# Feezless | Document Payment Technology

> Official Feezless API documentation for developers and businesses. Learn how to integrate payment acceptance, automate payouts, access transaction statements, configure webhooks, and create hosted payment pages with step-by-step guides and API references.

- [How its working ?](https://knownledge.feezless.cloud/index.md): Explore Feezless payment solutions for API requests, payment links, product menus, POS checkout, memberships, and online invoice and bill payments.
- [True Pay-Per-Request Protocol](https://knownledge.feezless.cloud/solutions/pay-per-request/index.md): Make individual API requests or digital-service calls payable on demand instead of requiring subscriptions.
- [Checkout Cart](https://knownledge.feezless.cloud/solutions/checkout/index.md): Share a payment link through chat, social media, or your website and collect payments without building a product catalog.
- [Product Menu](https://knownledge.feezless.cloud/solutions/product-menu/index.md): Create an online product menu or storefront with integrated cart and checkout. Ideal for restaurants, cafes, and retail catalogs.
- [POS Cashier](https://knownledge.feezless.cloud/solutions/pos/index.md): Take in-person orders and payments from a phone or tablet. Track sales and keep inventory in sync without a dedicated checkout device.
- [Membership and loyalty](https://knownledge.feezless.cloud/solutions/membership/index.md): Enroll customers from their first payment, deliver digital membership cards, and let customers complete their own PIN setup and PDPA consent.
- [Invoice and bill payment](https://knownledge.feezless.cloud/solutions/invoice-bill-payment/index.md): Create invoices, send online payment links, and track paid and outstanding amounts in real time. No separate manual billing document needed.
- [ใบเสนอราคา (Quotation Template)](https://knownledge.feezless.cloud/untitled-page-2.md): แม่แบบใบเสนอราคา Feezless สำหรับคัดลอกและกรอกข้อมูลโครงการใหม่


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