# Fundamentals - [Download Plugin](https://woo-docs.payaddons.com/fundamentals/download-plugin.md): Free to download plugin to getting start. - [Webhook Configuration](https://woo-docs.payaddons.com/fundamentals/webhook-configuration.md): Webhooks allow Stripe to send messages back to your WordPress site. Setting up webhooks is required for some delayed-notification payment methods such as SEPA and also refund feature. - [Auto-Tax Calculation](https://woo-docs.payaddons.com/fundamentals/auto-tax-calculation.md): Leverage Stripe Tax Calculation for WooCommerce Checkout (Only Stripe Hosted Checkout). - [Woo Subscription Integration (Pro)](https://woo-docs.payaddons.com/fundamentals/woo-subscription-integration-pro.md): Seamlessly integrate WooCommerce Subscriptions with Stripe's self-hosted checkout page for your subscription-based store. Supports a wide range of subscription features and payment methods. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://woo-docs.payaddons.com/fundamentals.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.