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Delete mcp_agent.py
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mcp_agent.py
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# mcp_agent.py
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import asyncio
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from typing import List, Dict, Optional, Generator, AsyncGenerator
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from fastmcp import Client
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from fastmcp.client.transports import SSETransport
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from llama_index.core.workflow import Context
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from llama_index.tools.mcp import McpToolSpec
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from llama_index.core.agent.workflow import FunctionAgent, ToolCall, ToolCallResult
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from mcp.client.sse import sse_client as original_sse_client
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from mcp.client.session import ClientSession
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from datetime import timedelta
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from contextlib import asynccontextmanager
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class CustomMCPClient:
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def __init__(self, url: str, headers: dict = None, timeout: int = 30):
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self.url = url
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self.headers = headers or {}
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self.timeout = timeout
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async def call_tool(self, tool_name: str, arguments: dict):
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async with self._create_session() as session:
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return await session.call_tool(tool_name, arguments)
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async def list_tools(self):
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async with self._create_session() as session:
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return await session.list_tools()
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@asynccontextmanager
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async def _create_session(self):
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async with original_sse_client(
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url=self.url,
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headers=self.headers,
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timeout=self.timeout
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) as streams:
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async with ClientSession(
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*streams,
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read_timeout_seconds=timedelta(seconds=self.timeout)
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) as session:
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await session.initialize()
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yield session
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class MCPAgent:
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def __init__(self, sse_url: str, hf_token: str, llm):
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self.sse_url = sse_url
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self.hf_token = hf_token
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self.llm = llm
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self.agent = None
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self.agent_context = None
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self.SYSTEM_PROMPT = """
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Eres un **Asistente de IA especializado en llamadas a herramientas (Tool Calling)**.
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Tu funci贸n es responder EXCLUSIVAMENTE usando las herramientas asignadas, sin usar conocimientos previos.
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### 馃敼 Herramientas Disponibles:
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1. **query_space**: Consulta informaci贸n t茅cnica en espacios especializados (PRINCIPAL/PREFERENTE)
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2. **list_spaces_names**: Lista espacios disponibles. (Contiene los 'space_name', 煤til para usar query_space)
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3. **search_tavily**: Recuperador de informaci贸n y contenido web que usa el motor de b煤squeda tavily
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### 鈿狅笍 Reglas Estrictas:
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1. **OBLIGATORIO**: Usar `query_space` para cualquier consulta t茅cnica.
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2. **PROHIBIDO**: Inventar respuestas o usar conocimientos no verificados.
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3. **PRIORIDAD**: Siempre validar informaci贸n con herramientas antes de responder.
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4. **PRECISI脫N**: Si la herramienta falla, NO intentes adivinar la respuesta.
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"""
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async def initialize(self):
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"""Inicializa el cliente MCP y el agente"""
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mcp_client = CustomMCPClient(
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self.sse_url,
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headers={"Authorization": f"Bearer {self.hf_token}"}
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)
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mcp_tool = McpToolSpec(client=mcp_client)
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tools = await mcp_tool.to_tool_list_async()
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self.agent = FunctionAgent(
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name="MCP_Agent",
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description="Agente que utiliza herramientas MCP para responder.",
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tools=tools,
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llm=self.llm,
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system_prompt=self.SYSTEM_PROMPT,
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)
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self.agent_context = Context(self.agent)
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return await mcp_client.list_tools()
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async def process_message(self, message: str) -> str:
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"""Procesa un mensaje del usuario y devuelve la respuesta del agente"""
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if not self.agent:
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await self.initialize()
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handler = self.agent.run(message, ctx=self.agent_context)
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return str(await handler)
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async def stream_response(self, message: str) -> AsyncGenerator[Dict, None]:
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"""Genera la respuesta del agente en formato de streaming"""
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if not self.agent:
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await self.initialize()
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handler = self.agent.run(message, ctx=self.agent_context)
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async for event in handler.stream_events():
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if isinstance(event, ToolCall):
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yield {
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"type": "tool_call",
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"tool_name": event.tool_name,
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"arguments": event.tool_kwargs
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}
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elif isinstance(event, ToolCallResult):
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yield {
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"type": "tool_result",
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"tool_name": event.tool_name,
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"result": event.tool_output
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}
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yield {
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"type": "final_response",
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"content": str(await handler)
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}
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