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Mexican Payroll & Tax Calculator for LangChain

dev.tinyapis/mx-fiscal

Deterministic Mexican payroll & tax math: finiquito, ISR, aguinaldo, IMSS (2026 tables).

client:LangChain transport:streamable-http tools:4

Install Mexican Payroll & Tax Calculator in LangChain

pip install langchain-mcp-adapters

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "mx-fiscal": {
            "transport": "streamable_http",
            "url": "https://fiscal.tinyapis.dev/mcp",
        }
})

tools = await client.get_tools()

get_tools() returns the server's tools as LangChain tools, ready for an agent. LangChain docs

What LangChain can do once it is connected

Mexican Payroll & Tax Calculator in other clients