Base USDC Payment Verifier (x402)

Overview

Base USDC Payment Verifier (x402) is a Model Context Protocol server that confirms whether a Base blockchain transaction is a valid native-USDC transfer to a specified recipient. Any MCP-compatible AI assistant can call its verification tools directly, letting the model decide when to use them during conversations or agent runs. The service operates on a pay-per-call model via x402, charging 0.01 USDC per verification request.

The server runs as a hosted remote endpoint at https://x402-usdc-verify.onrender.com/mcp, requiring no local installation. Simply point your MCP client to that address to connect. The latest release is v1.2.0. No authentication credentials are needed to get started. Full documentation is available at https://x402-usdc-verify.onrender.com/docs.md.

Base USDC Payment Verifier (x402) is categorized under Finance and integrates with all MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, and Zed. Maintainers can claim this listing to verify ownership, earn a Verified badge, and keep information current.

Installation

Settings → Connectors → Add custom connector
Name: Base USDC Payment Verifier (x402)
URL:  https://x402-usdc-verify.onrender.com/mcp