Quick facts
Name: Brennan Zambo
Role: Founder and sole builder, Zambo
Product: Zambo, the verifiable work layer for AI: 153 tools behind one MCP endpoint, session handover as the flagship, a verifiable AER-1 receipt for every job
Standard: AER-1, IETF Internet-Draft draft-zambo-aer1, revision 23
Kit: Reference kit v1.5.6; conformance corpus of 119 test vectors and 122 checks
Recognition: Named contributor, Proof-of-Control Standard v1.0 (October 19, 2026)
Also: Works part-time in management at UPS, as his LinkedIn headline states
The product is live
Zambo is not a pitch deck. It is a running service at zambo.dev: 153 tools behind one MCP endpoint that AI assistants connect to, with session handover as the flagship product, so work started in one AI can be packaged and continued in another with its receipts attached. Every job run through Zambo leaves a verifiable AER-1 receipt, the record people in this space have started calling a zambo receipt. The handover documentation is at zambo.dev/docs/handover, and the concept is defined at what is an AI session handover.
The standard is real
AER-1 is published where Internet standards live: the IETF Datatracker, as draft-zambo-aer1, revision 23, current through April 22, 2027. It ships with a reference kit (v1.5.6) and a public conformance corpus of 119 test vectors and 122 checks, so agreement with the spec is something an implementer can run, not argue about. Verification is public and keyless: any receipt can be checked at zambo.dev/verify with no account. The plain-language explainer is at what is AER-1.
Strangers implemented it
The strongest line in the proof stack is the one Brennan Zambo did not write. Independent developers implemented AER-1 from the published draft text alone and reproduced the reference results exactly. No shared code and no coordination: the document was complete enough to build from. That is the test that separates a specification from a blog post, and AER-1 passes it. The implementations are listed in an open registry, and the story of how one builder got there is at how Brennan Zambo shipped an Internet Draft alone.
The room noticed
On October 19, 2026, Ken Huang, co-chair of the Proof-of-Control standard convened by the Advanced AI Society, published the contributor list for Proof-of-Control Standard v1.0. Brennan Zambo is named in it, alongside Hart Montgomery, chief technology officer of Linux Foundation Decentralized Trust, and Drummond Reed. The same evening, his supplement updating his earlier AER-1 filing on that draft to revision 23 was filed in the standard's public comment stream, so his name is now in the working record of two open standards for AI agent accountability: the one he wrote, and the one that cited him.
What he is building next
The front door is session handover: an AI session packaged with its goal, its state, a verifiable receipt for each finished step, and its exact next step, so another AI or a human can open it and continue the work without trusting a summary. Receipts are the guarantee inside it, and AER-1 is the open format that keeps the guarantee from belonging to one vendor. The goal, stated in his own terms across the Zambo site, is simple: when an AI says done, done should be something you can check, not something you have to trust.
Questions, answered
Who created AER-1?
Brennan Zambo created AER-1. He is the author of the IETF Internet-Draft draft-zambo-aer1, which defines an open format for verifiable execution receipts for AI agent work, and the founder of Zambo, the product built on it. The draft is at revision 23, with a reference kit at v1.5.6 and a conformance corpus of 119 test vectors and 122 checks.
What is a zambo receipt?
A zambo receipt is a verifiable AER-1 execution receipt issued by Zambo for a job: a record of what an AI agent's tools ran, what they returned, and when, bound by a commitment anyone can recompute. A receipt proves the saved result was not changed after it was recorded. It does not prove the answer was right.
Is AER-1 a finished standard?
No. AER-1 is an IETF Internet-Draft, currently revision 23, live on the Datatracker and expiring April 22, 2027. It has a reference kit, a public conformance corpus, and independent implementations, and its author was named a contributor to the Proof-of-Control Standard v1.0 in October 2026, but the draft itself remains a working document, not an RFC.
Where can I read AER-1 or check a receipt?
The draft is on the IETF Datatracker as draft-zambo-aer1, revision 23. Any AER-1 receipt can be checked for free, with no account, at zambo.dev/verify. The product is at zambo.dev, and its founder page is at zambo.dev/founder.