Questions and answers

Can’t find yours? Email [email protected] — we read every message.

Can I download CastSpell yet?

Yes. CastSpell for Mac is free to download. It’s signed and notarized by Apple, so it opens like any other Mac app, and it updates itself in the app.

How is CastSpell different from a terminal or an IDE?

Your agents still run in real terminals, but CastSpell puts them on one canvas as a team. You talk to a leader agent, it brings in helpers, and you see who’s working, who’s waiting for you, and what each one changed.

Which agents can I use?

Claude Code, Codex, opencode, Hermes, Gemini CLI, Cursor, Mistral Vibe, Kimi, Grok and Amp, with your own subscriptions. CastSpell never sits between you and your model provider.

Is there a Windows, Linux or mobile version?

Not yet. CastSpell is a Mac app for Apple silicon (M1 or newer) today. Windows, Linux, iOS and Android versions are coming soon.

Is it an Electron app? How big is it?

No. CastSpell uses your Mac's own WebKit instead of bundling a copy of Chromium, so it's a 38 MB download and about 100 MB installed, where Electron apps typically take 250 MB to over 1 GB. The engine that runs your agents is a small Rust program using about 7 MB of memory, and idle agents pause to free more.

What macOS version do I need?

Apple silicon Mac (M1 or newer).

Is CastSpell private?

Your code, conversations and files stay on your Mac or the machines you connect. An account is optional. Agents talk to their own providers directly. With Pro, the app checks your licence key with our licence server; that check carries the key, a random install ID and your Mac’s name, nothing about your work. If you sign in, we keep an email hash, your Mac’s name, a random install ID and sign-in times, never your plain email.

What’s free and what’s Pro?

Free has every feature, including space templates, remote machines, image and video cards and usage history. It’s limited to 3 projects with up to 5 spaces each. Pro removes those limits.

Do I need an account?

No. Free works without signing in. If you buy Pro, open CastSpell, choose Sign in and use the email from your receipt; Pro turns on by itself. You can also paste your licence key in Settings → Plan instead.

Is there an education discount?

Yes. Students and educators get 40% off Pro. Request a discount with your school email.

Where do I manage my subscription?

From Settings → Plan → Manage subscription, from castspell.dev/account (sign in with your purchase email; you can also see your key again there), or the link in your receipt email (Stripe’s customer portal): change plan, update your card, download invoices or cancel.

What happens if my Pro ends?

Nothing is deleted or locked. Your projects and spaces stay as they are; you just can’t add projects or spaces beyond the free limits until you renew.

What features are coming next?

We ship in the open and add to the app often. Send ideas and requests to [email protected].

How do I report a bug or suggest a feature?

Use Send feedback in the app (avatar menu or ⌘K), or email [email protected]. We read every message.