Context Design Co

Your business,
out of your head.

We build private AI brains for South African businesses — a system your company owns that knows your files, emails and history, and answers in plain English. Look at our Showcases →

20 minutes · plain questions · ends with your business mapped + a booked call  ·  or read the asset case

Context Design Co lockup in polished copper and navy
In production Attesté Practacular BlitzBox

A veteran retires, and thirty years of "how we actually do it" retires with him. The new hire asks the question the last one asked, and someone answers it from memory — again. Month-end waits on the one person who knows. Every business runs on answers like these. Ours did too — so we built systems that hold them. Now we build them for businesses like yours.

The gap

The answer that walks out the door.

AI has read the whole internet. It has never read you.

That's why it's been impressive everywhere except inside your business: your project files, your pricing history, your customer conversations, the judgment your best people carry — none of it is anywhere an AI can use it.

Until someone writes the business down, the smartest model in the world starts every day as your newest hire.

How it works

Three steps, yours at every one.

From “it’s all in our heads” to a business that answers for itself.

The CDC lockup exploded into its three layers: navy core, copper rails, nameplate
Navy core

Twenty minutes of plain questions

The diagnostic. You talk, we map — who knows what, where the money comes from, what breaks when someone's on leave. You watch your business get written down, live.

Copper rails

We build your business its own AI brain

It reads in what you already have — files, emails, records, history — and lives on hardware you control. Yours from day one. We never hold your data. Works with Claude, GPT, Gemini — any AI, no lock-in.

Nameplate

It answers, and it does the work

Ask it anything in plain English; every answer shows where it came from. It drafts the follow-up, chases the invoice, writes the post — and nothing goes out without your signature.

Reassembled

Together, it's simply your business, running.

We call this system a Substrate. You'll mostly call it by what it does. The diagnostic maps which parts you already have and which we build.

Begin the diagnostic

In production

Three businesses we actually run.

We don't ask you to take any of this on faith — we run our own companies on it. The three we've shipped, all in production, are deliberately different. Attesté runs a software company end-to-end with one person keeping watch. Practacular multiplies the productivity of an accounting practice. BlitzBox is the productized version: one business per box, with everything on a Mac Mini at your premises. Same underlying pattern. Different trades.

Attesté · the system handles

  • Marketing campaigns
  • Sales outreach & sequences
  • Financial reconciliation
  • Customer support
  • Founder calendar & follow-ups

Practacular · the system handles

  • Tax review workflows
  • Compliance lookups
  • Client engagement records
  • Workpaper preparation
  • Whole-practice, ask-anything search

BlitzBox · the system ships as

  • Mac Mini on your premises
  • Modules: Brain · Financial · Email · Compliance
  • Credentials we rotate for you, remotely
  • Stays on your premises · POPIA-safe
  • Tiered hardware, from a Mac Mini up to serious dedicated hardware
Showcase A · One operator, one AI

One operator, one AI, one company.

Attesté is an art collection management platform. The product runs publicly at atteste.art. Less visible: the company behind it operates as a single human and an AI agent. Marketing campaigns, sales sequences, financial reconciliation, customer support, all handled day-to-day by Claude, working from a system that captured the entire business.

The operator's role is compliance, judgement calls, and the things that genuinely require a human signature. The work that doesn't is delegated to the system. This is what becomes possible when AI gets proper access to a business's knowledge: an operating model that runs every day.

Visit atteste.art → Read the write-up →
command-centre / video-studio
Attesté Command Centre Video Studio: the audience and topic settings, cost estimate, and the four approval steps ending in final human approval
Showcase B · Practice multiplier

A whole accounting practice you can ask in plain English.

Practacular is AI practice management for South African accounting firms. Live in production. The whole practice is written down and connected — tax reviews, compliance workflows, client engagements — so every accountant can ask it in plain English and get an answer with its source.

Tax review cycles compress. Compliance lookups stop being manual. The practice operates at higher leverage because its accumulated knowledge becomes instantly accessible to every accountant, on every engagement, in every conversation with a client.

Visit practacular.com → Read the write-up →
practacular / firm-brain · graph
Showcase C · Same system, in a box

The whole system, in a Mac Mini you can hold.

BlitzBox is the boxed version of what we do for bespoke clients: the box is yours alone, and everything stays on your premises. It ships as an AI system on a custom-finished Apple Mac Mini. Brain, Financial, Email, and Compliance modules always on. Nothing leaves the building.

Configure it to your practice: hardware tier (from a Mac Mini to an NVIDIA DGX Spark), the modules that do work for you, and the embedded support you want. Then reserve a commissioning slot with a refundable EFT deposit. Charl personally provisions each Box at our Cape Town master station before it ships.

See BlitzBox → View pricing →
BlitzBox with both BLITZBOX and Context Design Co faces visible, the productized system

The asset

It ends with something you own.

Consulting ends in a slide deck. This ends in an asset: the system, the code, and the record of how your business actually runs — licensed to you, on your hardware, itemised on a handover list. Your accountant can put it on the balance sheet. One day, a buyer can pay for it.

The full case, written for your auditor →

Principles

How we work

Four principles. They're load-bearing. Every engagement we take on passes through them.

The system is the product

We don't sell the AI. We build the system that makes AI useful to you specifically — and you own it.

Model-agnostic by design

Use Claude. Use GPT. Use Gemini. Use whatever ships next. We won't lock you to any one vendor — we run several ourselves.

Owned by you

The code is MIT-licensed to you from minute one. Self-hosted on hardware you control. We never hold your data. If you stop working with us, you keep everything.

Humans where they matter

Every action is on the record. Every draft waits for your signature. The system refuses to type passwords. We never auto-send.

Operator

Who

Context Design Co operates under Yield SPM (Pty) Ltd, a South African studio building AI-multiplied businesses. Attesté and Practacular are our own; BlitzBox is the same system, boxed.

We use the same patterns we sell. The discipline you see on this page didn't come from a whiteboard; it came from running our own businesses on it.

Operating across Cape Town · Stellenbosch · Bloemfontein · Johannesburg

Engagement

Get in touch

For owners wondering whether this would fit their business — or ready to commission their own. We work case by case, slowly, with a small number of clients at a time.

info@contextdesign.tech
Cape Town · Stellenbosch · Bloemfontein · Johannesburg · Replies within 48 hours