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Hacé Cuentas — Free Calculators

by grblasquiz · remote · no sign-in to list tools · v1.0.0 · published by GitHub user grblasquiz

Free calculators as MCP tools: finance, taxes, health, units, dates. Search, fetch & compute.

Changes · 1
CompareRegistry entry

3 tools: 1 change things and 2 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http hacecuentas https://hacecuentas.com/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

3 tools

Changes things 1Claude Code: ask
  • computeCalcula el resultado de una calculadora en vivo.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Calcula el resultado de una calculadora en vivo. Pasá el slug y un objeto inputs con los campos (ver get_calculator). Opcional lang (es|en|pt). Devuelve el resultado calculado en JSON.
Only reads 2Claude Code: allow
  • get_calculatorDevuelve la ficha de una calculadora por slug: qué inputs toma (id, tipo, requerido, valores válidos) y una URL de ejemplo.No findings

    Why it is in this group

    • The name "get_calculator" says "get": a word for reading.
    Description, as the server wrote it
    Devuelve la ficha de una calculadora por slug: qué inputs toma (id, tipo, requerido, valores válidos) y una URL de ejemplo. Usalo antes de compute para saber qué parámetros pasar.
  • search_calculatorsBusca calculadoras de Hacé Cuentas por palabra clave (ej.No findings

    Why it is in this group

    • The name "search_calculators" says "search": a word for reading.
    Description, as the server wrote it
    Busca calculadoras de Hacé Cuentas por palabra clave (ej. "imc", "préstamo", "aguinaldo"). Devolvé el slug para usar luego con get_calculator o compute. Opcional: filtrar por category y limitar resultados.

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http hacecuentas https://hacecuentas.com/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__hacecuentas__search_calculators",
      "mcp__hacecuentas__get_calculator"
    ],
    "ask": [
      "mcp__hacecuentas__compute"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as hacecuentas. Review it before you use it.