Closed
Description
# /// script
# dependencies = [
# "mcp"
# ]
# ///
from mcp.server import Server, NotificationOptions
from mcp.server.models import InitializationOptions
import mcp.server.stdio
import mcp.types as types
# Create a server instance
server = Server("example-server")
# Add prompt capabilities
@server.list_prompts()
async def handle_list_prompts() -> list[types.Prompt]:
return [
types.Prompt(
name="example-prompt",
description="An example prompt template",
arguments=[
types.PromptArgument(
name="arg1",
description="Example argument",
required=True
)
]
)
]
@server.get_prompt()
async def handle_get_prompt(
name: str,
arguments: dict[str, str] | None
) -> types.GetPromptResult:
if name != "example-prompt":
raise ValueError(f"Unknown prompt: {name}")
return types.GetPromptResult(
description="Example prompt",
messages=[
types.PromptMessage(
role="user",
content=types.TextContent(
type="text",
text="Example prompt text"
)
)
]
)
async def run():
# Run the server as STDIO
async with mcp.server.stdio.stdio_server() as (read_stream, write_stream):
await server.run(
read_stream,
write_stream,
InitializationOptions(
server_name="example",
server_version="0.1.0",
capabilities=server.get_capabilities(
notification_options=NotificationOptions(),
experimental_capabilities={},
)
)
)
if __name__ == "__main__":
import asyncio
asyncio.run(run())Error :
--------------------------------------------------------------------------
RuntimeError Traceback (most recent call last)
Cell In[1], line 70
68 if __name__ == "__main__":
69 import asyncio
---> 70 asyncio.run(run())
File [/usr/lib/python3.12/asyncio/runners.py:190](http://localhost:8888/usr/lib/python3.12/asyncio/runners.py#line=189), in run(main, debug, loop_factory)
161 """Execute the coroutine and return the result.
162
163 This function runs the passed coroutine, taking care of
(...)
186 asyncio.run(main())
187 """
188 if events._get_running_loop() is not None:
189 # fail fast with short traceback
--> 190 raise RuntimeError(
191 "asyncio.run() cannot be called from a running event loop")
193 with Runner(debug=debug, loop_factory=loop_factory) as runner:
194 return runner.run(main)
RuntimeError: asyncio.run() cannot be called from a running event loop
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