device_call_method

A execute tool on the Uefn MCP server.

SERVERUefn SOURCEquangdang46/uefn-verse-mcp

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/quangdang46-uefn-verse-mcp/device-call-method.md

WHAT IT DOES

What device_call_method does on Uefn

AI agents invoke device_call_method to trigger actions in Uefn. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why device_call_method is rated High

The name 'device_call_method' strongly suggests executing a method/function call on a device object in the live UEFN editor. Method calls can trigger arbitrary operations in the editor, including state changes, side effects, or destructive actions.

From the tool's definition Tool name 'device_call_method' implies invoking a method on a device within the UEFN editor environment.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs device_call_method safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Uefn, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For device_call_method, this is the rule to start with:

device_call_method Rate-limited

device_call_method stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "device_call_method": {
      "limits": [
        {
          "counter": "device_call_method_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Uefn, apply this rule, and every device_call_method call is checked against it from then on.

FAQ

Questions about device_call_method

What does the device_call_method tool do? +

device_call_method is a execute tool on the Uefn MCP server. It is categorised as a Execute tool in the Uefn MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on device_call_method? +

Register the Uefn MCP server in PolicyLayer and add a rule for device_call_method: 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 Uefn. Nothing to install.

What risk level is device_call_method? +

device_call_method is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit device_call_method? +

Yes. Add a rate_limit block to the device_call_method 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.

How do I block device_call_method completely? +

Set action: deny in the PolicyLayer policy for device_call_method. 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.

What MCP server provides device_call_method? +

device_call_method is provided by the Uefn MCP server (quangdang46/uefn-verse-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Uefn, and thousands of servers like it.

This server

All 143 Uefn tools → High-risk tools on this server →

Across the catalogue

adb_backup_device on Android Forensics ADB MCP Server →call_rpc on Frida Game Hacking MCP → All high-risk MCP tools → The MCP Attack Database →

Guides

Govern code and CI agents →Agent sandbox →Least privilege for MCP →