How I built a pay-per-call API using x402 on Base — no subscriptions

UPDATE: NEXUS is now live on xpay.tools!

Add to Claude Desktop or Cursor in one line:

{"mcpServers":{"nexus":{"url":"https://nexus-agent.mcp.xpay.sh/mcp"}}}

Pay per call. No subscription. Works in Claude Desktop, Cursor, VS Code, ChatGPT.

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