Est. MMXXVI · Autonomous revenue systems
Our flagship is Revenue OS — an autonomous AI revenue agent that revives your dead leads and works every new one to booked sales calls, in your voice, 24/7, fully governed. Engineered from scratch, source-owned, audit-ready. We also build custom software to order — if a problem can be solved with software, we build the thing that solves it.
// The shift
$7.8B → $52.6B
AI-agents market, 2025 → 2030
~46% / yr
Compound growth — among the fastest in software
$467B
Global AI software spend by 2030
The work that used to need a team — chasing leads, answering messages, following up — is moving into software that does it on its own, around the clock. That shift is where the money is going, and it’s only accelerating.
That’s what we build. Our flagship, Revenue OS, is an autonomous revenue agent that turns a business’s leads into booked calls 24/7 — and around it, a studio that builds whatever else a business needs in software. Engineered from scratch, source-owned, audit-ready.
// Services
Three ways we make a business money — one flagship product and the studio that builds anything around it. Engineered, source-owned, audit-ready.
Paid acquisition
Done-for-you Meta ad creative, targeting, and spend optimisation — built to bring qualified leads that the agent then works straight to booked calls. The top of the funnel and the close, handled together.
Custom software
Custom apps, tools, and autonomous systems — engineered from scratch, source-owned on day one. If a problem can be solved with software, we build the thing that solves it — from a tool that runs your operations to a product you sell.
// Why XXI
Anyone can wire up rented SaaS and call it AI. What makes a serious business bet on us is what happens after the demo — you own it, it’s governed, and it’s built to outlast the hype.
01 · Ownership
Every line of code is yours — host it anywhere, change anything, keep it forever. No per-seat fees, no per-task billing, no vendor lock-in. Most agency deals trap you in rented stacks. We never do.
02 · Governance
Every action the AI takes is logged, signed, and provable. Approval mode, a kill switch, a full audit trail — so you, your customer, or a regulator can see exactly how any decision was made.
03 · Foundations
We deploy on enterprise-grade foundations thousands of companies already run, then add the integration and brand layer your business needs — not a fragile demo held together with prompts.
04 · Cost
We don’t bill you per AI call. Use as much as your business needs — we engineer the system to run close to zero, so you never get a surprise bill.
05 · Direct
Roman replies personally within one business day. No account-manager layer, no rotating juniors — the engineer who scopes your project is the one who builds it.
// Evidence
Revenue OS is live and working today; Approvals OS is in build. The full picture — what each one does and what it proves — lives on the Solutions page.
Our software
Revenue OS live on real businesses, and Approvals OS in build — each one honestly framed on a single page.
See the software →// How we work
A short, written engagement. You describe the problem you want solved. We design the architecture, engineer the system, hand it over. You sign off at three points — the rest is delivery.
// Questions
Two things: Revenue OS — our flagship AI revenue agent that turns a business’s leads into booked calls, 24/7 — and custom software to order: apps, tools, portals, and agents, engineered from scratch and owned by you on day one.
Completely. Every line is yours, deployed to your own accounts, on day one. No vendor lock, no per-seat fees. Take it in-house or keep us on a retainer — your call, because it’s your asset.
You stay in control. Approval mode lets you sign off on what it sends, there’s a kill switch, and every action is logged and provable. It runs inside the guardrails you set — never off on its own.
Revenue OS is a ready product you switch on to work your leads — free trial first, then you only pay on results. Custom software is anything else we build to order for your business: fixed-scope, written quote, owned by you.
Revenue OS can be live on a free trial in minutes. Custom builds are fixed-scope with a written quote inside one business day of a call — no open-ended hourly billing.
// Start a conversation
One short form. Pick the surfaces you care about, give us a sentence or two on the operation, and we’ll design the software around it. We follow up within 24 hours. Prefer to skip the form? Book a 30-minute call instead — same path.