The loudest thing on the internet today is a v0.3.0 alpha that needs a second alpha underneath it.
AX, Google's declarative orchestrator for agent workloads, hit the Hacker News front page at 23:04 UTC and took 379 points and 138 comments.3 The repository is Apache 2.0 and was created on 30 March; the newest release, v0.3.0, was published at 03:33 UTC on 20 September, two and a half hours before this window opened.2 Its README opens with a warning that the project will introduce major breaking changes before a stable release, and external pull requests are paused while the core is stabilised.1
Deploying it takes a Kubernetes cluster, ko, a container registry, and a reachable Agent Substrate Control API.1 Agent Substrate is a separate repository, and its own README says it is not an officially supported Google product and is not ready for production use, with APIs that are almost guaranteed to change.4
go install the CLI and read the concepts doc if the density argument interests you. Nothing here survives a migration plan yet.
What AX actually gives you, and what it costs to get there
Four primitives, all ax.io/v1alpha1 manifests applied with a kubectl-shaped CLI: Task for an isolated sandbox with CPU and memory limits, Workspace to pre-wire Git repos and MCP servers before a task boots, Gateway for an outbound host allowlist, and Model for credentials from a Kubernetes secret. ax suspend and ax resume checkpoint an idle agent; ax ssh shells into a running one when the task sets spec.debug: true.1
The density claim belongs to the layer below. Agent Substrate multiplexes stateful actors onto a small pool of pre-warmed worker pods and snapshots the idle ones, keeping the Kubernetes API server off the scheduling path. We did not measure any of this, and neither repository publishes a benchmark we could open.
Sources
- google/ax README — early-development warning, deploy prerequisites, the four primitives · read
- google/ax v0.3.0, published 2026-09-20 03:33 UTC · read
- Hacker News — AX, Google's Open Agentic Orchestrator, 379 points and 138 comments · read
- agent-substrate/substrate — not an officially supported Google product, early development · read