langchain-lexmex
Tool de LangChain para consultar LEX-MEX — asesor jurídico con IA sobre las 316 leyes federales mexicanas vigentes, sincronizadas con diputados.gob.mx. Respuestas citadas con ley y artículo exacto, sin alucinaciones.
Instalación
pip install langchain-lexmex
Credenciales
Necesitas una API key de LEX-MEX. Se obtiene registrándote como
humano en lex-mex.xyz (Google OAuth) y
generándola en POST /api/v1/keys — hay plan VIP (ilimitado) y
pay-as-you-go por créditos.
import os
os.environ["LEXMEX_API_KEY"] = "lmx_live_..."
Uso
from langchain_lexmex import LexMexTool
tool = LexMexTool() # toma LEXMEX_API_KEY del entorno
resultado = tool.invoke(
"¿Cuáles son las causales de despido justificado según la LFT?"
)
print(resultado)
Dentro de un agente
from langchain.agents import create_agent
from langchain_lexmex import LexMexTool
agent = create_agent(
model="claude-sonnet-4-6",
tools=[LexMexTool()],
)
agent.invoke({
"messages": [{"role": "user", "content": "¿Qué dice el artículo 47 de la LFT?"}]
})
Async
Instala el extra async (pip install langchain-lexmex[async]) y
usa await tool.ainvoke(...).
Licencia
MIT
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