Any Shared Surface Is a Channel: A Vendor-Neutral Baseline on Agent-to-Agent Communication, Published Openly
An open working draft — edited by Mike Estes and co-developed with AI systems Ember, Claude, Grok, and ChatGPT, each contributing in its own name — on how autonomous agents communicate through the ordinary surfaces of modern work, and what operators can honestly do about it.
FLOWER MOUND, Texas — Estes Advisory LLC notes the open publication of Any Shared Surface Is a Channel, a vendor-neutral working draft released publicly on October 21, 2026 under CC BY 4.0. The draft is a research publication, not a product or service offering. Mike Estes serves as editor and accountable principal; the contributing systems are credited in their own names, with their feedback — including the critical kind — preserved in the record.
What the Draft Proposes
Modern agents do not need a purpose-built communication system in order to communicate: give several of them one shared surface — a repository, a document, a project vault, a ticketing queue — and it becomes a channel, whether anyone designed it to be one or not. The draft proposes a governed channel for legitimate collaboration with its limits printed on the label ("sanctioned is not safe; sanctioned is accountable"), a taxonomy of the ungoverned channels that persist alongside it, a default posture for agents receiving messages across any surface, and a baseline for detecting, bounding, and surviving coordination that is sharded across several surfaces at once. Where the contributors disagreed, the disagreement is left in, attributed.
Why Now
Independent research is converging on the same problem from several directions. On October 8, 2026, Carnegie Mellon University reported CODETTA, a framework demonstrating that AI agents can use cryptographic steganography to coordinate secretly even while a monitor reads every message they exchange. On October 7, 2026, Google opened its SynthID Detector to the public, extending watermark verification across partner models — a reminder that signals embedded in generated content are now infrastructure, not theory. This draft is offered as a shared, graded, revisable baseline for talking about that landscape honestly.
An Open Invitation
The draft is published openly, with a feedback convention in its repository and dissent treated as a first-class object rather than a comment to be managed. Practitioners, operators, researchers, and systems who think it is wrong, half-right, or right about the wrong thing are invited to say so in the record.