enable_plugin
Enable a plugin in the .uproject file. Requires editor restart to take effect.
This record as markdown: /tools/jjpxdev-unreal-mcp/enable-plugin.md
What enable_plugin does on Unreal
AI agents use enable_plugin to create or update resources in Unreal, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Unreal environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
plugin_name | string | Yes | Plugin name to enable |
Parameters from the server's own tool schema.
Why enable_plugin is rated Medium
This tool modifies the .uproject configuration file to enable a plugin. While technically reversible (the plugin can be disabled again), enabling an untrusted or malicious plugin could have serious security implications. It doesn't delete data, but it does persistently modify project configuration and could introduce new attack surfaces or functionality.
From the tool's definition 'Enable a plugin in the .uproject file' — modifies the project configuration file to activate a plugin
Attacks that exploit this kind of access
The rule that runs enable_plugin safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Unreal, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For enable_plugin, this is the rule to start with:
enable_plugin stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Unreal, apply this rule, and every enable_plugin call is checked against it from then on.
Questions about enable_plugin
Enable a plugin in the .uproject file. Requires editor restart to take effect. It is categorised as a Write tool in the Unreal MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
enable_plugin accepts 1 parameter: plugin_name. Required: plugin_name. The full parameter table on this page comes from the server's own tool schema.
Register the Unreal MCP server in PolicyLayer and add a rule for enable_plugin: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Unreal. Nothing to install.
enable_plugin is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the enable_plugin rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for enable_plugin. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
enable_plugin is provided by the Unreal MCP server (@jjpxdev/unreal-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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