pattern_grid

THE RISK

Low Risk

Why pattern_grid needs a policy

With an empty description and only the name 'pattern_grid' to go on, it's unclear what this tool does. Given the context of UEFN (Unreal Editor for Fortnite), it likely relates to arranging actors or assets in a grid pattern, which would be a Write operation. However, without any description, confidence is very low and I cannot reliably categorize it beyond 'Other'.

From the tool's definition Tool name is 'pattern_grid' with an empty description. No information is available about what this tool does.

Documented attack patterns abuse exactly the kind of access pattern_grid gives an agent:

POLICY

How to control pattern_grid

PolicyLayer is an MCP gateway — it sits between your AI agents and Uefn, and nothing reaches the server without passing your rules. This is the rule we recommend for pattern_grid:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "pattern_grid": {
      "limits": [
        {
          "counter": "pattern_grid_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

pattern_grid gets a rate cap, and everything else on the server is denied unless you say otherwise.

Create a free account and register Uefn — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

SET A RULE FOR THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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All 143 Uefn tools →

Other tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Tool risk categories → How PolicyLayer classifies MCP tools by what they can do.
MCP tool → What an MCP tool is and how clients discover and call it.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about pattern_grid

What does the pattern_grid tool do? +

pattern_grid. It is categorised as a Other tool in the Uefn MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on pattern_grid? +

Register the Uefn MCP server in PolicyLayer and add a rule for pattern_grid: 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 pattern_grid? +

pattern_grid is a Other tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit pattern_grid? +

Yes. Add a rate_limit block to the pattern_grid 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 pattern_grid completely? +

Set action: deny in the PolicyLayer policy for pattern_grid. 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 pattern_grid? +

pattern_grid 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.

Enforce policy on every Uefn tool call.

Start from Uefn, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →