curso-langchain/slides/pages/alternatives/06.md

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APIs Nativas de los Providers

Cada provider tiene su SDK oficial para Node.js/TS

OpenAI SDK

import OpenAI from "openai";
const openai = new OpenAI();

// Function calling nativo
const response = await openai.chat.completions.create({
  model: "gpt-4.1",
  messages: [...],
  tools: [{ type: "function", function: {...} }],
});

• Assistants API (agentes con estado)
• File search, code interpreter built-in

Anthropic SDK + Agent SDK

import Anthropic from "@anthropic-ai/sdk";
const anthropic = new Anthropic();

const message = await anthropic.messages.create({
  model: "claude-sonnet-4-6",
  messages: [...],
  tools: [{ name: "...", input_schema: {...} }],
});

• Tool use muy potente
• Claude Agent SDK (@anthropic-ai/claude-agent-sdk)