Google's Managed Agents announcement says Gemini API users can define custom agents as versionable files using AGENTS.md and SKILL.md while running them in isolated Linux environments, a small file-system detail with platform consequences for every team trying to make agent behavior portable. [1] Tuesday's paper grouped Anthropic, Stainless and Microsoft around the fight to move agents beyond chat, and Google's contribution is unusually concrete: the agent is becoming a directory format.

The post describes a single API call that provisions a remote environment where an agent can reason, call tools, execute code, manage files and browse the web, while preserving state for follow-up interactions; that sounds like infrastructure marketing until one notices the file names, because standards often arrive first as examples developers copy without ceremony. [1]

X will treat this as another entry in the coding-agent horse race, with screenshots doing the work that architecture diagrams cannot, but the more durable contest is quieter: whoever teaches developers where instructions, skills and permissions live may own the workflow even when the model changes, and Google has now named the files it wants in that workflow first publicly, before rival teams standardize their own equivalents in repos [1].

-- DAVID CHEN, Beijing