X402 Discovery Mcp vs APIbase

In-depth architectural comparison of the X402 Discovery Mcp and APIbase 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 Discovery Mcp when:

• You need dedicated capabilities in the Aggregators domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: API Key required (Freemium).
• You have access to required keys: X402_PAYMENT_HEADER, X402_WALLET_ADDRESS, X402_API_URL.
• Primary tools included: Real-time quality and trust scoring (0-100) for x402 APIs, Autonomous payment routing and execution with retries, Facilitator compatibility and placement bid support.

Explore X402 Discovery Mcp Details

Choose APIbase when:

• You need dedicated capabilities in the Aggregators domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: API Key required (BYOK (Pay Provider Direct)).
• You have access to required keys: APIBASE_API_KEY.

Feature & Specification Comparison

Specification	X402 Discovery Mcp rplryan Aggregators	APIbase whiteknightonhorse Aggregators
Summary	Runtime discovery layer for x402-payable APIs. Agents discover and route to pay-per-call x402 endpoints by capability, get quality-ranked results with trust scores (0-100), and pay per query via x402. Includes MCP server, Python SDK, and CLI (npm install -g x402scout).	Unified API hub for AI agents with 56+ tools across travel (Amadeus, Sabre), prediction markets (Polymarket), crypto, and weather. Pay-per-call via x402 micropayments in USDC.
Category & Scope

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": {
    "rplryan-x402-discovery-mcp": {
      "command": "uvx",
      "args": [
        "rplryan-x402-discovery-mcp"
      ],
      "env": {
        "X402_PAYMENT_HEADER": "YOUR_X402_PAYMENT_HEADER_HERE",
        "X402_WALLET_ADDRESS": "YOUR_X402_WALLET_ADDRESS_HERE",
        "X402_API_URL": "YOUR_X402_API_URL_HERE"
      }
    }
  }
}

{
  "mcpServers": {
    "whiteknightonhorse-apibase": {
      "command": "npx",
      "args": [
        "-y",
        "agentcash"
      ],
      "env": {
        "APIBASE_API_KEY": "YOUR_APIBASE_API_KEY_HERE"
      }
    }
  }
}

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