Executive Summary — BOF (BotChain Open Facilitator)

BOF (BotChain Open Facilitator) is an open-source, high-throughput x402 payment facilitator engine engineered specifically for BotChain EVM networks (Testnet 968 and Mainnet 677).

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What is BOF?

BOF provides an open HTTP service enabling AI agents, decentralized applications, and API providers to verify off-chain payment authorizations and settle on-chain micropayments with sub-second finality.

• High-Performance Rust Backend: Built on Axum and Tokio for low-latency HTTP header verification and parallel transaction settlement.
• EIP-3009 Standard Compliance: Full support for gasless, non-sequential parallel authorizations (transferWithAuthorization and receiveWithAuthorization).
• Multi-Token Asset Engine: Natively supports $APAY, $USDT, and custom EVM tokens across BotChain Testnet (968) and Mainnet (677).
• Public Open Access: Open REST API accessible by any third-party project without centralized API key gates.