We install and support a private AI assistant that handles your research, document prep, and follow-ups — running 24/7 on your own hardware. No technical knowledge required. We handle everything.
The Castellan guarded the castle while the lord was away.
Loyal. Watchful. Never off duty.
That's exactly what we build for you.
You're running a business. You don't have time to research competitors, draft follow-up documents, or remember every deadline — but those things still need to happen.
A Castellan agent handles that work for you. It lives on hardware in your office, knows your business context permanently, and is available in Telegram whenever you need it. You own the hardware. You own the data. We handle all the technical work.
ChatGPT and Claude are great for one-off questions. Castellan is built to work inside your business — configured for you, running on your hardware, supported by a team.
| Claude Pro / ChatGPT Plus | Castellan | |
|---|---|---|
| Knows your business | ✕ Resets every session | ✓ Configured for you permanently |
| Generates your docs | ✕ Copy-paste from chat window | ✓ Creates PDFs, Word docs, spreadsheets, presentations & HTML on demand |
| Analyzes images & files | ✕ Upload in browser only | ✓ Send photos and files via Telegram — analyzed instantly |
| Builds charts & reports | ✕ No data visualization | ✓ Generates charts and visual reports from your data |
| Reminds you of deadlines | ✕ No reminders | ✓ Sends text reminders automatically |
| Available 24/7 | ✕ Only when you open it | ✓ Always running on your hardware |
| Your data stays private | ✕ Stored on their servers | ✓ Lives on hardware in your building |
| Ongoing support | ✕ You figure it out | ✓ We install, harden & support it |
| Security hardening | ✕ None | ✓ 160-rule checklist + dual-model QA |
| Ownership | ✕ You're renting a subscription | ✓ Hardware & config are yours outright |
Open-source AI tools are free to download — but getting them running, secured, and maintained requires terminals, Docker, OAuth, and ongoing troubleshooting. Castellan handles all of that. You just use the assistant.
Other services charge $5,000+ for a one-time install with two weeks of support. Castellan costs $699 to set up and $99/mo for ongoing support — with a 160-rule security checklist, on-premises hardware, and a team that stays with you.
Castellan started the way the best things do — around a kitchen table. Austin saw that small business owners and professionals were being left behind by AI tools built for engineers. Robert spent 25 years building enterprise infrastructure for companies like The New York Times, TD Ameritrade, and Pitney Bowes. Between them, the idea was simple: what if we could give every small business the kind of private, secure AI that only large enterprises can afford?
That's what Castellan is. Austin handles every consultation, every configuration, and every client relationship personally. Robert architects the network and security infrastructure behind every install. When you work with Castellan, you're not talking to a support queue — you're talking to the people who built it.
We learn your workflows, your tools, and exactly how you want your agent to behave. One conversation, zero jargon.
We configure your agent, set the rules, connect the tools. Everything is built to your exact spec — then reviewed by a second AI before touching your hands.
160-rule security checklist. Spending caps. Network restrictions. Dual-model QA. Nothing goes live with open Critical or High issues.
Ongoing support, model updates, and capability upgrades. Your agent gets sharper as your needs evolve. We're here for the long run — and new integrations are always on the way.
Personal intelligence, properly kept.