Contaí — Calculadoras Fiscais Brasileiras
Run Brazilian payroll, CLT severance, INSS, IRRF, and PJ tax math from your coding agent without leaving the editor.
Overview
Contaí (io.github.lfhillesheim/contai-mcp-server) is an Operate-phase MCP server that exposes 32 Brazilian fiscal and payroll calculators for agents via stdio.
What is this MCP server?
- 32 MCP tools covering CLT, INSS, IRRF, PJ, personal finance, and health-related calculators
- Brazil-focused labels and pt-BR registry metadata for payroll, rescisão, and salário líquido workflows
- stdio npm package @contai-evoluke/mcp-server v0.5.1
- Optional CONTAI_TELEMETRY (default OFF) with LGPD-oriented anonymous metrics only
- MIT license with finance and productivity registry categories
- 32 MCP calculator tools
- Server version 0.5.1
What problem does it solve?
You run payroll or PJ scenarios in Brazil and waste time cross-checking CLT, INSS, and IRRF rules outside your agent session.
Who is it for?
Solo builders and indie devs in Brazil (or serving BR clients) who want agent-driven salary, severance, and tax estimates during operations.
Skip if: Teams outside Brazil, anyone needing certified legal or accounting sign-off, or builders with zero Portuguese context for labor law terms.
What do I get? / Deliverables
After you register the npm MCP server, your agent can call dedicated calculator tools and return structured BR tax and labor results in-thread.
- Agent-callable results from 32 BR fiscal and labor calculator tools
- Repeatable payroll and tax what-if runs inside the IDE
- Optional anonymous telemetry configuration without sharing inputs
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Journey fit
Fiscal and labor calculations matter once you are operating a Brazilian business or freelancing under CLT/PJ rules, not during initial product discovery. Iterate fits recurring payroll quotes, contract scenarios, and what-if tax checks as revenue and headcount change.
How it compares
Regional fiscal calculator MCP, not a general spreadsheet plugin or US payroll SaaS integration.
Common Questions / FAQ
Who is Contaí MCP for?
It is for developers and operators in Brazil who want their AI coding agent to run CLT, INSS, IRRF, and PJ calculations through MCP tools instead of manual tables.
When should I use Contaí MCP?
Use it when you are iterating on hiring costs, severance quotes, net pay, or PJ tax scenarios while running or scaling a Brazilian business.
How do I add Contaí to my agent?
Install @contai-evoluke/mcp-server from npm, add a stdio MCP entry in Claude Code or Cursor, and leave CONTAI_TELEMETRY off unless you explicitly opt in.