A demo full-stack application combining a React front-end with an Express.js back-end. Integrates Knot API for payment and card management, and uses mock Plaid transactions for demonstration.

• Create and manage Knot sessions (card switcher, transaction link)
• Webhook processing for card and payment events
• Credit limit adjustment based on risk score
• Mock Plaid integration for transaction data
• Responsive React UI with React Router and Chart.js

• Node.js (>=14) and npm
• Knot API account and credentials

1. Clone the repo:

   git clone https://github.com/your-org/flexpay-demo.git
   cd flexpay-demo

2. Install dependencies:

   npm install

3. Create a .env file in the root:

   REACT_APP_KNOT_API_KEY=your_knot_api_key
   REACT_APP_KNOT_CLIENT_ID=your_knot_client_id
   REACT_APP_KNOT_SECRET=your_knot_secret
   

4. Run in development mode (client on 3000, server on 3001):

   npm run dev

• npm start – start the React front-end (port 3000)
• npm run server – start the Express back-end (port 3001)
• npm run dev – start both front-end and back-end concurrently

Back-end (port 3001):

• GET /test
• POST /webhook/knot
• POST /api/create-knot-session
• POST /api/adjust-credit-limit

/flexpay-demo
├ server.js
├ package.json
├ .env
└ src/           # React front-end
   ├ index.js
   ├ App.js
   └ ...

## License
MIT