spline_place_props

A write tool on the Uefn MCP server.

SERVERUefn SOURCEquangdang46/uefn-verse-mcp

Medium RISK CLASS

Category Write

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/spline-place-props.md

WHAT IT DOES

What spline_place_props does on Uefn

AI agents use spline_place_props to create or update resources in Uefn, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Uefn environment.

RISK

Why spline_place_props is rated Medium

Based on the name, this tool likely places (creates) prop actors along a spline path in the live Unreal Editor for Fortnite scene. Placing objects is a Write operation — it creates new data in the scene. Since descriptions are empty, confidence is reduced, but the sibling tools (actor_place, audio_place patterns) and the 'place' verb support the Write classification.

From the tool's definition Tool name 'spline_place_props' suggests placing props along a spline in the UEFN editor — a Write (create/modify) operation. Description is empty, lowering confidence.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs spline_place_props 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 spline_place_props, this is the rule to start with:

spline_place_props Rate-limited

spline_place_props 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "spline_place_props": {
      "limits": [
        {
          "counter": "spline_place_props_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about spline_place_props

What does the spline_place_props tool do? +

spline_place_props is a write tool on the Uefn MCP server. It is categorised as a Write tool in the Uefn MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on spline_place_props? +

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

spline_place_props is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit spline_place_props? +

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

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

spline_place_props 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.

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