X402 API vs FiatDock

In-depth architectural comparison of the X402 API and FiatDock 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 X402 API 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 X402 API Details

Choose FiatDock 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 FiatDock Details

Feature & Specification Comparison

Specification	X402 API Finance & Fintech	FiatDock Finance & Fintech
Summary	AI API for marketing, content and outreach. 22 endpoints. Pay with USDC on Base via x402.	MCP marketplace: agents pay per call in USDC via x402. Plus Base chain data and a USDC<->bank ramp.
Category & Scope	Finance & Fintech	Finance & Fintech
Quality signal

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": {
    "x402-api-2": {
      "command": "uvx",
      "args": [
        "x402"
      ]
    }
  }
}

{
  "mcpServers": {
    "fiatdock": {
      "command": "npx",
      "args": [
        "-y",
        "fiatdock-mcp"
      ]
    }
  }
}

Related MCP Server Comparisons