService<T> testExitAtLoopEnd(boolean b) {
+    throw new UnsupportedOperationException(
+        "Feature not implemented yet. See: https://github.com/serverlessworkflow/sdk-java/issues/836");
+  }
+
   @Override
   public LoopAgentService<T> subAgents(Object... agents) {
     this.loopAgentsBuilder.subAgents(agents);
@@ -60,4 +76,16 @@ public LoopAgentService<T> subAgents(List<AgentExecutor> agentExecutors) {
     this.workflowBuilder.tasks(t -> t.loop(this.loopAgentsBuilder));
     return this;
   }
+
+  @Override
+  public LoopAgentService<T> beforeAgentInvocation(Consumer<AgentRequest> consumer) {
+    throw new UnsupportedOperationException(
+        "Feature not implemented yet. See: https://github.com/serverlessworkflow/sdk-java/issues/836");
+  }
+
+  @Override
+  public LoopAgentService<T> afterAgentInvocation(Consumer<AgentResponse> consumer) {
+    throw new UnsupportedOperationException(
+        "Feature not implemented yet. See: https://github.com/serverlessworkflow/sdk-java/issues/836");
+  }
 }
diff --git a/experimental/fluent/agentic-langchain4j/src/main/java/io/serverlessworkflow/fluent/agentic/langchain4j/ParallelAgentServiceImpl.java b/experimental/fluent/agentic-langchain4j/src/main/java/io/serverlessworkflow/fluent/agentic/langchain4j/ParallelAgentServiceImpl.java
index 00f6e1c2..607c0617 100644
--- a/experimental/fluent/agentic-langchain4j/src/main/java/io/serverlessworkflow/fluent/agentic/langchain4j/ParallelAgentServiceImpl.java
+++ b/experimental/fluent/agentic-langchain4j/src/main/java/io/serverlessworkflow/fluent/agentic/langchain4j/ParallelAgentServiceImpl.java
@@ -15,12 +15,15 @@
  */
 package io.serverlessworkflow.fluent.agentic.langchain4j;
 
+import dev.langchain4j.agentic.agent.AgentRequest;
+import dev.langchain4j.agentic.agent.AgentResponse;
 import dev.langchain4j.agentic.internal.AgentExecutor;
 import dev.langchain4j.agentic.workflow.ParallelAgentService;
 import io.serverlessworkflow.impl.ExecutorServiceHolder;
 import java.util.List;
 import java.util.concurrent.Executor;
 import java.util.concurrent.ExecutorService;
+import java.util.function.Consumer;
 
 public class ParallelAgentServiceImpl<T> extends AbstractAgentService<T, ParallelAgentService<T>>
     implements ParallelAgentService<T> {
@@ -44,6 +47,18 @@ public ParallelAgentService<T> subAgents(List<AgentExecutor> agentExecutors) {
     return this.subAgents(agentExecutors.toArray());
   }
 
+  @Override
+  public ParallelAgentService<T> beforeAgentInvocation(Consumer<AgentRequest> consumer) {
+    throw new UnsupportedOperationException(
+        "Feature not implemented yet. See: https://github.com/serverlessworkflow/sdk-java/issues/836");
+  }
+
+  @Override
+  public ParallelAgentService<T> afterAgentInvocation(Consumer<AgentResponse> consumer) {
+    throw new UnsupportedOperationException(
+        "Feature not implemented yet. See: https://github.com/serverlessworkflow/sdk-java/issues/836");
+  }
+
   @Override
   public ParallelAgentService<T> executor(Executor executor) {
     if (!(executor instanceof ExecutorService)) {
diff --git a/experimental/fluent/agentic-langchain4j/src/main/java/io/serverlessworkflow/fluent/agentic/langchain4j/SequentialAgentServiceImpl.java b/experimental/fluent/agentic-langchain4j/src/main/java/io/serverlessworkflow/fluent/agentic/langchain4j/SequentialAgentServiceImpl.java
index 1fc25707..184dbb78 100644
--- a/experimental/fluent/agentic-langchain4j/src/main/java/io/serverlessworkflow/fluent/agentic/langchain4j/SequentialAgentServiceImpl.java
+++ b/experimental/fluent/agentic-langchain4j/src/main/java/io/serverlessworkflow/fluent/agentic/langchain4j/SequentialAgentServiceImpl.java
@@ -15,9 +15,12 @@
  */
 package io.serverlessworkflow.fluent.agentic.langchain4j;
 
+import dev.langchain4j.agentic.agent.AgentRequest;
+import dev.langchain4j.agentic.agent.AgentResponse;
 import dev.langchain4j.agentic.internal.AgentExecutor;
 import dev.langchain4j.agentic.workflow.SequentialAgentService;
 import java.util.List;
+import java.util.function.Consumer;
 
 public class SequentialAgentServiceImpl<T>
     extends AbstractAgentService<T, SequentialAgentService<T>>
@@ -42,4 +45,16 @@ public SequentialAgentService<T> subAgents(List<AgentExecutor> agentExecutors) {
     this.subAgents(agentExecutors.toArray());
     return this;
   }
+
+  @Override
+  public SequentialAgentService<T> beforeAgentInvocation(Consumer<AgentRequest> consumer) {
+    throw new UnsupportedOperationException(
+        "Feature not implemented yet. See: https://github.com/serverlessworkflow/sdk-java/issues/836");
+  }
+
+  @Override
+  public SequentialAgentService<T> afterAgentInvocation(Consumer<AgentResponse> consumer) {
+    throw new UnsupportedOperationException(
+        "Feature not implemented yet. See: https://github.com/serverlessworkflow/sdk-java/issues/836");
+  }
 }
diff --git a/experimental/fluent/agentic/src/main/java/io/serverlessworkflow/fluent/agentic/AgentAdapters.java b/experimental/fluent/agentic/src/main/java/io/serverlessworkflow/fluent/agentic/AgentAdapters.java
index 53b53d2d..d8a2d015 100644
--- a/experimental/fluent/agentic/src/main/java/io/serverlessworkflow/fluent/agentic/AgentAdapters.java
+++ b/experimental/fluent/agentic/src/main/java/io/serverlessworkflow/fluent/agentic/AgentAdapters.java
@@ -18,21 +18,20 @@
 import static dev.langchain4j.agentic.internal.AgentUtil.agentsToExecutors;
 
 import dev.langchain4j.agentic.internal.AgentExecutor;
-import dev.langchain4j.agentic.internal.AgentSpecification;
 import dev.langchain4j.agentic.scope.AgenticScope;
 import dev.langchain4j.agentic.scope.DefaultAgenticScope;
 import io.serverlessworkflow.api.types.func.LoopPredicateIndex;
 import java.util.List;
+import java.util.function.BiPredicate;
 import java.util.function.Function;
 import java.util.function.Predicate;
-import java.util.stream.Stream;
 
 public final class AgentAdapters {
 
   private AgentAdapters() {}
 
   public static List<AgentExecutor> toExecutors(Object... agents) {
-    return agentsToExecutors(Stream.of(agents).map(AgentSpecification.class::cast).toArray());
+    return agentsToExecutors(agents);
   }
 
   public static Function<DefaultAgenticScope, Object> toFunction(AgentExecutor exec) {
@@ -42,4 +41,9 @@ public static Function<DefaultAgenticScope, Object> toFunction(AgentExecutor exe
   public static LoopPredicateIndex<AgenticScope, Object> toWhile(Predicate<AgenticScope> exit) {
     return (model, item, idx) -> !exit.test(model);
   }
+
+  public static LoopPredicateIndex<AgenticScope, Object> toWhile(
+      BiPredicate<AgenticScope, Integer> exit) {
+    return (model, item, idx) -> !exit.test(model, idx);
+  }
 }
diff --git a/experimental/fluent/agentic/src/main/java/io/serverlessworkflow/fluent/agentic/LoopAgentsBuilder.java b/experimental/fluent/agentic/src/main/java/io/serverlessworkflow/fluent/agentic/LoopAgentsBuilder.java
index 01b71015..758ccc65 100644
--- a/experimental/fluent/agentic/src/main/java/io/serverlessworkflow/fluent/agentic/LoopAgentsBuilder.java
+++ b/experimental/fluent/agentic/src/main/java/io/serverlessworkflow/fluent/agentic/LoopAgentsBuilder.java
@@ -22,6 +22,7 @@
 import io.serverlessworkflow.fluent.func.FuncTaskItemListBuilder;
 import java.util.List;
 import java.util.UUID;
+import java.util.function.BiPredicate;
 import java.util.function.ObjIntConsumer;
 import java.util.function.Predicate;
 import java.util.stream.IntStream;
@@ -65,6 +66,11 @@ public LoopAgentsBuilder exitCondition(Predicate<AgenticScope> exitCondition) {
     return this;
   }
 
+  public LoopAgentsBuilder exitCondition(BiPredicate<AgenticScope, Integer> exitCondition) {
+    this.forTask.withWhile(AgentAdapters.toWhile(exitCondition), AgenticScope.class);
+    return this;
+  }
+
   public ForTaskFunction build() {
     this.forTask.setDo(this.funcDelegate.build());
     return this.forTask;
diff --git a/pom.xml b/pom.xml
index 2913db0b..aab4e255 100644
--- a/pom.xml
+++ b/pom.xml
@@ -94,7 +94,7 @@
         <version.org.hibernate.validator>9.0.1.Final</version.org.hibernate.validator>
         <version.org.glassfish.expressly>6.0.0</version.org.glassfish.expressly>
         <!-- Experimental modules from langchain4j -->
-        <version.dev.langchain4j.beta>1.5.0-beta11</version.dev.langchain4j.beta>
+        <version.dev.langchain4j.beta>1.6.0-beta12</version.dev.langchain4j.beta>
         <!-- Base langchain4j version -->
         <version.dev.langchain4j>1.6.0</version.dev.langchain4j>