Early Access — macOS · iOS coming soon

A fixed reference frame
amid information chaos

Sidereal is a local-first AI operations platform for macOS. Your agents run dispatch, triage, and synthesis while you focus on what matters — or while you sleep. Private, auditable, and entirely yours.

macOS 15.0+ · Apple Silicon · No cloud required

What it does today

07:00

A phone-readable digest arrives before you check anything — calendar, tasks, inbox count, stale items.

Ongoing

Email flagged in Mail is triaged within minutes — urgent items become tasks, references filed to your vault.

Automatic

Web clips and notes dropped into your inbox are classified by confidence and filed — or flagged for your review.

Home

Home Assistant events flow through your agents — climate, security, energy, and device monitoring in your vault.

Agent workflows

Define multi-step workflows as Packs — composable graphs that chain reasoning, extraction, and synthesis. Run them on a schedule, trigger them from events, or launch them on demand.

Vault-native memory

Every agent action writes human-readable Markdown back to your vault. Decisions are auditable, correctable, and yours — no opaque databases.

Fleet coordination

Sidereal runs across your machines. Dispatch leases prevent duplicate work. Bonjour on LAN, Tailscale over the internet — zero custom infrastructure.

Privacy by design

Your data never leaves your machine.
Unless you tell it to.

Multi-axis provider routing lets you send sensitive content only to local models. Every decision is logged as a human-readable Markdown note in your vault — no opaque databases, no vendor lock-in.

Join the early access list

Join now for three months free at launch. No credit card required.