Give your AI a brain, not a prompt.
An OS brain is an orchestrator plus ten specialist sub-skills. You describe the situation in plain words - it picks the one specialist that fits, or runs several in sequence when the job needs them, and refuses to skip the steps that matter.
Drop the zip into any AI · Claude, ChatGPT, Gemini · yours to keep
"Client wants a website, mentioned 5k, there's no brief yet."
↓ routes to
02-scope-boundary → 03 → 04 → 05 → 06Gate held: no number until the scope is bounded. It asks four questions first.
"They came back and said my quote is too expensive."
↓ routes to
08-objection-and-discountGate held: no discount without a trade - and it checks your floor before conceding a penny.
"They've just asked for a fourth round of revisions."
↓ routes to
09-scope-creep-guardGate held: it sizes the extra and drafts the change note - collaborative, not legalistic.
You shouldn't have to know which file you need.
Buy a pack of skill files and you inherit a filing problem: ten documents, and you have to remember which one fits the moment. A brain removes that. You describe what's happening; it classifies the job, runs the one specialist that fits, and chains several together when the job spans stages.
You do the routing
- × You have to know which file fits before you start
- × Nothing connects - each file starts from cold
- × Nothing stops the AI skipping the step that mattered
- × Half of them go unused because you forgot they existed
It does the routing
- → You describe the situation in plain words
- → It picks the one specialist that fits - and says which it ran
- → Or chains several in order when the job spans stages
- → Gates stop it skipping ahead to the answer you wanted
One file that reads the room
A routing table maps what you said to the right specialist - one on its own for a contained job, or several chained in order when the job spans stages. It always names what it ran, so you can re-run a stage or take a different path.
Each built for one job
Every sub-skill carries its own workflow, guardrails, output format, and anti-patterns. Loaded only when the task calls for it, so the AI stays fast and focused.
It refuses to skip steps
The gates are the product. THE QUOTE won't give you a price before the scope is bounded, or a discount without a trade. Refusing to guess is what makes it trustworthy.
Works even pasted in
Uploaded as a zip it reads its own file tree. Pasted into a chat box it still routes from memory and tells you exactly which file to paste next. It never invents the contents.
Every brain runs a different engine.
The easy version of this product is one router pattern reskinned a dozen times. Ours aren't. Each brain is architected around the way its job actually works - a pricing brain gates, a negotiation brain argues against you, a study brain loops until you've got it. The engine is the selling point.
Won't proceed on missing inputs
Stages in a fixed order with hard gates between them. Used where skipping a step quietly ruins the outcome - like pricing without a floor.
Argues the other side
Runs the counterparty's strongest case against your position before you're in the room, then finds where you're actually exposed.
Questions you first
Refuses to write until it's extracted the specifics only you know. The cure for generic AI output is a brain that mines you for detail first.
Plays the other person
Builds the human on the other side of the table - buyer, boss, seller, interviewer - then puts you in the room with them before it counts for real.
14 brains. Every one a different engine.
Each one owns a job with real money or real stakes attached, and each is built on the engine that job needs. Every brain below is live today - plus THE ARCHITECT, which builds a custom brain for whatever job you do that isn't on this list.
THE ARCHITECT
Build a brain for your own job
None of them fit what you actually do? This one interviews you, picks the right engine, writes the orchestrator and every sub-skill, tests it, and packages a finished brain. Build as many as you like.
THE QUOTE
Freelancers · consultants · studios
Prices your work properly. Qualifies the lead, bounds the scope, sizes the effort, sets a floor you never cross, builds the quote, then defends it when they push back.
THE CLOSE
Anyone who sells
Role-plays your actual buyer - sceptical, busy, price-sensitive - so you meet the hard objection here first. Then builds the follow-up that gets a reply.
THE OFFER
Job hunters · career movers
Interviews you before it writes a word, so your CV carries your real achievements instead of the same phrasing everyone else's AI produced.
THE INTERVIEW
Anyone with an interview booked
Mines your real work into a bank of stories, builds the panel you'll actually face, prepares the question you're dreading, then puts you through it before it counts.
THE TABLE
Anyone negotiating
Argues the other side's best case against you, finds where you're exposed, and hands you your walk-away point and the trades to make before you concede.
THE LAUNCH
Founders · product & indie makers
Positioning, messaging, assets, sequence - in that order, and it won't let you write launch copy before the positioning holds up.
THE RAISE
Founders raising money
Runs your deck past several investor personas in parallel - the sceptic, the numbers one, the domain expert - then synthesises what to fix first.
THE BID
Tender · grant · RFP writers
Maps every stated requirement to your response, scores the coverage, and flags the mandatory you missed - the one that disqualifies you on page one.
THE TUTOR
Students · anyone learning hard things
Tests you, finds the weak spot, re-teaches it a different way, then tests again - and keeps a running map of what you haven't actually got yet.
THE DRAFT
Writers · newsletters · books
Grades every draft against a rubric you set - including your own voice - and rewrites until it clears the bar instead of stopping at draft one.
THE WEEK
Solo operators · small teams
Carries your operating context from week to week - what's open, what slipped, what's owed - so Monday doesn't start from a blank page every time.
THE CLAIM
Anyone owed money by a company
Refused refunds, denied insurance claims, withheld deposits, cancelled flights. Builds their defence first and tells you to drop it if your claim can't survive - then writes the letter that lands.
THE BUY
House · car · renovation · contractor
Argues the seller's side before it helps you buy, values the thing from comparables rather than their asking price, and holds your ceiling when the room gets warm.
THE TALK
The conversation you've been avoiding
Builds the other person - their version, their stake - then plays them in character so your first attempt isn't the real one. Boss, colleague, partner, parent.
Real jobs. Real outcomes.
Every review below comes from a verified buyer. No incentives, no ghostwriting. Just people who used the brain on real work and wrote what happened.
One free skill. $49 a brain. $199 to build your own.
Start with one free SKILL.md to see the standard. A brain is eleven of those files working as one system - an orchestrator plus ten specialists - which is a different thing entirely. And if none of them fits your job, THE ARCHITECT builds you one.
One SKILL.md - just ask · up to 20 a day
- ✓ One complete skill file, not a teaser
- ✓ Same authoring standard as the paid brains
- ✓ Shows you exactly what one file can do
- ✓ Works in Claude, ChatGPT, Gemini and agents
Per brain · orchestrator + 10 sub-skills
- ✓ The orchestrator, with its routing table and gates
- ✓ Ten specialist sub-skills, each built for one job
- ✓ An engine architected for that job specifically
- ✓ Install guide for chat, Projects, GPTs, Gems and agents
- ✓ Free updates · single-seat license for your work
THE ARCHITECT · unlimited custom brains
- ✓ Interviews you about the job you actually repeat
- ✓ Picks the engine, writes every file, tests the routing
- ✓ Build as many brains as you like - for you or your clients
- ✓ The full engine library included
Download. Drop in. Talk to it.
Download the brain
You get one zip - the orchestrator, its ten sub-skills, and a short install guide.
Drop it in
Upload the zip into a chat, or add the files to a Project, GPT, Gem, or your skills folder.
Describe your situation
Plain words - "they said it's too expensive". It picks the specialist and tells you which one it ran.
Questions, handled.
What actually is an OS brain?+
How is this different from a prompt pack?+
Does it work outside Claude?+
What makes them proprietary?+
What if none of them fits my job?+
Can I use it for client work?+
What's free, exactly?+
Stop prompting. Start delegating.
Take the free skill, drop it into whatever AI you already use, and give it a job you know well. Then look at what a brain does with eleven of them and a router on top.