Preflight402 vs Is Real Biz

In-depth architectural comparison of the Preflight402 and Is Real Biz 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 Preflight402 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 Preflight402 Details

I

Choose Is Real Biz 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 Is Real Biz Details

Feature & Specification Comparison

Specification	Preflight402 Finance & Fintech	I Is Real Biz Finance & Fintech
Summary	Trust verdict for an x402 payment endpoint: health, 402 handshake, price, proceed/caution/avoid.	Verify business legitimacy by domain or name in <2s. Trust score, verdict, evidence. x402-payable.
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": {
    "preflight402": {
      "command": "uvx",
      "args": [
        "--from"
      ]
    }
  }
}

{
  "mcpServers": {
    "is-real-biz": {
      "command": "npx",
      "args": [
        "-y",
        "wrangler"
      ]
    }
  }
}

Related MCP Server Comparisons