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Systems architecture lab

A complete architecture.
Ready to build.

99€ for the spec, before anyone writes code.

OverviewArchitectureBuild

High-level system architecture diagram

Full system architecture, ready to build from

Component and agent topology with responsibilities

Component and agent topology

Recommended tech stack with short rationale

Data models, flows, and boundaries

Data models / schemas / memory architecture

Security, observability, deployment notes

Key data flows

What is not included is written down

Security and guardrails considerations

What is not included is written down

The problem

You need the system on paper before anyone writes it.

Most people start with a model and a chat. Then an agent. Then a tool. Then a store. Nothing is specified as a whole. The builder, you or a coding agent, still has to invent the missing pieces. That is the problem we take.

Fragments, not systems

Disconnected agents, unnamed data flows, and prompts that only work in a chat window.

No path to implementation

A slide deck is not an architecture. If a builder still has to guess, the design is incomplete.

Scope that expands by accident

Without a written topology, every new tool becomes a new system. Cost and risk follow.

The solution

Complete means implementable.

A Focus9Lab architecture is the functional specification of the whole system: topology, responsibilities, data, flows, guardrails and deployment notes. Written so a capable builder can implement it. Prompts and code are not part of Architecture Only.

One topology

Every component and agent has a name, a job, and a boundary. The orchestrator is specified, not implied.

A path you can build

The architecture is complete enough to hand to Claude Code, Codex, Grok Build, or a human builder, without inventing the system.

Decisions, recorded

Short Architecture Decision Records so the next person knows why the system looks this way.

Packages

Two ways to work with us.

Start with the architecture. Add implementation only if you want it.

Fixed price

Architecture Only

99€

You receive the complete architecture. Nothing more. No prompts, no code.

  • Full system architecture, ready to build from
  • Component and agent topology
  • Data models, flows, and boundaries
  • Security, observability, deployment notes
  • What is not included is written down

Quoted from complexity

Full Build

Custom

We implement the architecture with you. Scope, timeline and price follow the system.

  • Everything in Architecture Only
  • Implementation of the specified system
  • Integration with your tools and data
  • Handover you can operate
  • Price agreed before work starts

Architecture Only, 99€

Exactly what you receive.

This is the product. The architecture of the system. Not prompts. Not code. Not implementation.

Included

  1. 01High-level system architecture diagram
  2. 02Component and agent topology with responsibilities
  3. 03Recommended tech stack with short rationale
  4. 04Data models / schemas / memory architecture
  5. 05Key data flows
  6. 06Security and guardrails considerations
  7. 07Observability and evaluation outline
  8. 08High-level deployment and scaling notes
  9. 09Short Architecture Decision Records
  10. 10A written list of what is out of scope

Not included

  • No prompts or agent instructions
  • No application code
  • No implementation or pairing
  • No hosting or infrastructure
  • No ongoing support or retainer

If you need the system built, that is Full Build, scoped and quoted separately.

How it works

A short, precise path.

  1. 01

    We ask

    What system, who uses it, what already exists, who will build it, and what 'it works' looks like.

  2. 02

    You choose

    Architecture Only is 99€. Full Build is quoted from complexity. The choice is explicit.

  3. 03

    We design

    We produce the architecture: topology, data, flows, guardrails, deployment notes. Not prompts. Not code.

  4. 04

    You receive it

    The blueprint is yours. You implement it with Claude Code, Codex or Grok Build, or we do, as Full Build.

  5. 05

    Optional build

    If you chose Full Build, we implement the specified system with you.

Illustrative cases

How the architecture is used.

Case 01

SaaS founder, multi-agent support

Problem
A solo founder with high support volume and a small team. Tickets stacked faster than people could answer.
Architecture delivered
Complete multi-agent system: intent routing, specialized agents, memory, escalation and observability. Architecture only. No prompts.
Outcome framing
The founder implemented the core system themselves in a short time, using the architecture as the source of truth.

Case 02

E-commerce operations

Problem
An online business running order processing and inventory by hand. Errors showed up late, and nothing was specified.
Architecture delivered
End-to-end agent architecture for orders, inventory, notifications and exception handling, with data flows and tool specs. Architecture only.
Outcome framing
The blueprint enabled a rapid self-build with Codex and Grok Build, without redesigning the system mid-implementation.

Illustrative examples based on common client scenarios. Results depend on the client’s execution.

Why Focus9Lab

A lab for systems, not a campaign.

Architecture before code

We do not start in the repository. The system is specified first so implementation does not invent it.

Written for 2026 builders

The architecture is complete enough to hand to Claude Code, Codex, Grok Build, or a human. Prompts are not included in Architecture Only.

Fixed Architecture Only price

99€. The deliverables are listed. The exclusions are listed. The price does not move with the conversation.

Clear exclusion

Architecture Only is the architecture. No code, no hosting, no retainer. Full Build is a separate engagement.

FAQ

Direct answers.

Next step

Start with the architecture.

99€ for a complete, ready-to-build system design. Or talk to us about implementing it.

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