This record as markdown: /tools/hybridlabor-api-aos/create-polyline.md
What create_polyline does on Aos
AI agents use create_polyline to create or update resources in Aos, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Aos environment.
Why create_polyline is rated Medium
Creating a polyline is a reversible geometric operation that modifies the CAD model state by adding a new element. It does not execute arbitrary code, delete data irreversibly, or perform financial operations. The empty description lowers confidence slightly, but the context of CAD modeling tools and the tool name strongly indicate data creation/modification rather than mere querying.
From the tool's definition Tool name is 'create_polyline' which creates a new geometric polyline object in a CAD model. The sibling tools like 'add_hole', 'add_tap_hole', 'align_objects', 'boolean_cut', and 'assembly_add' all perform geometric modifications.
Attacks that exploit this kind of access
The rule that runs create_polyline 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 create_polyline, this is the rule to start with:
create_polyline 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Aos, apply this rule, and every create_polyline call is checked against it from then on.
Questions about create_polyline
create_polyline is a write tool on the Aos MCP server. It is categorised as a Write tool in the Aos MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Aos MCP server in PolicyLayer and add a rule for create_polyline: 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.
create_polyline is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the create_polyline 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 create_polyline. 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.
create_polyline 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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