Mexican Payroll & Tax Calculator for Claude.ai

dev.tinyapis/mx-fiscal

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

client:Claude.ai transport:streamable-http tools:4

Install Mexican Payroll & Tax Calculator in Claude.ai

Settings → Connectors → Add custom connector

https://fiscal.tinyapis.dev/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

calc_finiquito
calc_isr
calc_aguinaldo
calc_imss

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Mexican Payroll & Tax Calculator MCP server