> For the complete documentation index, see [llms.txt](https://paytree.gitbook.io/api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://paytree.gitbook.io/api/readme.md).

# Introduction

The Paytree API follows a RESTful architecture. It features predictable, resource-based URLs, accepts request bodies, returns responses in JSON format, and utilizes standard HTTP response codes, authentication methods, and verbs.

### Jump right in

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-cover data-type="files"></th><th data-hidden></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Authentication</strong></td><td>Learn how to authenticate</td><td></td><td></td><td><a href="/api/authentication.md">Authentication</a></td></tr><tr><td><strong>Payment Intents</strong></td><td>Learn how to process payments</td><td></td><td></td><td><a href="/api/api-methods/payment-intents.md">Payment Intents</a></td></tr><tr><td><strong>Webhooks</strong></td><td>Learn how to listen to events</td><td></td><td></td><td><a href="/api/webhooks.md">Webhooks</a></td></tr></tbody></table>