I Built an API That Reviews Legal Contracts in Seconds — Here's How It Works

#ai #api #automation #showdev

The Problem

Legal contract review is either expensive ($300-600/hour), slow (3-5 days), or skipped entirely. Most teams just sign and hope for the best.

I built LegalGuard AI — a REST API that analyzes contracts across 8 risk categories and generates PDF reports.

8 Risk Categories

#	Category	What Gets Flagged
1	Liability Caps	Damage limits that leave you exposed
2	Termination Rights	Unfavorable exit conditions
3	Jurisdiction	Litigation in inconvenient venues
4	IP Ownership	Who owns what you create
5	Indemnification	One-sided cost-bearing clauses
6	Confidentiality	Overly broad NDAs
7	Payment Terms	Hidden penalties
8	Auto-Renewal	Lock-in clauses you'll miss

Quick Start

import requests

headers = {
    "X-RapidAPI-Key": "YOUR_KEY",
    "X-RapidAPI-Host": "legalguard-ai.p.rapidapi.com"
}

with open("vendor_agreement.pdf", "rb") as f:
    resp = requests.post(
        "https://legalguard-ai.p.rapidapi.com/api/v1/analyze-risk",
        headers=headers,
        files={"file": f}
    )

result = resp.json()
for risk in result["risks"]:
    print(f"[{risk['severity'].upper()}] {risk['category']}")
    print(f"  Clause: {risk['clause'][:100]}...")
    print(f"  Why: {risk['explanation']}")

Smart Model Routing — You Don't Overpay

Document Size	AI Model	Credits
< 5K tokens	DeepSeek Chat	5
5K-50K tokens	Claude 3.5 Sonnet	50
> 50K tokens	Gemini Pro 1.5	100

Short NDA? 5 credits. 80-page MSA? 100 credits. Routing is automatic.

Compare Contract Versions

with open("v1.pdf", "rb") as a, open("v2.pdf", "rb") as b:
    resp = requests.post(
        "https://legalguard-ai.p.rapidapi.com/api/v1/compare-text",
        headers=headers,
        files={"file_a": a, "file_b": b}
    )
print(resp.json()["ai_summary"])

How It Compares

	LegalGuard AI	Lawyer	Enterprise Legal Tech
Cost per contract	$0.01-$0.20	$300-$2,000+	$50-200/seat/mo
Turnaround	10-30 seconds	3-5 days	Minutes
Integrates into code	Yes (REST)	No	Sometimes

When NOT to Use

M&A over $1M — Pay a lawyer
Non-English contracts — Best with English
Legal advice — This flags risks, doesn't negotiate

Think of it as the first pass that catches 80% of issues in seconds, so your lawyer can focus on the 20% that needs human judgment.

LegalGuard AI on RapidAPI — Free: 500 credits (~100 short contract analyses).

Building contract management features? Let me know what you're working on!

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