rhino.capture_viewport

Capture the active Rhino viewport to an image

SERVERCoWork OS SOURCECoWork-OS/CoWork-OS

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/cowork-os/rhino.capture-viewport.md

WHAT IT DOES

What rhino.capture_viewport does on CoWork OS

AI agents call rhino.capture_viewport to retrieve information from CoWork OS without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why rhino.capture_viewport is rated Low

This tool takes a screenshot/snapshot of the Rhino 3D application viewport. It is a read-only operation that retrieves visual data and does not modify, delete, or execute anything. Similar to blender.capture_viewport on the same server, it simply captures what is displayed.

From the tool's definition 'Capture the active Rhino viewport to an image' — reads/captures the current visual state of the viewport without modifying any data

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs rhino.capture_viewport safely

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

rhino.capture_viewport Allowed

rhino.capture_viewport is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "rhino.capture_viewport": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about rhino.capture_viewport

What does the rhino.capture_viewport tool do? +

Capture the active Rhino viewport to an image. It is categorised as a Read tool in the CoWork OS MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on rhino.capture_viewport? +

Register the CoWork OS MCP server in PolicyLayer and add a rule for rhino.capture_viewport: 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 CoWork OS. Nothing to install.

What risk level is rhino.capture_viewport? +

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

Can I rate-limit rhino.capture_viewport? +

Yes. Add a rate_limit block to the rhino.capture_viewport 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 rhino.capture_viewport completely? +

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

rhino.capture_viewport is provided by the CoWork OS MCP server (CoWork-OS/CoWork-OS). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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