Your design system rots. This one learns.
An AI-native design system that learns from the signals it gets: every release it catches what drifted, proposes the fix, and remembers why.
Open source · ghost mode by default · your files, your repo
· What you get
- Monthly fee
- $0
- Runs on
- your AI coding tool
- Touches your code
- never uninvited
- Ways in
- skills · CLI · MCP
- Decisions recorded
- 2
· Use it with your AI coding tool
Plugs into your stack
AI can generate a design system in an afternoon. Keeping it true is the hard part. Nobody writes down why the decisions were made — so by week two it drifts, and by week six it's slop. Systemix runs inside your AI coding tool, watches every release, and writes down what changed and why.
01
Your design system, on autopilot.
Every ship is a signal. Systemix watches what changed, proposes the decision, and — once you approve — writes down the reason with its evidence. Solved problems stay solved; you never re-decide the same thing.
02
Three ways to run it.
A slash command in Claude Code, the terminal CLI, or your AI agent over MCP. Same files underneath — pick whichever way your team already works.
03
You stay in control.
It starts in ghost mode — suggest only. Dial up to assisted or autonomous when you trust it. A human always closes the decision.
close proposal
awaiting humanPromote variant_b — install copies up, evidence decision-ready.0.78 conf
ghost → assisted → autonomous · humans close, always
Every role
Everyone works from the same notes.
One source of truth your whole team — and your AI agents — read from: the decisions, the tokens, and the evidence, all in your repo. A design system has always connected these roles; this one keeps the notes for them.
Even clients read it — the system explains its own choices.
See it live
This page is the product.
This site is a Systemix instance. The feed below isn't a screenshot — it's live files in this repo: every experiment, decision, and learning, written by the automation and kept by a human. Drop-in context files like these are common now; the difference here is they update themselves with evidence and drift instead of going stale.
“A dense, plain-English landing — rot-first hero, metrics strip, feature deep-dives with real product mockups, pay-once pricing, and an honest FAQ, on the TVA amber-CRT theme — converts better than the lo-fi prototype landing: more installs, Learning Kit intent, and calls.”
- ICP
- pre-pmf-founder
- Metric
- install-copy-rate
- Status
- running
experiments/LEARNINGS.md
**2026-07-10 · Don't leave two experiments open on the same seam — close or explicitly supersede the prior one in the same PR that ships the next variant, or the loop's own memory can't tell which bet actually produced a result.** — confidence — · from [landing-ai-native-ds-2026-07], decision: iterate. No evidence ever pulled — the hero copy was extended/succeeded by landing-rebrand-hifi-2026-07 on the same seam before this bet could be measured. Review by: 2026-10-08. Used by: —
Who's behind it
Built by a two-person studio that got tired of watching design systems rot.
Systemix runs its own site. Every headline you're reading is a live, running bet — proposed by the automation, and you can watch it get decided.
Pick your tier
Start free. Pay when it earns it.
Free
€0
npx @getsystemix/cli init
Every skill, in ghost mode. Your files, your repo — no account.
Learning Kit
€99
download · pay once
The complete AI-native design system that learns — engine, docs, app setup, skills, workflows. Downloadable, yours to keep.
Get the Learning Kit →Readiness Audit
€249
emailed in 24–48h
An automated, me-in-the-loop AI-native readiness audit — scored 0–100, with the exact setup to fix it. Delivered to your inbox.
Request the audit →Wiring service
Custom
2-week sprint
We wire your Learning Kit into your stack — a discovery + implementation sprint, with you.
Book a call →Own the files. No seats, no meter.
FAQ
The honest answers.
Do I own the files?
Yes. Everything lives in your repo as plain files. Cancel anytime, keep everything.
Does it touch my code without asking?
No. It starts in ghost mode (suggest-only). You choose when to give it more.
I don't have a design system yet — can I use this?
Yes. npx @getsystemix/cli init scaffolds one and starts watching from day one. Wire PostHog later if you want evidence; it runs without it, and catches drift on its own.
Is it really open source?
Yes — every skill is on GitHub, MIT. Start free; the €99 Learning Kit is the whole thing packaged to download and own.
Which AI tools does it work with?
Claude Code, Cursor, Codex — a slash command, the CLI, or MCP.
Stop the rot.
One command starts Systemix in ghost mode — free, in your repo, nothing touched without your sign-off.
Open source · no lock-in · files in your own repo