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mcp/harbor
Verified official

USDC & RPC Reference (free) MCP

v1.0.0 changelog · 1

app.netlify.x402-preflight-grokbot/usdc-rpc-reference

Free read-only data: verified USDC addresses and EIP-712 domains, measured RPC eth_getLogs limits.

transport:streamable-http tools:3
Website

Target client

run in your project directory 

claude mcp add --transport http usdc-rpc-reference https://x402-preflight-grokbot.netlify.app/mcp

setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok ChatGPT Claude.ai LangChain

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

usdc_token_info

usdc token info

rpc_getlogs_limits

rpc getlogs limits

paid_x402_tools

paid x402 tools

All 3 tools, one page each

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. Check the server's own documentation before granting access.