USDC & RPC Reference (free)
Free read-only data: verified USDC addresses and EIP-712 domains, measured RPC eth_getLogs limits.
Install
Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).
claude mcp add --transport http usdc-rpc-reference-free 'https://x402-preflight-grokbot.netlify.app/mcp'
{
"mcpServers": {
"usdc-rpc-reference-free": {
"type": "http",
"url": "https://x402-preflight-grokbot.netlify.app/mcp"
}
}
}
Frequently asked questions
What is USDC & RPC Reference (free)?
Free read-only data: verified USDC addresses and EIP-712 domains, measured RPC eth_getLogs limits.
How do I install USDC & RPC Reference (free)?
It runs as a remote server. In Claude Code: claude mcp add --transport http usdc-rpc-reference-free 'https://x402-preflight-grokbot.netlify.app/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.
Does USDC & RPC Reference (free) need an API key?
Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.
Who maintains USDC & RPC Reference (free)?
It is published by app.netlify.x402-preflight-grokbot. AI.tn lists it but does not maintain or endorse it.
From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.