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# Integración MCP (Model Context Protocol)
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### MCP en LangChain.js
Protocolo abierto que estandariza cómo las aplicaciones proporcionan tools y contexto a LLMs.
```typescript
import { ChatOpenAI, tools } from "@langchain/openai";
const model = new ChatOpenAI({ model: "gpt-4.1" });
const response = await model.invoke("Roll 2d4+1", {
tools: [
tools.mcp({
serverLabel: "dmcp",
serverDescription: "A D&D MCP server for dice rolling",
serverUrl: "https://dmcp-server.deno.dev/sse",
requireApproval: "never",
}),
],
});
```
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