Hacé Cuentas — Free Calculators vs Tollbooth X402

In-depth architectural comparison of the Hacé Cuentas — Free Calculators and Tollbooth X402 MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose Hacé Cuentas — Free Calculators when:

• You need dedicated capabilities in the Finance & Fintech domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Hacé Cuentas — Free Calculators Details

Choose Tollbooth X402 when:

• You need dedicated capabilities in the Finance & Fintech domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: tollbooth_catalog, tollbooth_preview, tollbooth_verify_hash.

Explore Tollbooth X402 Details

Feature & Specification Comparison

Specification	Hacé Cuentas — Free Calculators Finance & Fintech	Tollbooth X402 Finance & Fintech
Summary	Free calculators as MCP tools: finance, taxes, health, units, dates. Search, fetch & compute.	Discover, preview & self-verify 56 x402 pay-per-call finance/tax calculators for AI agents.
Category & Scope	Finance & Fintech	Finance & Fintech

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "hac-cuentas-free-calculators": {
      "command": "npx",
      "args": [
        "-y",
        "hac-cuentas-free-calculators"
      ]
    }
  }
}

{
  "mcpServers": {
    "tollbooth-x402": {
      "command": "npx",
      "args": [
        "-y",
        "tollbooth-x402"
      ]
    }
  }
}

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