CheckByAI

Your sponsor was revoked last night. Nobody told you.

CheckByAI is an AI-powered UK immigration compliance monitoring and document verification platform. Built in London.

🌐 Visit checkbyai.net →

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👤 Who Is This For?

Persona	Problem	How CheckByAI Helps
🧑‍💼 Visa Holders	Sponsor revoked without warning - you lose your visa	Real-time alerts before it's too late
🏢 HR Teams	Accidentally hiring from revoked sponsors = illegal	Instant licence status verification
📋 Immigration Advisers	Manual checks are slow and unreliable	Automated daily monitoring + forensic CoS checks
🤝 Recruiters	Placing candidates at non-compliant employers	Pre-screen sponsors before any placement

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🎯 What You Get in 30 Seconds

Feature	What It Does
🔍 Sponsor Licence Monitor	Daily scans of the UK Home Office Register of Licensed Sponsors. Alerts on removals, downgrades, new routes, and status changes.
🔎 CoS Check — PDF Forensics	Forensic analysis of Certificate of Sponsorship PDFs to detect tampering, fabricated metadata, suspicious modification dates, and invalid certificate generation.
⚡ Real-Time Alerts	Email, WhatsApp, and SMS notifications when licences are revoked or suspended.
📊 124,000+ Sponsors Tracked	Full coverage of the UK Home Office Register of Licensed Sponsors.

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🖥️ How It Works

1. Upload a CoS PDF  →  2. AI scans 6 data points  →  3. Get a risk score in seconds


1. Enter a sponsor name  →  2. CheckByAI scans the register  →  3. Get instant status + alerts

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💰 Pricing

Feature	Free	Starter	Pro	Unlimited	Enterprise
Sponsor Watches	1	2	5	Unlimited	Unlimited
Notifications	Daily digest	Email + WhatsApp	All + Immediate	All + Immediate	All + Webhooks
CoS Check MIS	—	—	✅	✅	✅
API Access	—	—	—	✅	✅

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🚀 Quick Start

Prerequisites

• Node.js 20+
• PostgreSQL 14+
• Redis (for BullMQ)
• Firecrawl API Key (optional)

Local Development

git clone https://github.com/Sam-Aitech/Checkbyai.net.git
cd Checkbyai.net
npm install
cp .env.example .env
npm run db:push
npm run db:migrate
npm run dev

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🛠️ Tech Stack

Layer	Technology	Purpose
Frontend	React 18, TypeScript, TailwindCSS, Radix UI, Three.js	Modern reactive UI
Backend	Node.js, Express, Drizzle ORM, PostgreSQL (Neon)	REST API + ORM
Queue	BullMQ, Redis	Background job processing
Auth	Passport.js	Secure authentication
Payments	Stripe	Subscription billing
Infrastructure	Cloudflare (Turnstile/CDN)	Security + CDN
Email	Resend / Brevo	Transactional emails
SMS	Twilio	SMS notifications

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📁 Project Structure

Checkbyai.net/
├── backend/          # Express API server
├── client/           # React frontend
├── server/           # Server entry point
├── shared/           # Shared types and utilities
├── migrations/       # Database migrations
├── scripts/          # Utility scripts
├── tests/            # Playwright E2E + unit tests
├── docs/             # Documentation
├── data/             # Seed data and archives
└── .github/          # CI/CD workflows

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📄 Documentation

Doc	Description
DEVELOPMENT.md	Local setup, architecture, running tests
DEPLOYMENT.md	Production deployment and scaling guide
API_REFERENCE.md	API endpoints, schemas, and examples
SYSTEM_DESIGN.md	Architecture and component design

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🛡️ Security

• AES-256-GCM encryption for phone numbers
• Email OTP authentication
• SQL injection prevention via Drizzle ORM
• File upload isolation with immediate deletion

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📅 Roadmap

Quarter	Milestone	Status
Q3 2026	CoS PDF forensic engine v2	✅ Done
Q3 2026	WhatsApp + SMS alert system	✅ Done
Q4 2026	API for enterprise partners	🔄 In Progress
Q4 2026	Mobile app (iOS/Android)	📋 Planned
Q4 2026	Multi-language support	📋 Planned

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🐛 Reporting Issues

• Security: Email security@checkbyai.net with description, reproduction steps, and impact.
• Bugs: Open a GitHub Issue with expected vs. actual behaviour and logs/screenshots.

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Built in London 🇬🇧

Made with ❤️ by Sam-Aitech

If CheckByAI has helped you - please ⭐ star this repo to help others find it.