MonsiTools Calculators

Connect Remote server

claude mcp add --transport http calculators https://monsitools.com/mcp --header "Authorization: Bearer <YOUR_API_KEY>"

{
  "mcpServers": {
    "calculators": {
      "url": "https://monsitools.com/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}

{
  "servers": {
    "calculators": {
      "type": "http",
      "url": "https://monsitools.com/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://monsitools.com/mcp

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools 3 found in our last check

• search_calculators

  Find MonsiTools calculators by keyword (for example 'runway', 'break even', 'roas', 'loan payment'). Returns each match's slug, name, category and input names. Use describe_calculator for details, then calculate to run one.

• describe_calculator

  Returns a calculator's name, category, formula, input names and page URL, given its slug.

• calculate

  Runs a MonsiTools calculator on the given inputs and returns the result. Works without a key for 10 calculations a day per IP address. A MonsiTools Premium API key, sent as 'Authorization: Bearer mt_live_...' when connecting, removes the daily limit.

Headers

Details

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