When automating Copilot Studio agents or building custom integrations, you need to grant your Entra ID app registration the proper Power Platform API permissions. However, the Power Platform API often doesn’t appear in the standard API permissions list in the Azure Portal. This guide shows you how to enable the Power Platform API service principal and add the CopilotStudio.Copilot.Invoke permission to your app registration. Table of Contents The Problem Why Power Platform API is Missing Prerequisites Solution Overview Step 1: Verify Power Platform API Status Step 2: Enable Power Platform API Service Principal Step 3: Add API Permissions to Your App Step 4: Grant Admin Consent Alternative: Manual Manifest Configuration Verification Conclusion References The Problem While setting up automated testing for Copilot Studio agents using the Copilot Studio Kit (inspired by Matthew Devaney’s excellent video Copilot Studio Test Automation: STOP Testing Manually!