VCR Protocol

As AI agents begin to hold and spend funds independently, a key problem emerges: there is no standard way to define and enforce what they are allowed to do with those funds. Existing pieces solve parts of the stack: • ERC-8004 provides agent identity • x402 enables HTTP-native payment flows But there is no mechanism to constrain agent spending behavior. VCR Protocol addresses this by introducing verifiable spending policies for AI agents, including: • Per-transaction limits • Daily spending caps • Whitelisted recipients • Allowed tokens • Time-based constraints These policies are stored on IPFS, linked via ENS text records, and made publicly verifiable. Any third-party service can validate an agent’s policy before accepting a transaction, without relying on trust. The policy is on-chain and tamper-evident. Key integrations: • ERC-8004 and ENSIP-25 for identity and policy discovery • BitGo MPC wallets for secure enforcement • Fileverse and IPFS for decentralized storage • x402 for autonomous payment flows • Base as the settlement layer We built this under tight constraints, working with live testnets, evolving SDKs, and designing systems that had to hold under immutable policy conditions.