Beta — 50% off for lifelimited seats
AI contract review · built on your playbook

Redline like the
senior partner
you trained it to be.

AI contract review that comes back in your voice, with your fallbacks and positions you’ve already won — as native Word tracked changes. Your .docx never leaves the browser.

Built on Claude Opus 4.6Browser-local parsingAnthropic ZDRABA 1.6(c) aligned
Generic AI vs. grounded AI

Most AI guesses at
what “good” looks like.
Yours already knows.

Harvey and Spellbook learn from everyone’s contracts. BarZero learns from yours — your fallbacks, your carve-outs, your walk-aways. Every redline cites the playbook entry that drove it.

Before · counterparty draft
tap to redline

9.2 Limitation of Liability

In no event shall the Provider’s aggregate liability exceed one hundred U.S. dollars ($100), regardless of the theory of liability.

B
Playbook §4.1 — Liability Cap
Your firm’s fallback is “12 months of fees” on mid-market SaaS deals. I swapped the dollar cap out and flagged it on the cover sheet.
One playbook. Four jobs.

One set of positions.
Infinite contracts.

Your playbook is the center of gravity. Review, draft, batch, and track — every feature runs on the same positions you’ve already won.

Review

Drop a .docx. Get redlined.

Tracked changes against your fallbacks in about a minute. Accept, reject, export — all native Word revisions.

Draft

Describe it. Claude writes it.

MSAs, NDAs, SOWs, DPAs — streamed into the editor in your language, with your preferred positions baked in.

Batch

Twenty contracts, one pass.

Point at a folder, Drive, or SharePoint. Each reviewed on the same zero-retention path. Output ranked red/amber/clean.

Track

Contracts don't vanish after signing.

Matters, obligations, renewals, conflicts — the post-signature work lives in the same workspace as the pre-signature work.

The quiet part

This only works because
nothing leaves.

Grounded AI needs your playbook. Your playbook is your edge. So the .docxparses in your browser, only the clause you’re reviewing is relayed under Anthropic ZDR, and nothing persists. Privacy is the foundation, not the pitch.

Zero Trust

Your browser does the work.

Your .docx is parsed locally — text, tracked changes, defined terms, everything. The file itself never leaves.

Zero Knowledge

We can't look at your data.

Only extracted clause text reaches the model, relayed under Anthropic ZDR. No indexing, no training, no replay.

Zero Retention

Nothing sticks anywhere.

When the tab closes the session is gone. No server logs, no vendor cache, no compliance ticking clock.

Three steps

Drop it in. Redlined in 47 seconds.

01

Drop it in

Drag a Word doc onto the editor — or describe what you need in plain English. Opens in your browser, never uploaded as a file.

02

Claude redlines it

Against your playbook — your fallbacks, your language, your risk tolerance. Not generic model advice. Every suggestion is grounded in a clause you saved.

03

Accept, reject, export

Tracked changes land clause-by-clause. Click to accept, flick to reject. Export the redlined .docx — or send it back as a fresh draft.

The other guys

Everyone else sells
a model. We ship your model.

Harvey
Spellbook
BarZero
Learns your negotiation style
Grounds in your playbook
partial
Uploads full .docx
Sees your metadata
Retains clause text
varies
Starts < $50/mo

The part lawyers always ask about.

Is this actually private, or 'privacy-y'?
Your file never leaves the browser. Only the clause text you're actively reviewing is relayed, and Anthropic's Zero Data Retention agreement means it's discarded after the response. No server-side logs, no training.
What if I don't have a playbook yet?
Most firms don't — we'll help you build one in about 15 minutes from the last five contracts you negotiated. Or start with one of our pre-built templates and edit from there.
Does it do tracked changes or just comments?
Native Word tracked changes. Redlines come back as insert/delete revisions the editor handles as real w:ins and w:del nodes — accept or reject in Word exactly as you'd expect.
How much is it?
$39/mo during beta on the Zen tier (50% off, locked for life). Team plans from $99/mo on Ensemble. Full pricing breakdown on the pricing page.
Beta — 50% off for life

You’ve already won
these arguments.
Now your AI has too.

15 minutes from signup to your first grounded redline. We’ll build it with you from the last five contracts you negotiated.

Your model, not theirs. Browser-local · ZDR · Zero retention.