diff --git a/metagpt/const.py b/metagpt/const.py
index 9e7462da6..f2f1b4837 100644
--- a/metagpt/const.py
+++ b/metagpt/const.py
@@ -14,9 +14,11 @@ def get_project_root():
     """逐级向上寻找项目根目录"""
     current_path = Path.cwd()
     while True:
-        if (current_path / '.git').exists() or \
-           (current_path / '.project_root').exists() or \
-           (current_path / '.gitignore').exists():
+        if (
+            (current_path / ".git").exists()
+            or (current_path / ".project_root").exists()
+            or (current_path / ".gitignore").exists()
+        ):
             return current_path
         parent_path = current_path.parent
         if parent_path == current_path:
@@ -25,15 +27,15 @@ def get_project_root():
 
 
 PROJECT_ROOT = get_project_root()
-DATA_PATH = PROJECT_ROOT / 'data'
-WORKSPACE_ROOT = PROJECT_ROOT / 'workspace'
-PROMPT_PATH = PROJECT_ROOT / 'metagpt/prompts'
-UT_PATH = PROJECT_ROOT / 'data/ut'
+DATA_PATH = PROJECT_ROOT / "data"
+WORKSPACE_ROOT = PROJECT_ROOT / "workspace"
+PROMPT_PATH = PROJECT_ROOT / "metagpt/prompts"
+UT_PATH = PROJECT_ROOT / "data/ut"
 SWAGGER_PATH = UT_PATH / "files/api/"
 UT_PY_PATH = UT_PATH / "files/ut/"
 API_QUESTIONS_PATH = UT_PATH / "files/question/"
 YAPI_URL = "http://yapi.deepwisdomai.com/"
-TMP = PROJECT_ROOT / 'tmp'
+TMP = PROJECT_ROOT / "tmp"
 RESEARCH_PATH = DATA_PATH / "research"
 
 MEM_TTL = 24 * 30 * 3600
@@ -43,4 +45,12 @@ DEFAULT_LANGUAGE = "English"
 DEFAULT_MAX_TOKENS = 1500
 COMMAND_TOKENS = 500
 BRAIN_MEMORY = "BRAIN_MEMORY"
-SKILL_PATH = "SKILL_PATH"
\ No newline at end of file
+SKILL_PATH = "SKILL_PATH"
+SERPER_API_KEY = "SERPER_API_KEY"
+
+# Key Definitions for MetaGPT LLM
+METAGPT_API_MODEL = "METAGPT_API_MODEL"
+METAGPT_API_KEY = "METAGPT_API_KEY"
+METAGPT_API_BASE = "METAGPT_API_BASE"
+METAGPT_API_TYPE = "METAGPT_API_TYPE"
+METAGPT_API_VERSION = "METAGPT_API_VERSION"
diff --git a/metagpt/provider/base_gpt_api.py b/metagpt/provider/base_gpt_api.py
index f1590a77c..af0cf2ec0 100644
--- a/metagpt/provider/base_gpt_api.py
+++ b/metagpt/provider/base_gpt_api.py
@@ -15,7 +15,8 @@ from metagpt.provider.base_chatbot import BaseChatbot
 
 class BaseGPTAPI(BaseChatbot):
     """GPT API abstract class, requiring all inheritors to provide a series of standard capabilities"""
-    system_prompt = 'You are a helpful assistant.'
+
+    system_prompt = "You are a helpful assistant."
 
     def _user_msg(self, msg: str) -> dict[str, str]:
         return {"role": "user", "content": msg}
@@ -46,9 +47,9 @@ class BaseGPTAPI(BaseChatbot):
             rsp = await self.acompletion_text(message, stream=True)
         except Exception as e:
             logger.exception(f"{e}")
+            logger.info(f"ask:{msg}, error:{e}")
             raise e
-        logger.debug(message)
-        # logger.debug(rsp)
+        logger.info(f"ask:{msg}, anwser:{rsp}")
         return rsp
 
     def _extract_assistant_rsp(self, context):
@@ -115,7 +116,7 @@ class BaseGPTAPI(BaseChatbot):
 
     def messages_to_prompt(self, messages: list[dict]):
         """[{"role": "user", "content": msg}] to user: <msg> etc."""
-        return '\n'.join([f"{i['role']}: {i['content']}" for i in messages])
+        return "\n".join([f"{i['role']}: {i['content']}" for i in messages])
 
     def messages_to_dict(self, messages):
         """objects to [{"role": "user", "content": msg}] etc."""
diff --git a/metagpt/provider/metagpt_llm_api.py b/metagpt/provider/metagpt_llm_api.py
new file mode 100644
index 000000000..c27e7132d
--- /dev/null
+++ b/metagpt/provider/metagpt_llm_api.py
@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+"""
+@Time    : 2023/8/30
+@Author  : mashenquan
+@File    : metagpt_llm_api.py
+@Desc    : MetaGPT LLM related APIs
+"""
+
+import openai
+
+from metagpt.config import CONFIG
+from metagpt.provider import OpenAIGPTAPI
+from metagpt.provider.openai_api import RateLimiter
+
+
+class MetaGPTLLMAPI(OpenAIGPTAPI):
+    """MetaGPT LLM api"""
+
+    def __init__(self):
+        self.__init_openai()
+        self.llm = openai
+        self.model = CONFIG.METAGPT_API_MODEL
+        self.auto_max_tokens = False
+        RateLimiter.__init__(self, rpm=self.rpm)
+
+    def __init_openai(self, *args, **kwargs):
+        openai.api_key = CONFIG.METAGPT_API_KEY
+        if CONFIG.METAGPT_API_BASE:
+            openai.api_base = CONFIG.METAGPT_API_BASE
+        if CONFIG.METAGPT_API_TYPE:
+            openai.api_type = CONFIG.METAGPT_API_TYPE
+            openai.api_version = CONFIG.METAGPT_API_VERSION
+        self.rpm = int(CONFIG.RPM) if CONFIG.RPM else 10
diff --git a/tests/metagpt/provider/test_metagpt_llm_api.py b/tests/metagpt/provider/test_metagpt_llm_api.py
new file mode 100644
index 000000000..9c8356ca6
--- /dev/null
+++ b/tests/metagpt/provider/test_metagpt_llm_api.py
@@ -0,0 +1,17 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+@Time    : 2023/8/30
+@Author  : mashenquan
+@File    : test_metagpt_llm_api.py
+"""
+from metagpt.provider.metagpt_llm_api import MetaGPTLLMAPI
+
+
+def test_metagpt():
+    llm = MetaGPTLLMAPI()
+    assert llm
+
+
+if __name__ == "__main__":
+    test_metagpt()