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mcp/harbor
Verified official

Base USDC Payment Verifier (x402) MCP

v1.2.0

com.onrender.x402-usdc-verify/base-usdc-verifier

Verify a Base tx is a confirmed native-USDC transfer to a recipient. Paid via x402, 0.01 USDC/call.

transport:streamable-http tools:2
Website

Target client

run in your project directory 

claude mcp add --transport http base-usdc-verifier https://x402-usdc-verify.onrender.com/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

get_pricing Read-only

get pricing

verify_usdc_payment

verify usdc payment

All 2 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.