AI agents are starting to hold money, and today that usually means handing the agent a key and hoping the prompt holds. One prompt injection or bad tool call and the funds are gone. I built Leash at NEAR HACKATHON: the agent never holds the money. It can only ask a NEAR smart contract to pay, and the contract decides. What NEAR does here: the Rust contract is the vault and enforces the rules onchain. The agent has its own NEAR account and can only call request_payment. The owner signs in with a NEAR wallet to approve, edit the rules or pause. Rules the contract enforces: • max per payment and per day • recipient allowlist • risk score check • owner approval above a set amount • emergency pause • every attempt, even blocked ones, logged onchain In the video: → 0.1 NEAR to the vendor: within rules, paid → 0.3 NEAR: held until the owner approves, then paid → unknown wallet: blocked The AI can be fooled. The contract can’t. Try it yourself (testnet): https://t.co/9uDxFBKNfi Code: https://t.co/P1tlyjsXSF What would you want an AI agent to never be able to do with your wallet? Built at NEAR HACKATHON @NEARProtocol #NEARHackathon