People
Everyone with an account. Each person has their own passkeys, PIN, and completely separate data. The checkboxes control which apps they can use — changes take effect on their next sign-in (their current session keeps its old access for up to 18 hours).
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API Access
A personal key that lets an external trigger — an iOS Shortcut, a webhook — drop a to-do straight into Horizon without opening the app. Send a POST to the endpoint below with the key as a bearer token.
Send Authorization: Bearer <key> with a JSON body like {"title":"Buy milk","area":"personal","importance":3} — only title is required. Rotating the key immediately breaks any automation still using the old one.
At-Rest Encryption
All written content (tasks, notes, journal entries, team data) is encrypted with AES-256-GCM before it's stored.
New and edited entries encrypt automatically.
Re-embeds every note, task, and entry so semantic search can filter straight to your account's own content (new items index this way automatically). One-time after the 2026.07.18 update; safe to re-run. Uses a batch of AI calls proportional to how much content exists.