desktop_guess_scene

THE RISK

Low Risk

Why desktop_guess_scene needs a policy

This tool searches for and retrieves configuration/scene JSON files. It is a read-only discovery operation with no side effects, data modification, or destructive actions. The word 'find' confirms it only locates existing files rather than creating or modifying them.

From the tool's definition Heuristically find scene/config JSON files used by 8th Wall Desktop

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

POLICY

How to control desktop_guess_scene

PolicyLayer is an MCP gateway — it sits between your AI agents and 8th Wall MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for desktop_guess_scene:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "desktop_guess_scene": {}
  }
}

desktop_guess_scene is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register 8th Wall MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More 8th Wall MCP Server tools

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Read 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.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about desktop_guess_scene

What does the desktop_guess_scene tool do? +

Heuristically find scene/config JSON files used by 8th Wall Desktop. It is categorised as a Read tool in the 8th Wall MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on desktop_guess_scene? +

Register the 8th Wall MCP Server MCP server in PolicyLayer and add a rule for desktop_guess_scene: 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 8th Wall MCP Server. Nothing to install.

What risk level is desktop_guess_scene? +

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

Can I rate-limit desktop_guess_scene? +

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

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

desktop_guess_scene is provided by the 8th Wall MCP Server MCP server (superdwayne/8thwallmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every 8th Wall MCP Server tool call.

Start from 8th Wall MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →