402index vs Alien Plugg x402 API

In-depth architectural comparison of the 402index and Alien Plugg x402 API 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?

4

Choose 402index 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 402index Details

Choose Alien Plugg 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 Alien Plugg x402 API Details

Feature & Specification Comparison

Specification	4 402index Finance & Fintech	Alien Plugg x402 API Finance & Fintech
Summary	Search 15,000+ paid API endpoints across the L402, x402, and MPP protocols on 402index.io	32 paid x402 endpoints for crypto, Zora & on-chain analysis. 10 MCP tools. USDC on Base.
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": {
    "402index": {
      "command": "npx",
      "args": [
        "-y",
        "402index"
      ]
    }
  }
}

{
  "mcpServers": {
    "alien-plugg-x402-api": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-fetch",
        "https://base44.app/api/apps/6a5fdd57651262e86b24133e/functions/mcpHandshake"
      ]
    }
  }
}

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