Contaí — Calculadoras Fiscais Brasileiras

io.github.lfhillesheimPublished by GitHub account lfhillesheimv0.5.1Updated Oct 27, 2026

32 ferramentas MCP de cálculo fiscal/trabalhista BR (CLT, INSS, IRRF, PJ, finanças, saúde).

VerifiedSTDIODesktop onlyFinance

Server details

Identifier: io.github.lfhillesheim/contai-mcp-server
Transport: STDIO
Runtime: Desktop only
Trust: Verified
Published: Sep 16, 2026

Security note

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Overview

AI-generated overview

Local MCP server with 32 Brazilian tax and labor calculators (CLT, INSS, IRRF, PJ, finance, health) that an assistant can run for payroll and fiscal figures.

What you can do: Run Brazilian labor and payroll calculations such as CLT, INSS and IRRF
Compute PJ (company) and personal finance figures
Handle health-related fiscal calculations
Return computed results from 32 calculator tools, with per-call timeouts to avoid hangs
When to use it: Useful when an assistant needs to work out Brazilian payroll, severance, tax withholding or PJ-versus-CLT style figures and should compute them with a dedicated calculator rather than estimating.
Requirements: Runs as a local process over stdio, installed from the npm package @contai-evoluke/mcp-server, so Node.js is needed. No authentication is declared. Optional environment variables: CONTAI_TELEMETRY (off by default), CONTAI_TELEMETRY_URL and CONTAI_TIMEOUT_MS (default 5000 ms).

Before you install

Telemetry is opt-in and off by default; if enabled, it sends tool name, duration, success flag, error code, version, timestamp and an install ID to the default endpoint, never inputs or outputs, and CONTAI_TELEMETRY_URL can redirect it. Results are calculations only, so verify them before relying on them for payroll or tax decisions.

Installation

In SourceWeft

Open Contaí — Calculadoras Fiscais Brasileiras in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

This repository has no README.

Tools

SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

v0.5.1LatestSep 16, 2026

Score

25% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

Reached in the last 30 days25 pts
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Auth declared10 pts
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Tools listed15 pts
Answer tools/list without a credential, or ship a package that starts in a sandbox without one.
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.
License10 pts
Declare a license in the repository or the registry entry.