Domains

AI Business OS

A domain is a folder under Domains/ for one function of your business, such as Finance or Marketing. Every piece of work in the workspace has one home, which is the domain whose function it serves. New workspaces have used domains since AI Business OS version 3.0.

The Seventeen Domains

Domains are numbered so they always sort in the same order. Each one comes with numbered reference subfolders that you can keep, rename or remove.

Domain	Reference subfolders
`01 Clients`	None. One folder per client instead
`02 Finance`	Accounts Payable, Accounts Receivable, Budgets, Reports, Tax & Compliance
`03 Human Resources`	Employee Records, Onboarding, Policies, Recruitment, Training
`04 Information Technology`	Architecture, Runbooks, Security, Software Development, Systems
`05 Strategy & Leadership`	Board, Decisions, OKRs, Strategy
`06 Sales`	Contracts, Pipeline, Proposals
`07 Marketing`	Analytics, Brand Assets, Campaigns, Content, Social Media
`08 Communications`	Crisis Playbooks, Internal Comms, Press, Stakeholders
`09 Customer Service`	Customer Success, Knowledge Base, Service Levels, Tickets
`10 Operations`	Logistics, Processes, Quality, Vendors & Suppliers
`11 Procurement`	Agreements, Policies, RFQs, Suppliers
`12 Property & Facilities`	Assets, Insurance, Leases, Maintenance
`13 Products`	Catalogue, Development, Pricing
`14 Research & Development`	Market Scans, Patents, Prototypes, Research Archive
`15 Education & Training`	Assessments, Courses, Curriculum, Learners
`16 Legal & Compliance`	Audits, Certifications, Contracts, Controls, Data Protection, Intellectual Property, Risk Register
`99 Cross-Domain`	None. Tracked projects only

What a Domain Holds

A domain holds two kinds of folder.

Kind	What it is for	Example
Reference subfolder	Standing material that is always current and never finishes, such as the supplier invoice process or this year’s budget	`02 Finance/02.3 Budgets/`
Tracked project	A body of work with an objective and an end, such as an audit, a campaign or a product launch	`02 Finance/P004 Year-End Audit/`

Reference subfolders are not tracked in your project register. Tracked projects are created with /newproject, which asks which domain the project belongs to and records the domain in .claude/state/state.json.

Domains/02 Finance/
├── CLAUDE.md
├── AGENTS.md
├── 02.1 Accounts Payable/
├── 02.2 Accounts Receivable/
├── 02.3 Budgets/
├── 02.4 Reports/
├── 02.5 Tax & Compliance/
└── P004 Year-End Audit/
    ├── CLAUDE.md
    ├── AGENTS.md
    └── PRD.md

Reference subfolders take the domain’s number with a decimal suffix, so the subfolders in 02 Finance are 02.1, 02.2 and so on. Project IDs run across the whole workspace, so the next project after P004 in Finance could be P005 in Marketing.

The Domain CLAUDE.md

Every domain has its own CLAUDE.md, which tells Claude what the domain is for, what each subfolder holds and any conventions to follow. Each one opens with a SETUP REQUIRED notice, and all except 99 Cross-Domain show the status “Unconfigured”. The first time you work in a domain, Claude asks you how you use it and updates the file with your answers.

Each domain CLAUDE.md belongs to you, so engine updates never overwrite one you have edited. The CLAUDE.md and AGENTS.md Files page explains how these files work together.

Adding and Removing Reference Subfolders

The default subfolders are suggestions. When you ask Claude to add one, Claude follows these steps.

Claude finds the highest number already used in the domain, for example 02.5.
Claude creates the new folder with the next number and a Title Case name, such as 02.6 Payroll.
Claude adds a row for the new folder to the subfolder table in the domain’s CLAUDE.md.

When you remove a subfolder, Claude removes its row from the table and leaves the other numbers as they are. Gaps in the numbering are fine.

Clients

01 Clients holds one folder per client, created with /newclient, and has no numbered reference subfolders.

Domains/01 Clients/
├── CLAUDE.md
├── AGENTS.md
├── _Templates/
└── Harbour-Dental/
    ├── README.md
    ├── Projects/
    ├── Communications/
    └── Reference/

Work you do for a client lives in that client’s folder, even when it spans several functions. The other domains are for your own organisation. If you run a marketing agency, a client’s campaign lives under 01 Clients/ and your own marketing lives under 07 Marketing/.

Keep 01 Clients even if you have no clients, because /newclient writes there.

Cross-Domain

99 Cross-Domain is for tracked projects that three or more domains own equally, where filing the project under one domain would suggest the wrong owner. A certification rollout that touches Operations, Human Resources, Legal and Finance belongs here. A marketing campaign with a small legal review does not, and belongs in Marketing.

Use this domain sparingly. If a clear owner emerges later, move the project folder into that domain and update the project’s path and domain in .claude/state/state.json. Ask Claude to make the change, because it backs up and validates the register when it writes.

The Sample Content

A new workspace ships with sample content so you can see how the pieces fit together.

Sample	Location
`P001 Website Redesign`	`Domains/04 Information Technology/`
`P002 Q2 Marketing Campaign`	`Domains/07 Marketing/`
`P003 Staff Training Programme`	`Domains/03 Human Resources/`
`Client-A`, `Client-B`, `Client-C`	`Domains/01 Clients/`

The three sample projects are registered in your project register with a note telling you to replace or archive them when you create your own projects. Archive them when you no longer need them, for example by asking for “archive P001” after running /status.

Domains You Do Not Need

If a domain does not fit your business, you have three choices.

Choice	How
Ignore it	Leave it empty. It does not get in the way
Repurpose it	Rename it to fit, for example `13 Products` to `13 Services`, and update its `CLAUDE.md`
Remove it	Delete the folder. Keep `01 Clients`, which `/newclient` needs

Engine updates never recreate a domain you have removed.