diff --git a/agentscope-extensions/agentscope-extensions-agui/src/main/java/io/agentscope/core/agui/adapter/AguiAdapterConfig.java b/agentscope-extensions/agentscope-extensions-agui/src/main/java/io/agentscope/core/agui/adapter/AguiAdapterConfig.java
index 8870e2689e..a5c4042736 100644
--- a/agentscope-extensions/agentscope-extensions-agui/src/main/java/io/agentscope/core/agui/adapter/AguiAdapterConfig.java
+++ b/agentscope-extensions/agentscope-extensions-agui/src/main/java/io/agentscope/core/agui/adapter/AguiAdapterConfig.java
@@ -30,6 +30,7 @@ public class AguiAdapterConfig {
     private final boolean emitStateEvents;
     private final boolean emitToolCallArgs;
     private final boolean enableReasoning;
+    private final boolean enableActingChunk;
     private final Duration runTimeout;
     private final String defaultAgentId;
 
@@ -38,6 +39,7 @@ private AguiAdapterConfig(Builder builder) {
         this.emitStateEvents = builder.emitStateEvents;
         this.emitToolCallArgs = builder.emitToolCallArgs;
         this.enableReasoning = builder.enableReasoning;
+        this.enableActingChunk = builder.enableActingChunk;
         this.runTimeout = builder.runTimeout;
         this.defaultAgentId = builder.defaultAgentId;
     }
@@ -82,6 +84,18 @@ public boolean isEnableReasoning() {
         return enableReasoning;
     }
 
+    /**
+     * Check if intermediate acting chunk emissions should be included.
+     *
+     * <p>When enabled, intermediate tool execution outputs (such as progress)
+     * will be streamed to the frontend.
+     *
+     * @return true if acting chunks should be included
+     */
+    public boolean isEnableActingChunk() {
+        return enableActingChunk;
+    }
+
     /**
      * Get the run timeout duration.
      *
@@ -127,6 +141,7 @@ public static class Builder {
         private boolean emitStateEvents = true;
         private boolean emitToolCallArgs = true;
         private boolean enableReasoning = false;
+        private boolean enableActingChunk = false;
         private Duration runTimeout = Duration.ofMinutes(10);
         private String defaultAgentId;
 
@@ -178,6 +193,20 @@ public Builder enableReasoning(boolean enableReasoning) {
             return this;
         }
 
+        /**
+         * Set whether to enable acting chunk emissions.
+         *
+         * <p>When enabled, tools can emit intermediate chunks (e.g., Custom events for progress
+         * or real-time logs) during execution. Default is false.
+         *
+         * @param enableActingChunk true to enable acting chunks
+         * @return This builder
+         */
+        public Builder enableActingChunk(boolean enableActingChunk) {
+            this.enableActingChunk = enableActingChunk;
+            return this;
+        }
+
         /**
          * Set the run timeout duration.
          *
diff --git a/agentscope-extensions/agentscope-extensions-agui/src/main/java/io/agentscope/core/agui/adapter/AguiAgentAdapter.java b/agentscope-extensions/agentscope-extensions-agui/src/main/java/io/agentscope/core/agui/adapter/AguiAgentAdapter.java
index 2314e72b9d..936d3b1f30 100644
--- a/agentscope-extensions/agentscope-extensions-agui/src/main/java/io/agentscope/core/agui/adapter/AguiAgentAdapter.java
+++ b/agentscope-extensions/agentscope-extensions-agui/src/main/java/io/agentscope/core/agui/adapter/AguiAgentAdapter.java
@@ -102,6 +102,7 @@ public Flux<AguiEvent> run(RunAgentInput input) {
                             StreamOptions.builder()
                                     .eventTypes(EventType.ALL)
                                     .incremental(true)
+                                    .includeActingChunk(config.isEnableActingChunk())
                                     .build();
 
                     // Track state for event conversion
diff --git a/agentscope-extensions/agentscope-extensions-agui/src/test/java/io/agentscope/core/agui/adapter/AguiAdapterConfigTest.java b/agentscope-extensions/agentscope-extensions-agui/src/test/java/io/agentscope/core/agui/adapter/AguiAdapterConfigTest.java
index f33eb70ffc..9383818e62 100644
--- a/agentscope-extensions/agentscope-extensions-agui/src/test/java/io/agentscope/core/agui/adapter/AguiAdapterConfigTest.java
+++ b/agentscope-extensions/agentscope-extensions-agui/src/test/java/io/agentscope/core/agui/adapter/AguiAdapterConfigTest.java
@@ -39,6 +39,7 @@ void testDefaultConfig() {
         assertTrue(config.isEmitStateEvents());
         assertTrue(config.isEmitToolCallArgs());
         assertFalse(config.isEnableReasoning()); // Default should be false
+        assertFalse(config.isEnableActingChunk());
         assertEquals(Duration.ofMinutes(10), config.getRunTimeout());
         assertNull(config.getDefaultAgentId());
     }
@@ -51,6 +52,8 @@ void testBuilderWithDefaults() {
         assertEquals(ToolMergeMode.MERGE_FRONTEND_PRIORITY, config.getToolMergeMode());
         assertTrue(config.isEmitStateEvents());
         assertTrue(config.isEmitToolCallArgs());
+        assertFalse(config.isEnableReasoning());
+        assertFalse(config.isEnableActingChunk());
         assertEquals(Duration.ofMinutes(10), config.getRunTimeout());
     }
 
@@ -95,6 +98,31 @@ void testBuilderEmitToolCallArgs() {
         assertTrue(configEnabled.isEmitToolCallArgs());
     }
 
+    @Test
+    void testBuilderEnableReasoning() {
+        AguiAdapterConfig configDisabled =
+                AguiAdapterConfig.builder().enableReasoning(false).build();
+
+        assertFalse(configDisabled.isEnableReasoning());
+
+        AguiAdapterConfig configEnabled = AguiAdapterConfig.builder().enableReasoning(true).build();
+
+        assertTrue(configEnabled.isEnableReasoning());
+    }
+
+    @Test
+    void testBuilderEnableActingChunk() {
+        AguiAdapterConfig configDisabled =
+                AguiAdapterConfig.builder().enableActingChunk(false).build();
+
+        assertFalse(configDisabled.isEnableActingChunk());
+
+        AguiAdapterConfig configEnabled =
+                AguiAdapterConfig.builder().enableActingChunk(true).build();
+
+        assertTrue(configEnabled.isEnableActingChunk());
+    }
+
     @Test
     void testBuilderRunTimeout() {
         Duration customTimeout = Duration.ofMinutes(30);
@@ -133,6 +161,7 @@ void testBuilderFullConfiguration() {
                         .emitStateEvents(false)
                         .emitToolCallArgs(false)
                         .enableReasoning(true)
+                        .enableActingChunk(true)
                         .runTimeout(Duration.ofHours(1))
                         .defaultAgentId("my-agent")
                         .build();
@@ -141,6 +170,7 @@ void testBuilderFullConfiguration() {
         assertFalse(config.isEmitStateEvents());
         assertFalse(config.isEmitToolCallArgs());
         assertTrue(config.isEnableReasoning());
+        assertTrue(config.isEnableActingChunk());
         assertEquals(Duration.ofHours(1), config.getRunTimeout());
         assertEquals("my-agent", config.getDefaultAgentId());
     }
diff --git a/agentscope-extensions/agentscope-spring-boot-starters/agentscope-agui-spring-boot-starter/src/main/java/io/agentscope/spring/boot/agui/common/AguiProperties.java b/agentscope-extensions/agentscope-spring-boot-starters/agentscope-agui-spring-boot-starter/src/main/java/io/agentscope/spring/boot/agui/common/AguiProperties.java
index a2edda5af0..c83575b5bb 100644
--- a/agentscope-extensions/agentscope-spring-boot-starters/agentscope-agui-spring-boot-starter/src/main/java/io/agentscope/spring/boot/agui/common/AguiProperties.java
+++ b/agentscope-extensions/agentscope-spring-boot-starters/agentscope-agui-spring-boot-starter/src/main/java/io/agentscope/spring/boot/agui/common/AguiProperties.java
@@ -38,6 +38,7 @@
  *     agent-id-header: X-Agent-Id
  *     enable-path-routing: true
  *     enable-reasoning: false
+ *     enable-acting-chunk: false
  * </pre>
  */
 @ConfigurationProperties(prefix = "agentscope.agui")
@@ -73,6 +74,14 @@ public class AguiProperties {
      */
     private boolean enableReasoning = false;
 
+    /**
+     * Whether to enable acting chunk emissions.
+     *
+     * <p>When enabled, tools can emit intermediate chunks (e.g., Custom events for progress
+     * or real-time logs) during execution.
+     */
+    private boolean enableActingChunk = false;
+
     /** Default agent ID to use when not specified in the request. */
     private String defaultAgentId = "default";
 
@@ -176,6 +185,14 @@ public void setEnableReasoning(boolean enableReasoning) {
         this.enableReasoning = enableReasoning;
     }
 
+    public boolean isEnableActingChunk() {
+        return enableActingChunk;
+    }
+
+    public void setEnableActingChunk(boolean enableActingChunk) {
+        this.enableActingChunk = enableActingChunk;
+    }
+
     public String getDefaultAgentId() {
         return defaultAgentId;
     }
diff --git a/agentscope-extensions/agentscope-spring-boot-starters/agentscope-agui-spring-boot-starter/src/main/java/io/agentscope/spring/boot/agui/mvc/AgentscopeAguiMvcAutoConfiguration.java b/agentscope-extensions/agentscope-spring-boot-starters/agentscope-agui-spring-boot-starter/src/main/java/io/agentscope/spring/boot/agui/mvc/AgentscopeAguiMvcAutoConfiguration.java
index e74d5a91b0..abd44cf272 100644
--- a/agentscope-extensions/agentscope-spring-boot-starters/agentscope-agui-spring-boot-starter/src/main/java/io/agentscope/spring/boot/agui/mvc/AgentscopeAguiMvcAutoConfiguration.java
+++ b/agentscope-extensions/agentscope-spring-boot-starters/agentscope-agui-spring-boot-starter/src/main/java/io/agentscope/spring/boot/agui/mvc/AgentscopeAguiMvcAutoConfiguration.java
@@ -81,6 +81,7 @@ public AguiMvcController aguiMvcController(
                         .emitStateEvents(props.isEmitStateEvents())
                         .emitToolCallArgs(props.isEmitToolCallArgs())
                         .enableReasoning(props.isEnableReasoning())
+                        .enableActingChunk(props.isEnableActingChunk())
                         .defaultAgentId(props.getDefaultAgentId())
                         .build();
 
diff --git a/agentscope-extensions/agentscope-spring-boot-starters/agentscope-agui-spring-boot-starter/src/main/java/io/agentscope/spring/boot/agui/webflux/AgentscopeAguiWebFluxAutoConfiguration.java b/agentscope-extensions/agentscope-spring-boot-starters/agentscope-agui-spring-boot-starter/src/main/java/io/agentscope/spring/boot/agui/webflux/AgentscopeAguiWebFluxAutoConfiguration.java
index 23513f2b42..67c8dfdeb7 100644
--- a/agentscope-extensions/agentscope-spring-boot-starters/agentscope-agui-spring-boot-starter/src/main/java/io/agentscope/spring/boot/agui/webflux/AgentscopeAguiWebFluxAutoConfiguration.java
+++ b/agentscope-extensions/agentscope-spring-boot-starters/agentscope-agui-spring-boot-starter/src/main/java/io/agentscope/spring/boot/agui/webflux/AgentscopeAguiWebFluxAutoConfiguration.java
@@ -84,6 +84,7 @@ public AguiWebFluxHandler aguiWebFluxHandler(
                         .emitStateEvents(props.isEmitStateEvents())
                         .emitToolCallArgs(props.isEmitToolCallArgs())
                         .enableReasoning(props.isEnableReasoning())
+                        .enableActingChunk(props.isEnableActingChunk())
                         .defaultAgentId(props.getDefaultAgentId())
                         .build();