⚡ Subcent402 (subcent402.com)

The Universal M2M Micro-Payment Protocol & Model Context Protocol (MCP) Paywall Standard
Enables autonomous AI agents to pay for tools, APIs, and data feeds in sub-cent fractions ($0.0001 – $0.05) via HTTP 402, L402 Macaroons, and Base USDC.

🧭 The Problem

Traditional payment processors impose a fixed $0.30 + 2.9% fee, making $0.002 sub-cent API calls mathematically impossible. Furthermore, autonomous AI agents cannot fill in credit card forms or solve CAPTCHAs.

Subcent402 enables 3-line tool paywalls and cryptographic machine settlement in <0.2ms.

🚀 Quickstart: Monetize an MCP Tool in 3 Lines

import { withSubcent402 } from "@quitegoodproject/subcent402";

export const extractTool = withSubcent402(
  {
    priceUsd: 0.001,
    toolName: "tokenmarkdown_extract",
    recipientWallet: "0xYourWalletAddress"
  },
  async (params: { url: string }) => {
    return await fetchCleanMarkdown(params.url);
  }
);

🏛️ developer suite & Governance

Maintained by The Quite Good Project.