# Shopify Functions ## What is Shopify Functions? Shopify Functions allows developers to create custom backend logic for Shopify stores, enabling advanced customizations and integrations. This feature supports the use of JavaScript, Rust, and WebAssembly, and includes tools for input/output handling, network access, testing, debugging, logging, monitoring, and error handling. Additionally, it provides guidance on localization practices to ensure functions work globally. {% embed url="" %} To learn more about Shopify Functions, visit [About Shopify Functions](https://shopify.dev/docs/apps/build/functions) --- # 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://support.functionjunctionapp.com/additional-resources/shopify-functions.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.