Legal · Do this yourself

Review contracts with a strong model and redline with a cheaper subagent.

✅ A Reddit user: ~5x cheaper document handling

No X data

Based on A Reddit user on Reddit (opens in new tab)

Who it’s for

Lawyers, paralegals, compliance teams and people dealing with contracts. Not legal advice.

Adapt it to your industry

  • Freelancer: understand a client contract before signing
  • Small business: draft a first version of a simple policy for a lawyer to review
  • Real estate: summarize a lease in plain words

Step by step

  1. Remove names and private details from the document first.
  2. Open ChatGPT, Claude or Grok and paste the prompt below with the text.
  3. Ask for a plain-language summary, a list of risks and questions to ask.
  4. Check every point against the actual document; AI can miss or invent things.
  5. Have a qualified lawyer review anything important before you rely on it.
  6. Save the prompt as a checklist for the next document.

Ready-to-copy prompt

Review this contract against our playbook and list issues with clause references. Then ask the DOCX subagent to apply tracked changes and comments for each.

Start with AI

Opens the AI with this guide and the prompt filled in.

Open in ChatGPT (opens in new tab)Open in Claude (opens in new tab)Open in Grok (opens in new tab)
Cost
$0–20/month (free tiers or one AI plan)Our estimate
Time
2–6 weeksOur estimate

How to make money from it

Pricing idea: Law firms can offer fixed-fee reviews; tools usually sell per document or monthly plans.

Finding your first 10 customers

  • Show the workflow to colleagues in your firm or network.
  • Offer fixed-fee reviews to small businesses you know.
  • Write a short guide on the topic and share it on LinkedIn.

Ideas, not promises. Results vary.

Details: source, numbers and tags

What they did

The firm used Claude Cowork to review, redline and comment on .docx files with Opus at max effort, which was expensive. It now keeps Opus for legal review and routes all DOCX operations through a Sonnet subagent with a DOCX skill and MCP.

How it went

They report the docx interaction cost dropped about 5x.

Worth knowing

Keep the legal judgment on the strongest model and a lawyer in the loop.

Difficulty
AdvancedOur rating
Time to build
Not reportedOur estimate
Monthly cost
Not reported
Revenue
Not reportedWe only show revenue the source states
Result
Sourced: ~5x cheaper document handling
Engagement
No public countThe source shows no number
X buzz
No X data

Posted · Added Oct 16, 2026

Original builder recipe

  • Claude (Opus for review, Sonnet subagent for DOCX)
  • A DOCX MCP or skill
  1. Collect the documents.
  2. Have the agent extract and summarize.
  3. Have a qualified person review.
  4. Store the result securely.

Tags

Agent Claude
Role Lawyer
Industry Legal

Read the original

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