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Server Configuration

Describes the environment variables required to run the server.

NameRequiredDescriptionDefault
UNREAL_MCP_HOSTNoServer URL for Custom mode (e.g. http://localhost:<port>)
UNREAL_MCP_TOKENNoAuth token for the server
UNREAL_MCP_TOOLSNoEnabled-tools override whitelist (comma-separated)
UNREAL_MCP_CLOUD_URLNoCloud backend URL (default https://ai-game.dev)https://ai-game.dev
UNREAL_MCP_LOG_LEVELNoLog verbosity
UNREAL_MCP_TRANSPORTNoTransport: 'stdio' or 'http'
UNREAL_MCP_AUTH_OPTIONNoAuth option: 'none' or 'required'
UNREAL_MCP_BRIDGE_PATHNoPath to sidecar binary
UNREAL_MCP_SERVER_PATHNoPath to local gamedev-mcp-server binary
UNREAL_MCP_START_SERVERNoStart server flag (not yet wired)
UNREAL_MCP_KEEP_CONNECTEDNoPersist/restore connected state
UNREAL_MCP_CONNECTION_MODENoConnection mode: 'Cloud' or 'Custom'. Defaults to 'Cloud'.Cloud

Capabilities

Server capabilities have not been inspected yet.

Tools

Functions exposed to the LLM to take actions

NameDescription

No tools

Prompts

Interactive templates invoked by user choice

NameDescription

No prompts

Resources

Contextual data attached and managed by the client

NameDescription

No resources

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