set-instance-property

WRITES LIVE GAME STATE. Resolve a Luau expression to an Instance and assign one of its properties, returning

SERVERExecutor Mcp Roblox SOURCEokenjioxx/executor-mcp-roblox

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/executor-mcp-roblox/set-instance-property.md

WHAT IT DOES

What set-instance-property does on Executor Mcp Roblox

AI agents use set-instance-property to create or update resources in Executor Mcp Roblox, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Executor Mcp Roblox environment.

RISK

Why set-instance-property is rated Medium

An AI agent can call set-instance-property faster than any human can review: one bad instruction and it creates or modifies resources in Executor Mcp Roblox by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs set-instance-property safely

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

set-instance-property Rate-limited

set-instance-property 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": {
    "set-instance-property": {
      "limits": [
        {
          "counter": "set-instance-property_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 Executor Mcp Roblox, apply this rule, and every set-instance-property call is checked against it from then on.

FAQ

Questions about set-instance-property

What does the set-instance-property tool do? +

WRITES LIVE GAME STATE. Resolve a Luau expression to an Instance and assign one of its properties, returning. It is categorised as a Write tool in the Executor Mcp Roblox MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set-instance-property? +

Register the Executor Mcp Roblox MCP server in PolicyLayer and add a rule for set-instance-property: 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 Executor Mcp Roblox. Nothing to install.

What risk level is set-instance-property? +

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

Can I rate-limit set-instance-property? +

Yes. Add a rate_limit block to the set-instance-property 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 set-instance-property completely? +

Set action: deny in the PolicyLayer policy for set-instance-property. 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 set-instance-property? +

set-instance-property is provided by the Executor Mcp Roblox MCP server (okenjioxx/executor-mcp-roblox). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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