unreal-engine-mcp

by ChiR24·io.github.ChiR24/unreal-engine-mcp·v0.6.0-beta-a

MCP server for Unreal Engine 5 with 23 tools for game development automation.

A85/100grade A

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Safety scan

A85/100

Adoption

Established

876 stars225 downloads/wk

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Nobody has reviewed unreal-engine-mcp yet.

If you have run it, two minutes of your experience saves the next person an afternoon.

Tool lists for local packages are only visible after install.

scanner v0.1.3 · 2026-09-19 · same rubric, same numbers if you re-run it

1 medium

Code scan1337 source files scanned20/25
–Live reliabilityno gateway calls yet and no remote to proben/a
–Tool poisoningtools not inspected (local package is not executed); not countedn/a
Auth qualitylocal package, no credentials required12/15
Maintenancelast push 1 days ago15/15
Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10

mediumeval / new Function usedexec.eval

dist/utils/commands/console-command-policy-fixture.d.ts: …alent-block-31"; readonly command: "eval("; readonly bucket: "equivalent-bloc…

Overall 85/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

Runs npx -y unreal-engine-mcp-server on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add unreal-engine-mcp -- npx -y unreal-engine-mcp-server

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Local package. It runs on your machine, not through the gateway.

LOG_LEVELLogging level: debug, info, warn, error (default: info)
MCP_ROUTE_STDOUT_LOGSRoute standard output to standard error to avoid protocol corruption (default: true)
UE_PROJECT_PATHAbsolute path to your Unreal .uproject file
UE_EDITOR_EXEPath to UnrealEditor-Cmd.exe (optional)
UE_SCREENSHOT_DIRDirectory to save screenshots (optional)
MCP_AUTOMATION_PORTAutomation bridge WebSocket port (default: 8091)
MCP_AUTOMATION_HOSTAutomation bridge WebSocket host (default: 127.0.0.1). Set to 0.0.0.0 for LAN access (requires MCP_AUTOMATION_ALLOW_NON_LOOPBACK=true)
MCP_AUTOMATION_ALLOW_NON_LOOPBACKSECURITY: Allow binding to non-loopback addresses (e.g., 0.0.0.0) for LAN access. Only enable if you understand the security implications. (default: false)
MCP_AUTOMATION_CLIENT_MODERun as client connecting to UE (false) or server listening for UE (true) (default: false)
MCP_AUTOMATION_USE_TLSUse wss:// for the automation bridge client connection (default: false)
MCP_CONNECTION_TIMEOUT_MSConnection timeout in milliseconds (default: 5000)
MCP_REQUEST_TIMEOUT_MSRequest timeout in milliseconds (default: 30000)
MCP_AUTOMATION_MAX_MESSAGES_PER_MINUTEMax inbound automation bridge messages per minute before disconnect (default: 600)
MCP_AUTOMATION_MAX_AUTOMATION_REQUESTS_PER_MINUTEMax inbound automation request messages per minute before disconnect (default: 120)

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