Arca
Product Word

Word, like you've never seen before.

Draft, redline, and review contracts inside Microsoft Word with AI that understands your standards, your playbooks, and your negotiation positions — so you can do work you are proud of at a pace once thought impossible.

Core features

Precision without pause.

Arca for Word gives lawyers AI-powered tools at the exact moment they need them — inside the document, not in a separate tab.

Draft with focus

Proofread, draft new clauses, highlight risk language, and access hundreds of saved prompts — without leaving the document you're working in.

Redline with speed

Review documents against your internal guidelines and generate tracked changes instantly. Arca produces precise redlines in Word — ready for negotiation.

Automated playbooks

Define your organization's standards, starting positions, red lines, and fallback language. Arca assesses every document against your playbook with cited reasoning.

Cite every source

Every suggestion, redline, and flag traces back to its source — your playbook, prior agreements, or legal precedent. Fully transparent, fully auditable.

Quick actions

Common tasks, one click away.

Arca's most-used actions are available directly in the Word toolbar — no prompting required.

Fill template

Populate clause placeholders from deal context and prior agreements.

Anonymize

Remove or replace identifying information from documents in one click.

Improve writing

Sharpen language for clarity, conciseness, and legal precision.

Translate

Translate documents into any language while preserving legal meaning.

Automated playbooks in Word

Your standards, applied automatically.

Define your rules

Set your organization's standards for any document type — NDAs, MSAs, service agreements, and more. Define starting positions, red lines, and acceptable fallbacks.

Arca reviews for you

Open any document and Arca runs your playbook against it automatically — flagging deviations, explaining why each flag matters, and suggesting precise redlines.

Cited reasoning every time

Every playbook finding links back to the rule that triggered it. Your team reviews with confidence — and auditors have a clear paper trail.