diff --git a/llm_hello_world.py b/llm_hello_world.py
new file mode 100644
index 000000000..6b42ef5ef
--- /dev/null
+++ b/llm_hello_world.py
@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+@Time    : 2023/5/6 14:13
+@Author  : alexanderwu
+@File    : llm_hello_world.py
+"""
+import asyncio
+
+from metagpt.logs import logger
+from metagpt.llm import LLM
+from metagpt.llm import Claude
+
+async def main():
+    llm = LLM()
+    claude = Claude()
+    logger.info(await claude.aask('你好，请进行自我介绍'))
+    logger.info(await llm.aask('hello world'))
+    logger.info(await llm.aask_batch(['hi', 'write python hello world.']))
+
+    hello_msg = [{'role': 'user', 'content': 'count from 1 to 10. split by newline.'}]
+    logger.info(await llm.acompletion(hello_msg))
+    logger.info(await llm.acompletion_batch([hello_msg]))
+    logger.info(await llm.acompletion_batch_text([hello_msg]))
+
+    logger.info(await llm.acompletion_text(hello_msg))
+    await llm.acompletion_text(hello_msg, stream=True)
+
+
+if __name__ == '__main__':
+    asyncio.run(main())
diff --git a/metagpt/provider/anthropic_api.py b/metagpt/provider/anthropic_api.py
index ef1c21188..fae4e53eb 100644
--- a/metagpt/provider/anthropic_api.py
+++ b/metagpt/provider/anthropic_api.py
@@ -23,7 +23,7 @@ class Claude2:
         return res.completion
     
     async def aask(self, prompt):
-            client = Anthropic(api_key="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")
+            client = Anthropic(api_key=claude_api_key)
 
             res = client.completions.create(
                 model="claude-2",