Epic Games announced today (Aug. 20) that the Unreal Model Context Protocol (MCP), which was introduced alongside the release of UE 5.8, is now supported in Unreal Editor for Fortnite (UEFN).

Through this integration, creators can directly connect various agentic coding tools, such as Claude Code and Cursor, to the editor, reducing complex development steps and significantly boosting build speeds. In the built-in MCP server environment, the agent handles writing and compiling 'Verse', the in-game programming language. When users command specific actions, the agent constructs code, checks compilation results, and fixes errors on its own.

This release version of MCP includes toolsets specifically crafted for UEFN, provided through the same Toolset Registry used for UE 5.8's Unreal MCP. However, not all toolsets available in UE 5.8 are compatible with UEFN, and Epic Games plans to continue adding more UEFN capabilities as it unifies development streams on the journey toward Unreal Engine 6.

The features available with UEFN Unreal MCP in this release are as follows.

■ Writing and Iterating on Verse Code

An agent connected via Unreal MCP can read, write, and compile Verse files in a project. By describing a desired mechanic, the agent writes the code, triggers compilation, and reports the results. It can also search across all Verse files, explain unfamiliar code, and continuously iterate on compilation errors until the build completes successfully. Verse file operations occur strictly within the project, ensuring the agent only works on the user's own files.

■ Adding and Editing Devices

Additionally, an MCP-connected agent can browse the device catalog, place Fortnite Creative or Verse devices in a level, and edit their properties. If you describe the desired outcome—for instance, asking, "Set off fireworks when someone crosses the finish line"—the agent selects and places a VFX spawner device, then configures effect and trigger settings that would normally require manual setup in the Details panel.

■ Creating and Editing Scene Graph Entities

When working with Scene Graph, agents can create entities, add components, and edit their transforms and properties. For example, you can enter a prompt like, 'Create an entity at the origin, add a mesh component, and move it 500 units up.' You can also ask the agent to index existing elements—such as listing all entities in the level and their components—which is useful when the user or agent needs to get oriented within a project.

■ Starting, Stopping, and Debugging Play Sessions

The agent can launch a play session, verify connection, and stop it once work is complete. In addition, if you make Verse changes mid-session, the agent can push just those Verse changes to the active session. Each workflow is designed to operate independently while staying interconnected: you can ask the agent to write Verse and link devices, start a session, and inspect logs to verify everything works properly. If a session fails to launch, you can ask the agent to inspect client logs, identify the cause, and resolve the issue.

Unreal MCP is built directly into UEFN, requiring no separate plugin installation. Users simply activate the UEFN MCP Toolset under Beta Access in Project Settings and connect their preferred agentic coding tool to the editor. Additionally, Epic Games Verse Evangelist Magnus Enebakk will demonstrate how it works in practice during a "Creating in Fortnite" livestream on August 22 at 3:00 AM KST.