Secure Managed Agents: Your Agent in the Cloud, Your Tools on Your Hardware

The problem with every "AI agent" product today

There's a quiet trade you're forced to make with every agent platform on the market.

To get a capable agent, you hand someone else your data. The managed-agent clouds run the loop on their infrastructure and host your tools on their servers. The enterprise SaaS seats are locked to their model, their cloud, no custom agent. The consultancies will build you something bespoke — for $350K and three months. And the open frameworks are a box of parts: you get to wire up tunnels, billing, auth, and a secure CA yourself.

For anyone who cares about privacy — a clinic, a law firm, a finance team, a builder with proprietary tooling — none of these are acceptable. Your customer records, your code, your internal APIs should not have to leave your network to get an AI agent.

So we built the thing that didn't exist.

What Aitherium does differently

You get a custom managed agent that runs in the cloud — but your tools and data stay on your hardware.

Concretely:

• Bring your own key. Your agent runs as a hosted twin on your Anthropic account, billed to you. We never mark up inference. We're the control plane — we orchestrate, bind capabilities, meter, and secure — but the agent loop runs on your account, not our GPUs.
• Secure MCP on your own machine. The tools your agent uses (your CRM, your database, your internal services, exposed as an MCP server) run on your hardware. The hosted agent reaches them over a secure Aitherium tunnel with mutual TLS, and authenticates with a bearer token that's supplied only at session time — never baked into the agent, never stored in plaintext, never visible to us.
• A marketplace of capabilities. Tool packs, skill packs, and whole agent packs you apply to your agent in one click. Compose your own. Swap a brain pack and your agent becomes a different workflow.
• A sovereignty ladder. Start managed (we run the control plane), move to private (run the node on your box), or go fully sovereign (self-host everything). You choose how much you run; the agent is yours either way.

As far as we know, we're the only ones offering this combination today: a hosted, customized agent plus secure self-hosted tools, as an easy-button product a non-technical owner can actually set up.

How it works (the 60-second version)

1. You deploy a managed agent. Pick a persona, paste your model key, click deploy. Your agent twin is created in your Anthropic account.
2. You register your MCP server. Run your tools locally (a database connector, a forms engine, whatever), expose it over a tunnel, and register the public URL + a bearer token in your portal. The token goes into encrypted secrets — not the agent body.
3. The agent authenticates at session time. When your agent runs a turn, Aitherium attaches a credential vault to the session so the cloud twin can call your on-prem tools securely — static_bearer over mTLS. Your data flows between your tools and your agent. It never lands with us.
4. You apply packs and re-sync. Buy a skill or tool pack, click "Apply to my Agent," and the twin re-syncs. New capability, live.

The whole design is "control plane, not compute plane." It's why your inference cost is whatever you'd pay Anthropic directly (we add nothing), and why your secrets never have to leave your perimeter.

Why this matters

• Privacy as architecture, not policy. It's not a checkbox in a DPA — your tools physically run on your hardware. There's no copy of your data on our side to leak.
• Price. No inference markup. The platform fee covers the control plane; the heavy compute is on your account or your box.
• Portability. Your agent is packs + a brain you own. No lock-in to a proprietary seat.
• Easy. The hard parts — the tunnel, the CA, the credential vault, the billing, the marketplace — are the product. You click buttons.

Stand one up — the five-minute path

You don't have to take our word for it. Walk the path:

1. Try it first. Open AitherChat and run a live agent turn — no signup. See the quality before you commit. → Try the demo
2. Sign up. Create your account and pick the Starter plan (BYOK + one customized managed agent + the marketplace). → Get started
3. Configure & deploy your agent. Paste your Anthropic key, choose a persona, click deploy. Your hosted twin is live.
4. Download the tools. Grab aither-adk (the agent dev kit), AitherShell (the CLI/TUI), and AitherNode (the local runtime) with a one-line installer — no Python setup, dependencies handled for you. → Download
5. Connect your secure MCP. Run your MCP server locally, expose it with the secure tunnel, and register it under My MCP Endpoints. Re-deploy — your agent now uses your private tools.

That's it. A secure, custom agent — your cloud, your hardware — in an afternoon, not a quarter.

Secure agents. Easy. Your keys, your hardware, our marketplace.

Start with the demo → · See plans → · How secure MCP works →