One home for everything personal AI should be.

Personal AI platform — built so your daily services finally live under one roof.
Smart home, finances, scheduling, voice, communications — most people stitch these together across a dozen apps and accounts. Syntaur consolidates them. One interface, one identity, one place where your AI can actually be useful.
About Syntaur

Built for people, not for vendors.

Syntaur exists because personal AI shouldn't mean fragmenting your life across services that don't talk to each other.

Every module Syntaur ships — smart home, tax preparation, scheduling, voice, communications — is designed around the same operating principle: your data, your devices, your choice of partners, all in one place.

We build pure-Rust services that run on infrastructure you control. We integrate with established providers where the regulated industries require it (tax filing, payment processing, e-file submission), and we act as the intermediary that brings their service to you without standing between you and them.

We don't sell your data. We don't lock you into our cloud. We don't mark up the services we route to. We just make personal AI feel like it should.

Operating Principles

  • Local-first. Your home runs on your gateway, not our cloud.
  • Pure Rust. Every service we own is Rust. No proxy languages.
  • Pass-through partnerships. Third-party services are routed at cost.
  • Open by design. Standards-based (Matter, MQTT, IMAP, etc.) — not proprietary lock-in.
  • One identity. You sign in once, everywhere.
What makes Syntaur different

An AI that actually remembers you.

Most personal AI starts every session from scratch. Syntaur doesn't — and where we're heading goes much further than where the industry is today.

What's shipped today. Every Syntaur module is backed by a persistent, structured memory vault. It's human-readable, lives in a format you can audit and edit yourself, and survives across sessions — so conversations build on what came before instead of resetting each morning.

Memories are written deliberately, not vacuumed up. They're organized by topic and tagged for retrieval, so relevant history surfaces when it's actually useful — not as a fire hose of "things you said three months ago."

This already changes the daily experience: your home agent remembers which devices misbehave, your scheduler remembers what you've committed to, your finance agent remembers the context behind decisions you made months ago.

In active development — a preview

We're building the next layer right now. A sneak peek at what's coming:

  • Self-curating memory. A layer that learns what's worth remembering without being told, and lets irrelevant context fade on its own.
  • Per-module character development. Each module's AI grows its own personality, vocabulary, and rapport with you over time.
  • Cross-module recall. Something noted in one module surfaces in another when it's relevant — even if you didn't ask.
  • Episode memory. The system remembers struggles, decisions, and the stories behind them — not just facts.

This is what we mean when we say personal AI. Not an assistant that forgets. A system that becomes more useful the longer you have it.

Capabilities

Modules across the surfaces of daily life.

Each module is built to stand on its own and to compose with the others — all of them sharing the memory layer above.
Smart Home

Devices & networks

Multi-protocol device control across Matter, Thread, BLE, MQTT, and vendor APIs. Pure-Rust gateway, no vendor cloud dependencies.

Tax & Finance

Year-round tax picture

Continuous bookkeeping, document organization, and prepared filings — routed through authorized e-file partners at pass-through cost.

Scheduler

Calendar, tasks, habits

One coherent view of meetings, todos, and habits across personal and shared calendars. Voice and photo intake.

Voice

Pendant & conversation

Local speech-to-text and AI assistance via a Bluetooth pendant or your phone. Designed for hands-free interaction throughout the day.

Privacy

Defense in depth

Per-device privacy policies, DNS sinkhole, and network segmentation for the smart devices in your home that shouldn't phone home.

Engine

The platform underneath

The pure-Rust runtime — vault, scheduler, browser engine, and message broker — that every Syntaur module is built on.

For partners

Are you a service Syntaur should integrate with?

We work with API partners across tax, finance, smart home, scheduling, and more — wherever regulated infrastructure or established expertise means it's better to integrate than rebuild. We pass your service through to our users at cost; you keep the full per-customer economics and the regulated relationship.

partnerships@syntaur.app →
We reply to every inquiry. No automated funnels.