Concept
The brain is local. The spine is cloud. They don't swap jobs.
Cloud tools run your data on someone else's computer — Destaris runs it on yours. The work happens on your machine; the cloud only stores and coordinates.
Where work runs
Your machine does the work.
Every step actually executes on your machine — your agents, your files on disk, your keychain. Nothing about the work itself ever ships off to run on a server you don't control.
Where state lives
The cloud coordinates — it never runs your work.
Run status, timings, and schedules live in the cloud so you can see runs from anywhere. The execution itself never leaves your machine.
Your machine
the brain — runs the work
The cloud
the spine — coordinates, never executes
The boundary only runs one way: metadata about a run crosses to the cloud so you can see it from your phone — the run itself, and everything it touches, stays exactly where it started.
What never leaves
Your machine keeps what matters.
Your keys never leave
API keys, tokens, and credentials live in your OS keychain. The cloud never sees them, let alone stores them.
Your data never leaves
Payloads, files, and the actual content a workflow touches stay on your machine — never uploaded, never processed elsewhere.
Only run metadata syncs
Status, timings, and cost sync to the cloud so you can see a run from anywhere — without the run itself ever touching a server you don't own.
Go deeper on local brain, cloud spine
Read the concept doc for the full model — what runs where, what crosses the boundary, and why the cloud only ever coordinates.