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# Resumen: Agentes LangChain v1

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  <code class="font-bold">createAgent</code> - Punto de entrada principal
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  <code class="font-bold">model</code> - String ("mistral:mistral-large-latest") o instancia ChatModel
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  <code class="font-bold">systemPrompt</code> - String o SystemMessage
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<v-click>
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  <code class="font-bold">tools</code> - Array de tools definidas con Zod
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</v-click>

<v-click>
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  <code class="font-bold">checkpointer</code> - MemorySaver | SqliteSaver | PostgresSaver
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</v-click>

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  <code class="font-bold">middleware</code> - Array para customización (prompts, límites, HITL)
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<v-click>
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  <code class="font-bold">stream()</code> - updates | values | messages
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