X402 Helper MCP Server: Install & Setup

Install X402 Helper in Claude Code

Claude Code

claude mcp add --transport http x402-helper https://x402helper.xyz/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "x402-helper": {
      "url": "https://x402helper.xyz/mcp"
    }
  }
}

API discovery and x402 paid execution via MCP. Search by natural-language, call with USDC payment

Probably not entirely. The listing mentions pay-per-call, credits or a subscription. Check the provider for current pricing.

Remote. Hosted by the provider. You connect with a URL, nothing to install.

Run: claude mcp add --transport http x402-helper https://x402helper.xyz/mcp

dev.workers.xbtbot.x402-reader/markdown-reader

Turn any public web page into clean Markdown. Pay-per-call via x402: 0.005 USDC on Base.

dlrjsdl200-byte/x402-gas-api

Compare live gas across up to 9 EVM chains and get the cheapest one. x402 pay-per-call on Base.

com.ruscrape/russia-access

Check x402 endpoints before paying: liveness, price history, farm detection. Plus RU web access.

com.crewofthecaptain/format-checker

IBAN, EU VAT, NIP, REGON, PESEL, email checks. Only $0.001 (0.1 cent) per check via x402 on Base

kadopi/x402-mcp-starter

Free self-hosted x402 USDC billing for Cloudflare MCP servers, with a Base Sepolia test endpoint.

praneeth12098/x402-factory-clients

200+ x402 paid data APIs for AI agents: prediction markets, verified weather, econ, SEC filings