I Built a Lawyer App in 30 Minutes. Here’s the Prompt.

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Every freelancer has been there.

A client sends over a contract. Six pages of dense legal language. You don’t want to pay $300 for a lawyer to review something that might not even close. So you skim it, hope for the best, and sign.

That’s how people get burned.

One weekend, instead of skimming, the contract went into Base44. Thirty minutes later, a working web app called ClauseCheck existed. Upload any contract, get back a plain-English summary, a list of risky clauses, and three questions to ask before signing.

No law degree. No developer. No API keys. Just Base44.

Here’s exactly how it was built — and how you can test it right now.

The One Tool You Need

Base44 is a no-code app builder where you describe what you want in plain English and it generates a real, working web app — file upload, UI, AI integration, the works. No terminal. No code. No deployment headaches.

Base44 has Claude built in. You don’t connect anything. You don’t touch an API key. You just describe your app and Base44 handles the AI layer for you.

That’s the part most people don’t realize. You don’t need to set up Claude separately. Base44 does it internally when you describe an AI-powered app.

The Problem — One Sentence

The original idea was too big: “an AI tool for legal documents.”

That is a category, not a product.

After minutes of thinking, it became one sentence:

A freelancer uploads a contract and gets back three things — a plain-English summary, flagged risky clauses, and questions to ask before signing.

That is a product. Small enough to build in a weekend. Useful enough that real people would use it.

This is the step most builders skip. The idea that ships is always smaller than the idea that started it.

The App — ClauseCheck

Name: ClauseCheck
Tagline: Know what you’re signing.
Built by: AI Entrepreneurs

Three screens. One job. Zero legal jargon.

• Screen 1 — Upload: Drop a PDF contract or paste the text directly
• Screen 2 — Loading: Base44’s AI reads and analyzes the document
• Screen 3 — Results: Three clean cards — summary, risks, questions

The Full Base44 Prompt — Paste This in One Go

Open Base44. Start a new project. Paste this entire prompt:

“Build a web app called ClauseCheck with the tagline ‘Know what you’re signing.’ and a footer credit ‘Built by AI Entrepreneurs’ on every screen.

Brand: Deep navy background (#0F1B2D), white text (#FFFFFF), electric teal accent (#00C2A8). Font: Inter throughout.

Screen 1 — Upload
Center-aligned. Show ‘ClauseCheck’ as a bold white text logo with a small teal checkmark icon to the left. Below: tagline in light grey. Below that: ‘BY AI ENTREPRENEURS’ in teal, uppercase, 11px, 2px letter spacing.

Large dashed upload zone: ‘Drop your contract here or click to upload’ with a PDF icon. Accept PDF only. Below the upload zone: a text link ‘Prefer to paste text? Click here’ that reveals a text area.

Full-width teal button ‘Analyze Contract →’ — disabled until a file or text is detected.

Soft yellow disclaimer banner at the bottom: ‘ClauseCheck is not a lawyer. This tool does not provide legal advice. Always consult a qualified legal professional before signing any contract.’

Footer: ‘Built by AI Entrepreneurs’ in grey (#6B7280), small, centered, 24px padding.

Screen 2 — Loading
Same navy background. ClauseCheck logo small at top. Animated teal progress bar in center. Rotating loading messages cycling every 2 seconds:
‘Reading your contract…’ / ‘Flagging risky clauses…’ / ‘Drafting your summary…’ / ‘Almost ready…’

Footer: ‘Built by AI Entrepreneurs’ in grey.

Screen 3 — Results
ClauseCheck logo top left. Top right: teal outlined button ‘Analyze Another Contract’ that resets the app. Three cards stacked vertically, 24px gap, white background, 16px rounded corners, subtle shadow, 24px internal padding:

Card 1 — teal document icon + bold header ‘What This Contract Says’ + AI-generated plain-English summary in dark grey (#1A1A1A), 16px, line height 1.6.

Card 2 — teal warning triangle icon + bold header ‘Watch Out For These’ + flagged risky clauses as bullet points, each with a small teal triangle icon. If none found: ‘No major red flags detected — but still read carefully.’

Card 3 — teal speech bubble icon + bold header ‘Ask These Before You Sign’ + exactly 3 numbered questions in dark grey, 12px spacing between them.

Below cards: full-width light grey box with italic centered text: ‘Note: This is not legal advice. ClauseCheck is an AI tool, not a lawyer. Consult a qualified legal professional before signing any contract.’

Teal button below: ‘Start Over →’ resets to Screen 1.

Footer: ‘Built by AI Entrepreneurs’ in grey.

All screens fully mobile responsive. Cards stack full width on mobile with 16px padding. Buttons full width on mobile.”

What the AI Analyzes — Under the Hood

Base44’s built-in AI is instructed to return three things every time a contract is uploaded:

📄 Plain-English Summary
3–5 sentences covering what the contract is, what each party agrees to, payment terms, duration, and key deadlines — in language anyone can understand.

⚠️ Risky Clauses to Review
Up to 5 flagged items. The AI looks specifically for:

• Clauses that limit one party’s liability unfairly
• Rights restrictions that kick in after the contract ends
• Unusual payment or late-fee terms
• Auto-renewal traps without clear notice
• Broad intellectual property assignment language
• Terms that allow one party to change the deal without notice

❓ Questions to Ask Before Signing
Exactly 3 questions — specific to the contract uploaded, not generic. Written in plain English so you can ask them to the other party or a lawyer without sounding lost.

Test It Yourself — Right Now

You do not need to build this from scratch.

👉 Try ClauseCheck here

Upload any contract — a freelance agreement, a lease, a vendor proposal, a job offer letter. See what comes back in under 60 seconds.

We tested it on a real SEC employment agreement. Here’s what came back:

📄 What This Contract Says

⚠️ Watch Out For These

❓ Ask These Before You Sign

Under 60 seconds. No lawyer. No API setup.

If you want to build your own version, paste the prompt above into Base44. The app generates in about 90 seconds — the rest is just testing and tweaking until it feels right.

What This Is Really About

The AI was not the hard part. Picking a small enough problem was.

Every time the scope expanded — add clause editing, add a comparison feature, add email export — the build stalled. The version that shipped was the version that said no to everything except the core three outputs.

Base44 with built-in AI removes the biggest barrier most non-developers face: the API setup, the deployment, the infrastructure. None of that exists here. You describe the app. It builds it. The AI is already inside.

Try It on These This Weekend

The same app works for any document:

• Freelance contracts — check payment terms and IP ownership
• Lease agreements — flag unusual landlord clauses
• Job offer letters — check non-compete and equity terms
• Vendor proposals — surface hidden fees and exit terms
• Terms of service — find what you’re actually agreeing to

Pick one document you’ve been putting off reviewing. Upload it. See what ClauseCheck finds.

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