A-Pay Protocol

⚡ A-Pay Protocol (AgentPay)

The Universal Micropayment & Economic Layer for Autonomous AI Agents

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🌐 Live Production Network & On-Chain Addresses

• Live Web App & Console: https://apay-network.vercel.app
• Base Mainnet (Chain ID 8453):
  • $APAY Token (ERC-20): 0x8dd4ff9035c7d4e0bef30aa64fc30d128a4066c3 (100M Cap, Base L2)
  • Aerodrome Live Pool: vAMM-WETH/APAY (0x6933...7777)
  • DexScreener Chart: Live APAY/WETH Chart
• Base Sepolia L2 (Chain ID 84532):
  • APayRouter (V1 Gateway): 0x71434344beEF9C44fF3BC95572bEB7bFB8847ec6 (1.0% Protocol Fee)
  • APayRouterV2 (Enterprise Router): 0xD08c8A337E5339d1c083E06d74A9265956ceEA16 (Cumulative Channels & Merkle Claims)
  • EscrowVault (Session Keys): 0x3E35a9E802627a3D9A86D6554e72b1C446E34aAF (Sub-Agent Delegated Spending)
  • StakingVault (Anti-Spam Collateral): 0xD2f3F4D97f4a3fdC9d4eEDfB9747BF9D80CF6225 (Anti-Spam Staking & Slashing Engine)

🎯 Vision & Identity

A-Pay is an ultra-lightweight, zero-latency, open economic rail designed for the machine-to-machine (M2M) economy. Just as UPI revolutionized human digital payments in India, A-Pay enables autonomous AI software agents to discover, consume, and pay for data, compute, APIs, and micro-services on the fly—without credit cards, human KYC, or seed phrase friction.

🚀 1-Command Experience

1. Website / API Owners (The Sellers)

Scaffold a fullstack monetized AI Agent app (Next.js, FastAPI, or Express) in 60 seconds:

npx create-apay-app my-paid-agent

Or protect ANY existing website or API with an instant HTTP 402 crypto paywall proxy—zero code modifications required:

apay protect --target http://localhost:8000 --price 0.001 --wallet 0xYourWalletAddress

• Incoming requests from AI bots will automatically receive an HTTP 402 Payment Required challenge.
• Once the AI agent's cryptographic micropayment is verified (<15ms), the request is forwarded to your server and data is unlocked!

2. AI Agent Developers (The Buyers)

Give your AI agent an in-memory wallet and strict spending guardrails with 2 lines of code:

from apay import APaySession, AgentWallet

# Generate or load wallet with daily safety limit
wallet = AgentWallet(private_key="0x...", max_per_call_usdc=0.01, daily_budget_usdc=5.0)
session = APaySession(wallet)

# Automatically handles HTTP 402 challenges & settles on the fly
response = session.get("https://protected-api.com/market-data")
print(response.json())

3. Claude Desktop & Cursor (Model Context Protocol / MCP)

Equip Claude Desktop, Cursor, Antigravity, or Cline with an autonomous A-Pay micro-wallet in 1 click via Smithery.ai:

npx -y @smithery/cli install apay --client claude

Or add directly to claude_desktop_config.json or .cursor/mcp.json (zero-setup via uvx):

{
  "mcpServers": {
    "apay": {
      "command": "uvx",
      "args": ["apay", "mcp"],
      "env": {
        "APAY_NETWORK": "base-mainnet",
        "APAY_CURRENCY": "DUAL",
        "APAY_MAX_PER_CALL": "0.05",
        "APAY_DAILY_BUDGET": "2.0"
      }
    }
  }
}

Now your assistant can autonomously inspect balances, probe paywalls, and settle HTTP 402 micropayments on Base L2!

📦 Directory Structure

apay/
├── src/
│   └── apay/
│       ├── __init__.py      # Package exports
│       ├── cli.py           # ⚡ 1-Command CLI (`apay protect`, `apay wallet new`, `apay pay`)
│       ├── client.py        # 🤖 Auto-settling HTTP client (sync & async)
│       ├── wallet.py        # 🔐 In-memory wallet + local spending limits
│       ├── proxy.py         # 🛡️ Ultra-light reverse proxy paywall (Starlette + EIP-712)
│       ├── relayer.py       # 📊 Settlement journal & batch relayer
│       └── integrations/    # 🔗 LangChain & CrewAI agent wrappers
├── contracts/               # Base Sepolia Smart Contracts (APAYToken & APayRouter)
├── tests/                   # Automated integration & security test suite
├── spec/                    # RFC wire format & security model specifications
└── pyproject.toml           # Hatchling packaging configuration

🛠️ Installation & Quickstart

# 1. Install A-Pay via pip
pip install apay

# 2. Generate a new Agent Wallet with spending limits
apay wallet new

# 3. Protect any website or API with an instant HTTP 402 Paywall
apay protect --target http://localhost:8000 --price 0.001 --wallet 0xYourPayoutWalletAddress

A-Pay is an open-source decentralized economic protocol for autonomous machine agents. Built on Base L2.