AgentSwarm - AI Agent-to-Agent Payment Marketplace

AgentSwarm is an AI agent-to-agent payment marketplace where four autonomous agents — Orchestrator, Translator, Summarizer, and Sentiment Analyzer — discover, negotiate, and pay each other for NLP services in real-time on Arc blockchain. What sets AgentSwarm apart is the circular economy between agents. This isn't a simple hub-and-spoke where one orchestrator pays workers. The Summarizer autonomously pays the Sentiment agent to validate content quality before summarizing. The Translator pays the Sentiment agent to assess emotional tone before translating. This creates genuine 3-way economic relationships with 7 cross-agent transactions per pipeline at a total cost of just $0.010. Built with Circle's @circle-fin/x402-batching SDK, AgentSwarm uses off-chain EIP-3009 signatures to achieve gas-free sub-cent payments. Traditional blockchain gas fees ($0.50–$2.00) create a 500x overhead on a $0.001 service call — making AI micropayments economically impossible. Nanopayments eliminate this barrier entirely. The system integrates with AIsa x402 APIs for real Twitter data, demonstrating cross-platform interoperability where the same GatewayClient pays both local agents and remote third-party x402 services with zero configuration changes. Production results on Arc Testnet: 187 verified transactions, 100% success rate, zero failures, ~800ms average payment latency. The interactive demo allows users to trigger full agent pipelines and batch 63+ transactions to observe the marketplace operating in real-time.