list_input_keys
List available FKey values (keyboard, mouse, gamepad keys).
This record as markdown: /tools/aadeshrao123-unreal-mcp/list-input-keys.md
What list_input_keys does on Unreal-MCP
AI agents call list_input_keys to retrieve information from Unreal-MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why list_input_keys is rated Low
This tool performs a read-only query of available input key constants in Unreal Engine. It retrieves enumerated values for keyboard, mouse, and gamepad keys—information that is static and already known to the engine. There are no side effects, no data modification, no code execution triggered by the tool itself, and no destructive or financial implications. This is a straightforward information lookup operation.
From the tool's definition Tool name 'list_input_keys' and description 'List available FKey values (keyboard, mouse, gamepad keys)' indicate a retrieval operation that queries available input key definitions without modifying any engine state or data.
Attacks that exploit this kind of access
The rule that runs list_input_keys safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Unreal-MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_input_keys, this is the rule to start with:
list_input_keys is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Unreal-MCP, apply this rule, and every list_input_keys call is checked against it from then on.
Questions about list_input_keys
List available FKey values (keyboard, mouse, gamepad keys). It is categorised as a Read tool in the Unreal-MCP MCP Server, which means it retrieves data without modifying state.
Register the Unreal MCP server in PolicyLayer and add a rule for list_input_keys: 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-MCP. Nothing to install.
list_input_keys is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_input_keys 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 list_input_keys. 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.
list_input_keys is provided by the Unreal MCP server (aadeshrao123/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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