diff --git a/metagpt/actions/design_api.py b/metagpt/actions/design_api.py
index e23fcdb2e..055365421 100644
--- a/metagpt/actions/design_api.py
+++ b/metagpt/actions/design_api.py
@@ -51,7 +51,7 @@ class WriteDesign(Action):
         "clearly and in detail."
     )
 
-    async def run(self, with_messages: Message, schema: str = CONFIG.prompt_format):
+    async def run(self, with_messages: Message, schema: str = CONFIG.prompt_schema):
         # Use `git diff` to identify which PRD documents have been modified in the `docs/prds` directory.
         prds_file_repo = CONFIG.git_repo.new_file_repository(PRDS_FILE_REPO)
         changed_prds = prds_file_repo.changed_files
@@ -81,11 +81,11 @@ class WriteDesign(Action):
         # leaving room for global optimization in subsequent steps.
         return ActionOutput(content=changed_files.json(), instruct_content=changed_files)
 
-    async def _new_system_design(self, context, schema=CONFIG.prompt_format):
+    async def _new_system_design(self, context, schema=CONFIG.prompt_schema):
         node = await DESIGN_API_NODE.fill(context=context, llm=self.llm, schema=schema)
         return node
 
-    async def _merge(self, prd_doc, system_design_doc, schema=CONFIG.prompt_format):
+    async def _merge(self, prd_doc, system_design_doc, schema=CONFIG.prompt_schema):
         context = NEW_REQ_TEMPLATE.format(old_design=system_design_doc.content, context=prd_doc.content)
         node = await DESIGN_API_NODE.fill(context=context, llm=self.llm, schema=schema)
         system_design_doc.content = node.instruct_content.json(ensure_ascii=False)
diff --git a/metagpt/actions/project_management.py b/metagpt/actions/project_management.py
index 3086c4d96..095881e60 100644
--- a/metagpt/actions/project_management.py
+++ b/metagpt/actions/project_management.py
@@ -45,7 +45,7 @@ class WriteTasks(Action):
     context: Optional[str] = None
     llm: BaseGPTAPI = Field(default_factory=LLM)
 
-    async def run(self, with_messages, schema=CONFIG.prompt_format):
+    async def run(self, with_messages, schema=CONFIG.prompt_schema):
         system_design_file_repo = CONFIG.git_repo.new_file_repository(SYSTEM_DESIGN_FILE_REPO)
         changed_system_designs = system_design_file_repo.changed_files
 
@@ -92,14 +92,14 @@ class WriteTasks(Action):
         await self._save_pdf(task_doc=task_doc)
         return task_doc
 
-    async def _run_new_tasks(self, context, schema=CONFIG.prompt_format):
+    async def _run_new_tasks(self, context, schema=CONFIG.prompt_schema):
         node = await PM_NODE.fill(context, self.llm, schema)
         # prompt_template, format_example = get_template(templates, format)
         # prompt = prompt_template.format(context=context, format_example=format_example)
         # rsp = await self._aask_v1(prompt, "task", OUTPUT_MAPPING, format=format)
         return node
 
-    async def _merge(self, system_design_doc, task_doc, schema=CONFIG.prompt_format) -> Document:
+    async def _merge(self, system_design_doc, task_doc, schema=CONFIG.prompt_schema) -> Document:
         context = NEW_REQ_TEMPLATE.format(context=system_design_doc.content, old_tasks=task_doc.content)
         node = await PM_NODE.fill(context, self.llm, schema)
         task_doc.content = node.instruct_content.json(ensure_ascii=False)
diff --git a/metagpt/actions/rebuild_class_view.py b/metagpt/actions/rebuild_class_view.py
index 6da3e2989..2a6a6a6d9 100644
--- a/metagpt/actions/rebuild_class_view.py
+++ b/metagpt/actions/rebuild_class_view.py
@@ -21,7 +21,7 @@ class RebuildClassView(Action):
     def __init__(self, name="", context=None, llm=None):
         super().__init__(name=name, context=context, llm=llm)
 
-    async def run(self, with_messages=None, format=CONFIG.prompt_format):
+    async def run(self, with_messages=None, format=CONFIG.prompt_schema):
         graph_repo_pathname = CONFIG.git_repo.workdir / GRAPH_REPO_FILE_REPO / CONFIG.git_repo.workdir.name
         graph_db = await DiGraphRepository.load_from(str(graph_repo_pathname.with_suffix(".json")))
         repo_parser = RepoParser(base_directory=self.context)
diff --git a/metagpt/actions/write_prd.py b/metagpt/actions/write_prd.py
index 071eacd29..47e02b699 100644
--- a/metagpt/actions/write_prd.py
+++ b/metagpt/actions/write_prd.py
@@ -69,7 +69,7 @@ class WritePRD(Action):
     content: Optional[str] = None
     llm: BaseGPTAPI = Field(default_factory=LLM)
 
-    async def run(self, with_messages, schema=CONFIG.prompt_format, *args, **kwargs) -> ActionOutput | Message:
+    async def run(self, with_messages, schema=CONFIG.prompt_schema, *args, **kwargs) -> ActionOutput | Message:
         # Determine which requirement documents need to be rewritten: Use LLM to assess whether new requirements are
         # related to the PRD. If they are related, rewrite the PRD.
         docs_file_repo = CONFIG.git_repo.new_file_repository(relative_path=DOCS_FILE_REPO)
@@ -113,7 +113,7 @@ class WritePRD(Action):
         # optimization in subsequent steps.
         return ActionOutput(content=change_files.json(), instruct_content=change_files)
 
-    async def _run_new_requirement(self, requirements, schema=CONFIG.prompt_format) -> ActionOutput:
+    async def _run_new_requirement(self, requirements, schema=CONFIG.prompt_schema) -> ActionOutput:
         # sas = SearchAndSummarize()
         # # rsp = await sas.run(context=requirements, system_text=SEARCH_AND_SUMMARIZE_SYSTEM_EN_US)
         # rsp = ""
@@ -132,7 +132,7 @@ class WritePRD(Action):
         node = await WP_IS_RELATIVE_NODE.fill(context, self.llm)
         return node.get("is_relative") == "YES"
 
-    async def _merge(self, new_requirement_doc, prd_doc, schema=CONFIG.prompt_format) -> Document:
+    async def _merge(self, new_requirement_doc, prd_doc, schema=CONFIG.prompt_schema) -> Document:
         if not CONFIG.project_name:
             CONFIG.project_name = Path(CONFIG.project_path).name
         prompt = NEW_REQ_TEMPLATE.format(requirements=new_requirement_doc.content, old_prd=prd_doc.content)
diff --git a/metagpt/config.py b/metagpt/config.py
index 45bdb9bdc..9a452cab0 100644
--- a/metagpt/config.py
+++ b/metagpt/config.py
@@ -185,7 +185,7 @@ class Config(metaclass=Singleton):
             self._get("WORKSPACE_UID") or f"{datetime.datetime.now().strftime('%Y%m%d%H%M%S')}-{uuid4().hex[-8:]}"
         )
         self.repair_llm_output = self._get("REPAIR_LLM_OUTPUT", False)
-        self.prompt_format = self._get("PROMPT_FORMAT", "json")
+        self.prompt_schema = self._get("PROMPT_FORMAT", "json")
         self.workspace_path = Path(self._get("WORKSPACE_PATH", DEFAULT_WORKSPACE_ROOT))
         val = self._get("WORKSPACE_PATH_WITH_UID")
         if val and val.lower() == "true":  # for agent
diff --git a/metagpt/utils/get_template.py b/metagpt/utils/get_template.py
index b6dea00ae..7e05e5d5e 100644
--- a/metagpt/utils/get_template.py
+++ b/metagpt/utils/get_template.py
@@ -8,7 +8,7 @@
 from metagpt.config import CONFIG
 
 
-def get_template(templates, schema=CONFIG.prompt_format):
+def get_template(templates, schema=CONFIG.prompt_schema):
     selected_templates = templates.get(schema)
     if selected_templates is None:
         raise ValueError(f"Can't find {schema} in passed in templates")