USDC & RPC Reference (free)

Reliability

Latest check failed 3 h ago: initialize returned HTTP 404

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "usdc-rpc-reference-free": {
      "type": "http",
      "url": "https://x402-preflight-grokbot.netlify.app/mcp"
    }
  }
}

3 tools

• usdc_token_info

  Native USDC contract address, decimals, EIP-712 domain (name, version, domainSeparator) and EIP-3009 support for a chain, verified onchain. Pass chain as a chain id (8453) or slug (base). Omit chain to list all chains.

• rpc_getlogs_limits

  Measured eth_getLogs block-range limits, latency, archive support and error messages for free public RPC endpoints. Pass chain (id or slug) to filter.

• paid_x402_tools

  Lists the pay-per-call x402 HTTP endpoints on this site (USDC on Base): Safe Read (webpage to clean text with a prompt injection scan), x402 Preflight (check an x402 endpoint before paying), and the x402 Seller Field Guide.

Security scan

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