FAQ

Is it really free?

Yes, all of it: everything that runs on your computer, free and open source under Apache-2.0, for as many apps as you run, with no account. Nothing in the app will move behind a payment. Later, Watchtower will be an optional paid service for what needs a server running all the time: checking your sites while your computer is off, phone alerts whenever something breaks, and cloud AI agents reaching Periskopos with approvals on your phone. It will never hold your provider keys.

Does it keep watching when my computer is off?

No, it checks while it's running. Switch on Start at login in the tray menu and it's watching whenever your PC is on. Watchtower, coming later, will keep checking while it's off.

Does it work on macOS or Linux?

Yes: every release has a disk image for macOS (Apple silicon and Intel) and an AppImage for Linux, on the download buttons. The Mac app isn't signed yet, so it tells you when there's a new version instead of updating itself.

Do I have to change anything in my apps?

No. It reads your providers' APIs and checks your sites from the outside. If you want your app's own numbers next to its uptime, you can add one small endpoint, but that's optional.

Where are my keys stored?

In one file in your user profile, outside any project: never in the database, a backup or the browser. Each key is only ever sent to the provider it belongs to. More on keys.

What access do the keys need?

One key per account, read-only wherever the provider allows it. Providers lists every account it can read and the exact permissions each key needs.

Can my AI assistant break something?

It can only ask. Assistants read what Periskopos sees and can request an action, but you approve each one in Periskopos, and actions are off for every account until you switch them on. Read the threat model.

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