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Hacé Cuentas — Free Calculators MCP Server

by grblasquiz Your server? Claim it
answering

Hacé Cuentas — Free Calculators is answering right now. Last checked 3 min ago. It exposes 3 tools. Last commit 17 Sep 2026.

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

Uptime history 47 days of history
47 days agonow
100.0%
Uptime 24h
92 of 92 checks
3
Tools
read from the server
1834 ms
Response time
average over 24h
0
Stars
last commit 17 Sep 2026

What the code does

We read the source, 22 h ago · tools taken from the live server · rules 3dff92dd89df

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

          <label><span>Años de aportes <i title="Años reconocidos por ANSES">i</i></span><select id="years" aria-label="Años de aportes">{Array.from({length:31},(_,i)=>20+i).map(y=><option value={y} selected={y===30}>{y} años</option>)}</select></label>
Dumps the whole environment astro.config.mjs:184
      __INCREMENTAL_CHANGES__: JSON.stringify(process.env.INCREMENTAL_CHANGES || ''),

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.

run in your terminal
claude mcp add hacecuentas --transport http https://hacecuentas.com/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "hacecuentas": {
      "url": "https://hacecuentas.com/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.hacecuentas]
url = "https://hacecuentas.com/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "hacecuentas": {
      "url": "https://hacecuentas.com/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "hacecuentas": {
      "url": "https://hacecuentas.com/mcp"
    }
  }
}

Available tools 3

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

calculator
get_calculator
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.
calculators
search_calculators
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.
compute
compute
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.

Endpoints

URLTransportStateLatencyChecked
https://hacecuentas.com/mcp streamable-http answering 1657 ms 3 min ago

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Hacé Cuentas — Free Calculators — questions

Answers built from our own checks of this server.

What can Hacé Cuentas — Free Calculators do?
It exposes 3 tools, read directly from the server on our last check. Among them: compute, get_calculator, search_calculators. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Hacé Cuentas — Free Calculators working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 1834 ms. The bar chart above shows every period we have measured.
How do I connect Hacé Cuentas — Free Calculators?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Hacé Cuentas — Free Calculators need an API key?
No. Hacé Cuentas — Free Calculators completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.
Is Hacé Cuentas — Free Calculators open source?
We cannot say either way: written in TypeScript, 0 stars on GitHub and 234 open issues, but we could not determine the licence, and without one the code is not open source by default.