Introduction
Flint is a hosted checkout and payment platform. Send buyers to Flint checkout, receive signed webhooks when they pay, and fulfill orders on your server.
How Flint works
Flint handles payment collection (crypto and card) on a hosted checkout page. You create products, share checkout links or call the checkout API, and configure a webhook endpoint for fulfillment.
- Buyers never need a Flint account.
- You do not choose payment method in your API — the buyer picks on checkout.
- Fulfillment is webhook-driven — configure endpoints in Developer.
What you need
- A Flint seller account
- At least one product
- A webhook URL on your server (HTTPS in production)
Support
Questions about integration or your account? Email [email protected] or visit the Support page for live chat.
Dashboard vs docs
Use Developer in your dashboard to manage API keys and webhook endpoints. Use these docs for integration reference and examples.