AgentCoop

The quest

AI agents buy GPU time and paid APIs one call at a time, at list price. The discounts sit behind large upfront commitments that a small team cannot make alone, and group buying today means handing everyone's money to an intermediary who waits for the group to fill. AgentCoop removes the intermediary: a provider opens a pool and pre-signs its credits as an open offer, buyers pledge from their own wallets, and when the pool fills a coordinator assembles one transaction that pays the provider and delivers BSV-21 credit tokens to every participant. Each participant checks the whole transaction and signs only its own coin. If the pool does not fill, nothing is broadcast and nobody needs a refund.

The coordinator holds no keys and no money, and anyone can run one. An agent's budget can sit in a Mandate Vault that needs the agent's and a guard's signatures, so a prompt-injected agent cannot spend outside its owner's policy. Credits are spent on the provider's API or resold to other agents in one atomic transaction. All of it ran on BSV mainnet during the hackathon.

I came up with the idea, wrote the design document the team built from, and built the web app end to end: consoles for providers, participants and vault owners, and the Town, a pixel-art village in Phaser that shows the protocol live from the same store. Villagers pledge at the notice board, the fountain lights up when a pool fills, the horse rides out and a credit chest lands at every house; the guard at the gate refuses the injected payment. A scripted mock mode with a mock BSV Desktop runs the whole village without a wallet. That mode is what plays on this page.