monolith

Overview

Monolith is a comprehensive MCP server for Unreal Engine 5.7+ that provides read/write access to virtually all aspects of game development projects. It uses a namespace dispatch pattern to maintain a concise tool list while exposing extensive functionality across domains like Blueprints, Materials, Animation, Niagara VFX, UI, and the Gameplay Ability System. The server supports both Windows, macOS, and Linux platforms and requires zero Python dependencies.

Try asking AI

After installing, here are 5 things you can ask your AI assistant:

• monolith_discover

  Lists all available actions across namespaces

  Try:What tools are available in Monolith?Try:Show me all actions in the blueprint namespace
• blueprint_queryblueprint_query(action, params)

  Programmatic control of Blueprint assets

  Try:Create a new Blueprint class inheriting from ActorTry:Add a new variable to my character Blueprint
• material_querymaterial_query(action, params)

  Create and edit materials and material instances

  Try:Create a new PBR material with metallic workflowTry:Add a texture to my material's base color slot
• animation_queryanimation_query(action, params)

  Full animation pipeline control including sequences and blueprints

  Try:Create a new montage with two animation sectionsTry:Add a state to my Animation Blueprint state machine
• niagara_queryniagara_query(action, params)

  Niagara VFX system and emitter management

  Try:Create a new Niagara system with particle emissionTry:Add a renderer module to my existing system
• ui_queryui_query(action, params)

  Widget Blueprint and UI system manipulation

  Try:Create a new HUD widget with health barTry:Set up a menu with CommonUI components
• mesh_querymesh_query(action, params)

  Mesh manipulation, geometry operations, and level design

  Try:Generate procedural terrain with rivers and forestsTry:Create LOD levels for this mesh
• gas_querygas_query(action, params)

  Gameplay Ability System integration and management

  Try:Create a new gameplay ability with cooldownTry:Set up attribute set for player stats
• ai_queryai_query(action, params)

  AI tools for behavior trees, state trees, and navigation

  Try:Build a behavior tree for enemy patrol AITry:Configure EQS query for cover selection
• audio_queryaudio_query(action, params)

  Audio asset authoring including Sound Cues and MetaSounds

  Try:Create a sound cue with randomized playbackTry:Set up attenuation for my explosion sound
• editor_queryeditor_query(action, params)

  Editor workflow tools including builds and asset previews

  Try:Trigger a full UBT build and check for errorsTry:Capture a preview screenshot of this material
• project_queryproject_query(action, params)

  Project-wide asset search and metadata

  Try:Find all assets using this textureTry:Get metadata for the main character mesh

Comparable tools

Installation

{
  "mcpServers": {
    "monolith": {
      "command": "path/to/monolith.exe",
      "args": []
    }
  }
}

FAQ

Does Monolith support Python scripting?

No, Monolith has zero Python dependencies and operates entirely within the Unreal Editor's native C++ environment.

Can I use Monolith with MCP-compatible clients other than Claude Code and Cursor?

Yes, Monolith works with any MCP-compatible client as long as it can connect to the provided endpoint.

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