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99 lines
3.0 KiB
Python
99 lines
3.0 KiB
Python
import anyio
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import click
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import mcp_types as types
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from mcp.server import Server, ServerRequestContext
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def create_messages(context: str | None = None, topic: str | None = None) -> list[types.PromptMessage]:
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"""Create the messages for the prompt."""
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messages: list[types.PromptMessage] = []
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# Add context if provided
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if context:
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messages.append(
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types.PromptMessage(
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role="user",
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content=types.TextContent(type="text", text=f"Here is some relevant context: {context}"),
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)
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)
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# Add the main prompt
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prompt = "Please help me with "
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if topic:
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prompt += f"the following topic: {topic}"
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else:
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prompt += "whatever questions I may have."
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messages.append(types.PromptMessage(role="user", content=types.TextContent(type="text", text=prompt)))
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return messages
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async def handle_list_prompts(
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ctx: ServerRequestContext, params: types.PaginatedRequestParams | None
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) -> types.ListPromptsResult:
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return types.ListPromptsResult(
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prompts=[
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types.Prompt(
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name="simple",
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title="Simple Assistant Prompt",
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description="A simple prompt that can take optional context and topic arguments",
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arguments=[
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types.PromptArgument(
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name="context",
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description="Additional context to consider",
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required=False,
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),
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types.PromptArgument(
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name="topic",
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description="Specific topic to focus on",
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required=False,
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),
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],
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)
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]
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)
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async def handle_get_prompt(ctx: ServerRequestContext, params: types.GetPromptRequestParams) -> types.GetPromptResult:
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if params.name != "simple":
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raise ValueError(f"Unknown prompt: {params.name}")
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arguments = params.arguments or {}
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return types.GetPromptResult(
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messages=create_messages(context=arguments.get("context"), topic=arguments.get("topic")),
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description="A simple prompt with optional context and topic arguments",
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)
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@click.command()
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@click.option("--port", default=8000, help="Port to listen on for HTTP")
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@click.option(
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"--transport",
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type=click.Choice(["stdio", "streamable-http"]),
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default="stdio",
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help="Transport type",
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)
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def main(port: int, transport: str) -> int:
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app = Server(
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"mcp-simple-prompt",
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on_list_prompts=handle_list_prompts,
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on_get_prompt=handle_get_prompt,
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)
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if transport == "streamable-http":
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import uvicorn
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uvicorn.run(app.streamable_http_app(), host="127.0.0.1", port=port)
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else:
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from mcp.server.stdio import stdio_server
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async def arun():
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async with stdio_server() as streams:
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await app.run(streams[0], streams[1], app.create_initialization_options())
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anyio.run(arun)
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return 0
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