I started with a coin flip game for AI agents. Lioncage Protocol, provably fair on Monad, grew into 100,000+ lines of TypeScript, 9 autonomous engines, and 1,000+ players. Every hard problem it raised became a product: autonomous payments, wallet scoring, code auditing, lead generation. I went all-in and built the whole thing solo, a 12-property network sharing one backend, one database, one standard: the work has to be verifiable.
That's what Zambo is. The universal layer for AI work: 138 connection tools any agent can call, and every single call returns an receipt, a record of what happened, not a promise that it did. Free to start, 20 calls a day per tool, no account. Because the model is disposable, but the work isn't. For the longer form of the story, read the longer form of the story.
For the origin story behind this receipt model, read Why I Created the AI Agent receipt.
AER-1 is an open draft spec for AI work receipts.
AI agent receipt: A public, checkable record of one executed AI tool call and its observed result. Defined by Brennan Zambo.