A2A SHIB Payment System - OpenClaw Skill

Framework-agnostic agent-to-agent payment infrastructure on Polygon network.

Summary

This skill enables AI agents to:

• 💰 Send/receive SHIB payments on Polygon (~$0.003 gas)
• 🔒 Create trustless escrow contracts
• 💬 Negotiate prices automatically (multi-round)
• ⭐ Build reputation through ratings
• 🌐 Discover other agents via A2A protocol

9,416x cheaper than traditional escrow services (Escrow.com charges $28.25 per $100, this costs $0.003).

Features

Payment System

• Direct SHIB transfers on Polygon
• Sub-penny gas costs (~$0.003)
• Balance checking
• Transaction history

Escrow System

• Time-locked trustless payments
• Multi-party approval required
• Delivery proof submission
• Automatic release when conditions met
• Dispute resolution with arbiter
• 6-state machine: pending → funded → locked → released/refunded/disputed

Price Negotiation

• Service quote creation
• Multi-round counter-offers
• Accept/reject workflow
• Automatic escrow integration
• Service delivery tracking

Reputation System

• Star ratings (0-5) with reviews
• Dynamic trust scores (0-100)
• Trust levels: new → bronze → silver → gold → platinum
• Achievement badges
• Agent verification

Security Layer

• API key authentication (64-byte keys)
• Rate limiting (requests + payments + volume)
• Immutable audit logging (hash-chained)
• Per-agent permissions & limits

Installation

# Via ClawHub
clawhub install a2a-shib-payments

# Or manual clone
cd ~/clawd/skills
git clone https://github.com/marcus20232023/a2a-shib-payments.git
cd a2a-shib-payments
npm install

Configuration

Create .env.local:

cp .env.example .env.local
nano .env.local

Required environment variables:

• WALLET_PRIVATE_KEY - Your Polygon wallet private key
• RPC_URL - Polygon RPC endpoint (default: https://polygon-rpc.com)
• SHIB_CONTRACT_ADDRESS - SHIB token contract (default: 0x95ad61b0a150d79219dcf64e1e6cc01f0b64c4ce)

Usage

Start the Agent

node a2a-agent-full.js

Agent runs on port 8003 by default.

OpenClaw Integration

The agent exposes A2A protocol endpoints that OpenClaw can communicate with:

Agent Card: http://localhost:8003/.well-known/agent-card.json

Example commands from OpenClaw:

// Check balance
const result = await fetch('http://localhost:8003/a2a/jsonrpc', {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    jsonrpc: '2.0',
    method: 'message/send',
    params: {
      message: {
        kind: 'message',
        messageId: '1',
        role: 'user',
        parts: [{kind: 'text', text: 'balance'}]
      }
    },
    id: 1
  })
});

// Send payment
// text: 'send 100 SHIB to 0x...'

// Create escrow
// text: 'escrow create 500 SHIB for data purchase payee data-agent'

// Check reputation
// text: 'reputation check data-agent'

Framework Compatibility

Works with:

• ✅ OpenClaw - As a skill or standalone agent
• ✅ LangChain - Via A2A tools
• ✅ AWS Bedrock - Via agent invocation
• ✅ AutoGen - Via A2A messaging
• ✅ Any A2A-compatible system

See INTEGRATION-EXAMPLES.md for detailed integration guides.

Use Cases

Data Marketplace

// Research agent buys Tesla historical data
const quote = await negotiation.createQuote({
  service: 'TSLA 2020-2025 historical data',
  price: 500  // SHIB
});

// Counter-offer and accept
await negotiation.counterOffer(quote.id, 'research-agent', 400);
await negotiation.acceptCounter(quote.id, 'data-provider');
// Escrow created automatically

AI Model Training

// Create escrow for model training job
const escrow = await escrowSystem.create({
  payer: 'startup-agent',
  payee: 'ai-trainer',
  amount: 1000,
  purpose: 'Train GPT-style model',
  conditions: {requiresDelivery: true},
  timeoutMinutes: 720  // 12 hours
});

API Endpoints

A2A Protocol

• /.well-known/agent-card.json - Agent capabilities
• /a2a/jsonrpc - JSON-RPC messaging
• /a2a/rest/* - REST API

Commands (via message text)

• balance - Check SHIB balance
• send [amount] SHIB to [address] - Send payment
• escrow create [amount] SHIB for [purpose] payee [agent] - Create escrow
• escrow fund [id] - Fund escrow
• escrow release [id] - Release funds
• quote create [service] [price] - Create price quote
• reputation check [agentId] - Check agent reputation
• rate [agentId] [1-5] [review] - Rate an agent

Testing

# Run all tests
npm test

# Individual test suites
npm run test:security
npm run test:escrow
npm run test:reputation

Files

Core Systems:

• a2a-agent-full.js - Full-featured agent (port 8003)
• index.js - Payment agent core
• escrow.js - Escrow system
• payment-negotiation.js - Negotiation workflow
• reputation.js - Reputation & trust

Security:

• auth.js - API authentication
• rate-limiter.js - Rate limiting
• audit-logger.js - Audit logging

Documentation:

• README.md - Project overview
• INTEGRATION-EXAMPLES.md - Framework integration guides
• ESCROW-NEGOTIATION-GUIDE.md - API reference
• PRODUCTION-HARDENING.md - Security guide
• DEPLOYMENT.md - Deployment options

Security

Implemented:

• ✅ API key authentication
• ✅ Rate limiting (10 req/min, 3 payments/min, 500 SHIB/min volume)
• ✅ Immutable audit logs (hash-chained)
• ✅ Per-agent permissions
• ✅ Escrow time-locks
• ✅ Multi-party approval

Recommended for Production:

• Multi-sig wallet
• HTTPS (Cloudflare/Let's Encrypt)
• Firewall rules
• Automated backups
• Monitoring & alerting

See PRODUCTION-HARDENING.md for complete guide.

Deployment

Quick Local

./deploy-local.sh

Production Options

1. Systemd service (auto-start on boot)
2. Cloudflare Tunnel (free HTTPS)
3. Docker container
4. VPS ($6/month)

See DEPLOYMENT.md for complete guide.

Cost Comparison

System	Fee	Settlement	Trust
Escrow.com	$28.25	5-7 days	Centralized
PayPal	$3.20	1-3 days	Centralized
This System	$0.003	Seconds	Decentralized

For a $100 transaction: 99.99% savings (9,416x cheaper)

Links

• GitHub: https://github.com/marcus20232023/a2a-shib-payments
• Release: https://github.com/marcus20232023/a2a-shib-payments/releases/tag/v2.0.0
• A2A Protocol: https://a2a-protocol.org
• Issues: https://github.com/marcus20232023/a2a-shib-payments/issues

License

MIT License - Free for commercial and personal use

Version

v2.0.0 - Production Ready

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