Flow action extensions now support relative paths for endpoint URLs

You can now use relative paths for endpoint URLs in your Flow action extension configuration . The runtime_url , validation_url , config_page_url , and config_page_preview_url properties accept either an absolute HTTPS URL, such as https://example.com/api/flow/actions/place-bid , or a relative path that starts with a single / , such as /api/flow/actions/place-bid . When you use a relative path, Shopify CLI resolves it against your development tunnel URL while shopify app dev is running, and against your app’s application_url after you deploy.