This record as markdown: /tools/hybridlabor-api-aos/scale-objects-2d.md
What scale_objects_2d does on Aos
AI agents invoke scale_objects_2d to trigger actions in Aos. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
Why scale_objects_2d is rated High
Scaling objects is a geometric transformation that modifies the model state irreversibly in practical terms (scaling cannot be easily undone without user intervention). However, it does not delete or overwrite data (Destructive), nor does it create new data permanently (Write). It executes a transformation operation whose effects are state-dependent and would require explicit undo actions.
From the tool's definition Tool performs 'scale_objects_2d' which modifies geometry in Rhino 8. The server description explicitly states it 'give[s] AI agents direct, programmatic control of Rhino 8 — create geometry, run booleans, drive Grasshopper, capture viewports, and execute…
Attacks that exploit this kind of access
The rule that runs scale_objects_2d safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Aos, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For scale_objects_2d, this is the rule to start with:
scale_objects_2d stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Aos, apply this rule, and every scale_objects_2d call is checked against it from then on.
Questions about scale_objects_2d
Scale objects in two dimensions (planar scale preserving the third axis). It is categorised as a Execute tool in the Aos MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Aos MCP server in PolicyLayer and add a rule for scale_objects_2d: 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 Aos. Nothing to install.
scale_objects_2d is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the scale_objects_2d 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.
Set action: deny in the PolicyLayer policy for scale_objects_2d. 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.
scale_objects_2d is provided by the Aos MCP server (@hybridlabor-api/aos). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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