unreal-api-mcp

Overview

The unreal-api-mcp server is a specialized tool that gives AI agents access to comprehensive Unreal Engine C++ API documentation. It works by querying a version-specific SQLite database containing all Engine Runtime, Editor, modules, and built-in plugins. The server automatically detects the appropriate UE version based on environment variables or project files, downloads the necessary database on first run, and provides fast lookups (<1ms for exact matches, <5ms for searches). This prevents common issues like hallucinated signatures, wrong #include paths, and deprecated API usage.

Try asking AI

After installing, here are 4 things you can ask your AI assistant:

• search_unreal_api

  Find Unreal Engine APIs by keyword

  Try:Search for character movement functionsTry:Find spawn actor related APIs
• get_function_signature

  Get exact function signature with parameters and return type

  Try:Get the signature for AActor::GetActorLocationTry:What parameters does UGameplayStatics::SpawnActor take?
• get_include_path

  Resolve the #include path for a given Unreal type

  Try:What's the include for ACharacter?Try:Get the include path for USceneComponent
• get_class_reference

  Get full class reference with all members

  Try:Show me all members of UCharacterMovementComponentTry:Get reference for UK2Node_SpawnActorFromClass
• get_deprecation_warnings

  Check if an API is deprecated and get alternatives

  Try:Is K2_AttachRootComponentTo deprecated?Try:Check if any function in my code is obsolete

Comparable tools

Installation

{
  "mcpServers": {
    "unreal-api": {
      "command": "uvx",
      "args": ["unreal-api-mcp"],
      "env": {
        "UNREAL_VERSION": "5.5"
      }
    }
  }
}

pip install unreal-api-mcp

{
  "mcpServers": {
    "unreal-api": {
      "command": "unreal-api-mcp",
      "args": [],
      "env": {
        "UNREAL_VERSION": "5.5"
      }
    }
  }
}

FAQ

What versions of Unreal Engine are supported?

See the supported versions on the [db-v1 release page](https://github.com/Codeturion/unreal-api-mcp/releases/tag/db-v1). New versions are automatically built weekly.

Does it require Unreal Engine to be installed?

No. The MCP server uses pre-built databases and doesn't require a full Unreal Engine installation.

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