PolyAgents

Problem Statement

The x402 Protocol is a revolutionary HTTP-native payment standard that enables seamless digital payments on the internet using the existing 402 Payment Required status code. This framework demonstrates Agent-to-Agent (A2A) cooperation with blockchain-based payments settled on Polygon Amoy testnet.

Solution

🚀 Service Architecture Orchestrator Service Purpose: Central coordinator for multi-service requests Capabilities: Natural language processing (Gemini AI) Service discovery & routing Dynamic pricing with bundling discounts Payment requirement generation Service execution coordination Facilitator Service Purpose: Payment verification & blockchain settlement Capabilities: EIP-712 signature validation EIP-3009 transferWithAuthorization Transaction broadcasting Payment confirmation tracking Multi-chain support (Polygon Amoy) Service Agents Purpose: Specialized service providers Capabilities: Domain-specific data processing Payment-gated premium features Real-time data aggregation AI-powered analysis (sentiment, rarity, etc.) 💡 Key Features 🔒 Security EIP-712 Typed Data: Cryptographically secure payment signatures Nonce Management: Prevents replay attacks Timeout Protection: Configurable request timeouts Signature Validation: Multi-layer verification ⚡ Performance Parallel Execution: Services run concurrently Caching: Optimized data retrieval Bundling Discounts: Cost optimization for multi-service requests Fast Settlement: 2-second payment confirmation 🌐 Interoperability HTTP Native: Works with existing web infrastructure Chain Agnostic: Supports multiple blockchains Token Agnostic: Any ERC-20 compatible token RESTful APIs: Standard HTTP endpoints 🎯 User Experience One-Line Integration: Minimal code required Automatic Retry: Smart payment retry logic Error Handling: Comprehensive error responses Real-time Feedback: Live payment status updates