diff --git a/metagpt/actions/action.py b/metagpt/actions/action.py
index 9c7fb06e1..ba1bb48de 100644
--- a/metagpt/actions/action.py
+++ b/metagpt/actions/action.py
@@ -14,6 +14,7 @@ from pydantic import BaseModel, Field
 from tenacity import retry, stop_after_attempt, wait_random_exponential
 
 from metagpt.actions.action_output import ActionOutput
+from metagpt.actions.action_node import ActionNode
 from metagpt.llm import LLM
 from metagpt.logs import logger
 from metagpt.provider.base_gpt_api import BaseGPTAPI
@@ -29,11 +30,8 @@ class Action(BaseModel):
     llm: BaseGPTAPI = Field(default_factory=LLM, exclude=True)
     context = ""
     prefix = ""  # aask*时会加上prefix，作为system_message
-    profile = ""  # FIXME: USELESS
     desc = ""  # for skill manager
-    nodes = []
-    # content: Optional[str] = None
-    # instruct_content: Optional[str] = None
+    node: ActionNode = Field(default_factory=ActionNode)
 
     # builtin variables
     builtin_class_name: str = ""
@@ -58,10 +56,9 @@ class Action(BaseModel):
             obj_dict.pop("llm")
         return obj_dict
 
-    def set_prefix(self, prefix, profile):
+    def set_prefix(self, prefix):
         """Set prefix for later usage"""
         self.prefix = prefix
-        self.profile = profile
         return self
 
     def __str__(self):
diff --git a/metagpt/actions/search_and_summarize.py b/metagpt/actions/search_and_summarize.py
index aa4d0f654..3f110c370 100644
--- a/metagpt/actions/search_and_summarize.py
+++ b/metagpt/actions/search_and_summarize.py
@@ -148,8 +148,7 @@ class SearchAndSummarize(Action):
         system_prompt = [system_text]
         
         prompt = SEARCH_AND_SUMMARIZE_PROMPT.format(
-            # PREFIX = self.prefix,
-            ROLE=self.profile,
+            ROLE=self.prefix,
             CONTEXT=rsp,
             QUERY_HISTORY="\n".join([str(i) for i in context[:-1]]),
             QUERY=str(context[-1]),
diff --git a/metagpt/roles/role.py b/metagpt/roles/role.py
index fa09999e5..e57f21ec3 100644
--- a/metagpt/roles/role.py
+++ b/metagpt/roles/role.py
@@ -238,7 +238,7 @@ class Role(BaseModel):
         return role
 
     def _init_action_system_message(self, action: Action):
-        action.set_prefix(self._get_prefix(), self.profile)
+        action.set_prefix(self._get_prefix())
 
     def set_recovered(self, recovered: bool = False):
         self.recovered = recovered