YOU STAY THE BOSS
Autonomy you can trust.
SynthOS runs natively on your Mac with your own AI keys, and every tier ships the same guardrails: it asks before anything risky, records a receipt for every action, keeps a full audit trail on your machine, respects a hard spend ceiling you set, and stops everything at once on the kill-switch. The guardrails are never the upsell — autonomy you'd actually delegate to starts with autonomy you can audit.
WHAT YOU GET
It asks first
Anything risky pauses for your yes — with an undo window after. Bold with the busywork, careful with the rest.
STILL — A HELD APPROVAL
In production
Every action on the record
A complete local audit trail — what ran, what it touched, what it cost. Look back at any run, any time.
Your keys, your bill, your Mac
Bring your own AI key with zero markup — that bill stays between you and your provider. Your keys never sync; they stay on your Mac.
A ceiling and a kill-switch
Set a spend cap it can never cross, and stop everything at once when you say so. Both ship in every tier.
AT A GLANCE
The facts, in one place.
| Approvals | Before anything risky — with an undo window |
|---|---|
| Receipts | Every action recorded · full local audit trail |
| Keys | Bring your own provider key — zero markup |
| Spend | A hard ceiling you set |
| Kill-switch | Everything stops at once |
| Disclosure | [email protected] · /.well-known/security.txt |
Best for anyone who wants the leverage without handing over the wheel.
QUESTIONS, ANSWERED
Which guardrails cost extra?
None. Receipts for every action, the check-in before anything you'd regret, the spend ceiling, and the kill-switch ship in every tier — the guardrails are never the upsell.
Where do my credentials live?
On your Mac, and nowhere else. Credentials are the one thing that never syncs — they sit in your Mac's keychain, not in the vault and not on our servers. Your vault itself does sync through your private cloud, account-bound and encrypted in transit, and you can turn that off per vault.
SEE IT YOURSELF
Stop reading. Drive it.
Take the interactive tour in your browser — then get the real thing on your Mac.
From $19/mo · Bring your own key · Private cloud sync · Cancel anytime.