UE 5.8 primary sources

Verified against Epic Games documentation for Unreal Engine 5.8 on 2026-07-19.

• Scripting and Automating the Unreal Editor
• Scripting the Unreal Editor using Blueprints
• Editor Utility Widgets
• Scripted Actions
• Calling Blueprints in the Editor
• Running Blueprints at Editor Startup
• Scriptable Tools System
• Scripting the Unreal Editor Using Python
• Unreal Python 5.8 API
• Data Validation
• Automation Test Framework
• Run Automation Tests
• Functional Testing
• Asset Redirectors
• Unreal MCP
• Unreal Engine 5.8 Release Notes

Maturity labels recorded from Epic's 5.8 pages:

• Unreal MCP: Experimental.
• Python Editor scripting/API: Experimental.
• Editor Utility Widgets, Scripted Actions, Editor Scripting Utilities, startup Blueprint objects, and Scriptable Tools: Beta where their feature pages state it.