diff --git a/config/config2.example.yaml b/config/config2.example.yaml
index 330b73680..ba480d984 100644
--- a/config/config2.example.yaml
+++ b/config/config2.example.yaml
@@ -75,6 +75,7 @@ s3:
   bucket: "test"
 
 exp_pool:
+  enabled: false
   enable_read: false 
   enable_write: false
   persist_path: .chroma_exp_data # The directory.
diff --git a/metagpt/configs/exp_pool_config.py b/metagpt/configs/exp_pool_config.py
index 786558ed9..e2872179f 100644
--- a/metagpt/configs/exp_pool_config.py
+++ b/metagpt/configs/exp_pool_config.py
@@ -4,6 +4,10 @@ from metagpt.utils.yaml_model import YamlModel
 
 
 class ExperiencePoolConfig(YamlModel):
+    enabled: bool = Field(
+        default=False,
+        description="Flag to enable or disable the experience pool. When disabled, both reading and writing are ineffective.",
+    )
     enable_read: bool = Field(default=False, description="Enable to read from experience pool.")
     enable_write: bool = Field(default=False, description="Enable to write to experience pool.")
     persist_path: str = Field(default=".chroma_exp_data", description="The persist path for experience pool.")
diff --git a/metagpt/exp_pool/decorator.py b/metagpt/exp_pool/decorator.py
index 21242277d..777d55ca9 100644
--- a/metagpt/exp_pool/decorator.py
+++ b/metagpt/exp_pool/decorator.py
@@ -50,7 +50,7 @@ def exp_cache(
     """
 
     def decorator(func: Callable[..., ReturnType]) -> Callable[..., ReturnType]:
-        if not config.exp_pool.enable_read:
+        if not config.exp_pool.enabled:
             return func
 
         @functools.wraps(func)
diff --git a/metagpt/exp_pool/manager.py b/metagpt/exp_pool/manager.py
index 1fcabc0d2..b6ae9c0a3 100644
--- a/metagpt/exp_pool/manager.py
+++ b/metagpt/exp_pool/manager.py
@@ -74,7 +74,7 @@ class ExperienceManager(BaseModel):
             exp (Experience): The experience to add.
         """
 
-        if not self.config.exp_pool.enable_write:
+        if not self.config.exp_pool.enabled or not self.config.exp_pool.enable_write:
             return
 
         self.storage.add_objs([exp])
@@ -92,7 +92,7 @@ class ExperienceManager(BaseModel):
             list[Experience]: A list of experiences that match the args.
         """
 
-        if not self.config.exp_pool.enable_read:
+        if not self.config.exp_pool.enabled or not self.config.exp_pool.enable_read:
             return []
 
         nodes = await self.storage.aretrieve(req)
diff --git a/metagpt/exp_pool/schema.py b/metagpt/exp_pool/schema.py
index 627dcbb4e..b119e5850 100644
--- a/metagpt/exp_pool/schema.py
+++ b/metagpt/exp_pool/schema.py
@@ -1,5 +1,5 @@
 """Experience schema."""
-
+import time
 from enum import Enum
 from typing import Optional
 
@@ -67,6 +67,7 @@ class Experience(BaseModel):
     entry_type: EntryType = Field(default=EntryType.AUTOMATIC, description="Type of entry: Manual or Automatic.")
     tag: str = Field(default="", description="Tagging experience.")
     traj: Optional[Trajectory] = Field(default=None, description="Trajectory.")
+    timestamp: Optional[float] = Field(default_factory=time.time)
 
     def rag_key(self):
         return self.req
diff --git a/tests/metagpt/exp_pool/test_decorator.py b/tests/metagpt/exp_pool/test_decorator.py
index 0c02dcdfc..0ca4c6ce1 100644
--- a/tests/metagpt/exp_pool/test_decorator.py
+++ b/tests/metagpt/exp_pool/test_decorator.py
@@ -159,7 +159,7 @@ class TestExpCache:
 
     @pytest.mark.asyncio
     async def test_exp_cache_disabled(self, mock_config, mock_exp_manager):
-        mock_config.exp_pool.enable_read = False
+        mock_config.exp_pool.enabled = False
 
         @exp_cache(manager=mock_exp_manager)
         async def test_func(req):
diff --git a/tests/metagpt/exp_pool/test_manager.py b/tests/metagpt/exp_pool/test_manager.py
index 3fb2aaa6d..4d298a44e 100644
--- a/tests/metagpt/exp_pool/test_manager.py
+++ b/tests/metagpt/exp_pool/test_manager.py
@@ -10,7 +10,7 @@ from metagpt.exp_pool.schema import QueryType
 class TestExperienceManager:
     @pytest.fixture
     def mock_config(self):
-        return Config(llm=LLMConfig(), exp_pool=ExperiencePoolConfig(enable_write=True, enable_read=True))
+        return Config(llm=LLMConfig(), exp_pool=ExperiencePoolConfig(enable_write=True, enable_read=True, enabled=True))
 
     @pytest.fixture
     def mock_storage(self, mocker):