Hedron

Hedron envisions a future where autonomous agents orchestrate complex workflows across blockchain networks—negotiating contracts, processing payments, detecting fraud, and making intelligent decisions—all without human intervention.

Our ecosystem integrates:

AP2 Protocol - Agent-to-agent payment negotiations A2A Protocol - Standardized agent communication x402 Payment Standard - Autonomous cross-chain settlements Hedera HCS - Decentralized messaging infrastructure

Hedron is built on TypeScript using the Hedera SDK (@hashgraph/sdk), the Hedera Agent Kit (@hashgraphonline/standards-agent-kit) for A2A messaging, and ethers.js for EVM interactions. The system connects three protocols: A2A for agent-to-agent messaging on Hedera Consensus Service; AP2 for payment negotiations; and x402 for settlement via a local facilitator to avoid external API calls. Agents coordinate through HCS topics: the AnalyzerAgent queries accounts and proposes actions; the VerifierAgent uses GPT-4o-mini for validation and fraud checks; and the SettlementAgent executes payments on either Hedera (HBAR) or Base Sepolia (USDC) based on PAYMENT_NETWORK. I use LangChain for LLM orchestration, fallbacks when the LLM API is unavailable, and a HITL approval workflow for large amounts. Settlement supports HBAR and USDC using a common interface that selects the correct network, wallet, and contract via the Hedera SDK for native HBAR and ethers.js for EVM.