---
title: Action Extension API
description: The Action Extension API lets you [build action extensions](/docs/apps/build/admin/actions-blocks/build-admin-action) that merchants access from the **More actions** menu on details and index pages. Use this API to create workflows for processing resources, configuring settings, or integrating with external systems.
api_version: 2026-01
api_name: admin-extensions
source_url:
  html: https://shopify.dev/docs/api/admin-extensions/latest/api/target-apis/action-extension-api
  md: https://shopify.dev/docs/api/admin-extensions/latest/api/target-apis/action-extension-api.md
---

Action Extension API

Not supported in this version.