capture_topdown

SERVERSbox SOURCEsbox-mcp-server

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/sbox/capture-topdown.md

WHAT IT DOES

What capture_topdown does on Sbox

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

RISK

Why capture_topdown is rated Medium

An AI agent can call capture_topdown faster than any human can review: one bad instruction and it creates or modifies resources in Sbox by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs capture_topdown safely

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

capture_topdown Rate-limited

capture_topdown 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": {
    "capture_topdown": {
      "limits": [
        {
          "counter": "capture_topdown_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 Sbox, apply this rule, and every capture_topdown call is checked against it from then on.

FAQ

Questions about capture_topdown

What does the capture_topdown tool do? +

Capture a deterministic orthographic top-down inline PNG over targetId or an explicit center. Returns camera pose, fixed screen axes, ground-plane bounds, and world-units-per-pixel for measurement/placement. renderUI defaults false; output is capped at 1600x1200. It is categorised as a Write tool in the Sbox MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on capture_topdown? +

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

What risk level is capture_topdown? +

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

Can I rate-limit capture_topdown? +

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

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

capture_topdown is provided by the Sbox MCP server (sbox-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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