See how you actually build with AI. Then build better.

Minus9 is the discipline layer for AI-assisted work. It mirrors how you spend time, attention and tokens across Claude Code, Codex, Cursor and Antigravity — and turns that into prompts that get sharper as you do.

Join the waitlist Become a design partner
No credit card · your sessions stay on your machine until you choose otherwise.

Minus9 grows the patterns that return value and kills (−9) the ones that don’t — tightening your loop of value creation.

A guided tour · driven by AI
app.minus9.ai/you/home
This week · your 360 mirror
21.4hTime building
4.2MTokens
38Cycles
$163Spend
Where your attention went
collector
34%7.3h · $54 · 13 cyc 03100
Output score40
gateway
28%6.0h · $48 · 11 cyc 32141
Output score71
frontend
21%4.5h · $33 · 8 cyc 91224
Output score98
edge
17%3.6h · $28 · 6 cyc 8963
Output score99
Your patterns
The slide
Exploration slips into building with no decision point.
23Cycles
14.2hTime
1.21MTokens
$612Cost
The slide → the quiet finish · message mapping
As it usually goesThe slide
Let's improve the auth middleware.
Yeah, go ahead.
Wait — what were we building?
Steered towardThe quiet finish
Goal: add token refresh — nothing else.
Just the expired-token case first.
Looks right. Add a test, then done.
Walk the turns that change — same task, steered toward your best shape.
Minus9
Mirror agent
driving · reads your last 14 days
Reply to the agent…Navigate
Works with the tools you already use
More agents joining every month
What you get

One mirror. Three ways it pays off.

Connect your tools once. Minus9 reads each session locally and turns it into something you can act on.

Prompts tuned to your goals

Get prompt suggestions that already know your objectives and the patterns you’re trying to change — so the next session starts sharper than the last.

In development

A real 360 mirror

Time, tokens, cost and the patterns that dominate — plus what your prompts put to work: skills, tool calls, subagents and the harness behind each session. See where your attention actually went this week, not where you think it did.

For you and your team

Change sticks when it’s rewarded, not graded. Minus9 turns better habits into something you and your team can see, set goals against, and improve together.

Privacy, in plain terms

Your sessions never leave your machine — until you say so.

Minus9 runs a local hook on each connected tool. You choose what every connector shares, per app, and you can change it any time. We never sell your data, and we never train on it without consent.

Private · on-device

Counts and patterns only. No prompt or code ever leaves. Track goals over your patterns, fully offline.

Balanced

Metadata and redacted text. Enough to measure cost and cycles without storing what you wrote.

Rich context

Full prompts and outcomes. Unlocks named projects, cost-per-feature, and the sharpest prompt tuning.

Set the tier per connector. Privacy mode can still set goals — over your patterns, never your content.
Pricing & data plans

Start free. Go deeper when it’s worth it.

Your pay plan unlocks features; your data tier decides how much detail those features can show. You control both.

Plus

Free · during beta
The mirror for individuals getting started.
  • Time, tokens & pattern mirror
  • Goals over your patterns
  • Representative examples
  • Cost analytics
  • Turn-nudging
Join waitlist
Most popular

Pro

$24 /mo
Full financial picture and prompt tuning for serious builders.
  • Everything in Plus
  • Cost per project, feature & pattern
  • Open goals & deliverables
  • Turn-nudging via MCP
  • Your own session examples
Join waitlist

Teams

Custom
Shared goals and aggregate insight, never individual surveillance.
  • Everything in Pro
  • Team aggregates (never a person)
  • Shared goals & FinOps
  • SSO & admin controls
Talk to us
What each data tier shows
Private
Balanced
Rich
Time, tokens & patterns
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Cost & cycle measurement
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Named projects & features
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Goal-aware prompt tuning
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The vision

There’s a way people build value. We want to learn it with you.

The models are learning and evolving fast. So should the way we work with them. The best lever isn’t a better grade — it’s rewarding the change you actually want. Minus9 lets you and your team see that change, and grow into it.

Design partner program

We’re partnering with a small group of individuals and teams to shape Minus9 during this transformation. Early access, direct line to the team, and a say in where it goes.

Apply to partner See the console
Get early access

Join the waitlist.

Be first to mirror how you build — and help shape what comes next.

You’re on the list. We’ll be in touch.
By joining you agree to occasional product updates. No spam, ever.