Astryx

the agent-reads-the-same-reference idea is the right instinct. what happens when astryx itself ships a breaking change to a component's props, does the CLI reference update live so the agent always sees current state, or is there a window where an agent working from a slightly stale local copy of the docs confidently generates code against an api that no longer exists

token-level theming plus a full source eject covers the exact case that always bites me. every design system i've built on eventually hits one component the tokens can't express, and then it's fork-the-whole-thing or wrap it in hack divs. 90% through tokens, own the source for the last 10% — that's the escape valve i want.

Every big company says their design system is "built for agents" now. What's actually different here versus just having clean, well written docs that a model can parse?

Hooked an agent up to our old design system last year and it kept inventing props that didn't exist. If Astryx actually solves that, it's worth trying for our team.

Agent-readable design-system APIs are a practical shift. The key is making the allowed component contracts easier for agents to follow than inventing their own props; otherwise the system still depends on a human cleaning up drift after the fact.

Does the CLI reference update automatically when components change?

8 yrs of internal use means it's battle tested, but packaging something for public use is a different job entirely.

No mention of Vue or Svelte support here that's a gap for some teams.

How does the agent readable API actually compare to what Radix or shadcn already expose? Those aren't bad either.

Token level theming vs full eject is a real tradeoff. The more teams eject the less they benefit from upstream fixes. Curious how often that happens in practice.

Hi everyone!Meta has open-sourced Astryx, the design system that has powered over 13,000 internal tools for the last 8 years. It’s out now in beta on @React and StyleX.Astryx was built from the ground up for agents. Most design systems assume a human is reading the docs. Astryx lets agents read the same API reference through the CLI, so your agents build UI using the exact same system a human would, rather than hallucinating component props.They also avoided the usual customization trap. You can theme it at the token level so your app doesn’t look like a Meta clone, but you can also fully eject a component’s source code if you need absolute control.