Koskamo

Hacé Cuentas MCP

A free, open-source MCP server that exposes over 600 online calculators for finance, taxes, health, and daily life. It allows AI agents to search for calculators, retrieve their specifications, and compute results via JSON API without requiring authentication or API keys.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

Hacé Cuentas MCP logo, by Hacé CuentasCommunity listingStreamable HTTPNo sign-inEndpoint checked 2026-11-07Published by Hacé Cuentas
MCP endpoint (Streamable HTTP)
https://hacecuentas.com/mcp
Vendor documentation

What its tools do

3 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Not annotated (3)

3 of 3 have a description · 0 of 3 declare behavior hints · 3 of 3 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Search for specific calculators by slug or category
  • Retrieve calculator input specifications and examples
  • Compute results for finance, tax, or health calculations

Source and maintenance

Community listingRegistry 1.0.0
mcp-registry: io.github.grblasquiz/hacecuentas@1.0.0Source repositoryProject website
Maintenance checked

Protocol and capabilities

Server
hacecuentas 1.0.0
MCP protocol negotiated in check
2025-06-18
Tools
3 advertised
Resources
Not advertised
Resource templates
Not advertised
Prompts
Not advertised
Server-advertised capabilities
{
  "tools": {
    "listChanged": false
  }
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

Calculadoras prácticas en español (finanzas, impuestos, salud, deportes, viajes, cocina, hogar, etc.) para Argentina, España, México, Colombia, Chile, Brasil y EE.UU., actualizadas a 2026. Flujo: search_calculators → get_calculator (para ver inputs) → compute. Resultados orientativos/educativos; atribuir a Hacé Cuentas (https://hacecuentas.com) al citar.

Tools

3 advertised

search_calculators
Advertised by the server during the last successful anonymous check.

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.

search_calculators input schema
{
  "type": "object",
  "required": [
    "query"
  ],
  "properties": {
    "limit": {
      "type": "integer",
      "default": 10,
      "description": "máximo de resultados (default 10)"
    },
    "query": {
      "type": "string",
      "description": "palabras clave a buscar"
    },
    "category": {
      "type": "string",
      "description": "filtro opcional de categoría (finanzas, salud, deportes, impuestos, etc.)"
    }
  }
}
get_calculator
Advertised by the server during the last successful anonymous check.

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.

get_calculator input schema
{
  "type": "object",
  "required": [
    "slug"
  ],
  "properties": {
    "slug": {
      "type": "string",
      "description": "slug de la calc (ej. calculadora-imc)"
    }
  }
}
compute
Advertised by the server during the last successful anonymous check.

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.

compute input schema
{
  "type": "object",
  "required": [
    "slug",
    "inputs"
  ],
  "properties": {
    "lang": {
      "enum": [
        "es",
        "en",
        "pt"
      ],
      "type": "string",
      "description": "idioma del resultado (default es)"
    },
    "slug": {
      "type": "string",
      "description": "slug de la calc (ej. calculadora-imc)"
    },
    "inputs": {
      "type": "object",
      "description": "pares campo→valor, ej. {\"peso\":80,\"altura\":180}",
      "additionalProperties": true
    }
  }
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (1 of 1 answered).

  1. 2026-11-07: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
1921 ms
95th percentile latency
1921 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 1921 ms · metadata changed · 3 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http hace-cuentas-mcp https://hacecuentas.com/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add hace-cuentas-mcp --url https://hacecuentas.com/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable hace-cuentas-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "hace-cuentas-mcp": {
      "url": "https://hacecuentas.com/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "hace-cuentas-mcp": {
      "type": "streamableHttp",
      "url": "https://hacecuentas.com/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start hace-cuentas-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "hace-cuentas-mcp": {
      "type": "http",
      "url": "https://hacecuentas.com/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http hace-cuentas-mcp https://hacecuentas.com/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.
Claude Desktop configuration
https://hacecuentas.com/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "hace-cuentas-mcp": {
      "serverUrl": "https://hacecuentas.com/mcp"
    }
  }
}

Let your agent find its tools

Find servers like Hacé Cuentas MCP from your agent. Add Koskamo once to search the index for endpoints, access requirements, and client setup. Public discovery needs no key.

Connect Koskamo Explore workflows
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