This record as markdown: /tools/cowork-os/rhino.read-layers.md
What rhino.read_layers does on CoWork OS
AI agents call rhino.read_layers 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.
Why rhino.read_layers is rated Low
This is a straightforward read operation that queries and returns information about Rhino (3D modeling software) layers and objects. It retrieves data without creating, modifying, deleting, or executing any changes. The 'read' verb and lack of any action language confirm this is a passive information retrieval tool with minimal security risk.
From the tool's definition Tool name 'read_layers' and description 'Read Rhino layer/object summary' explicitly indicate data retrieval with no modification or side effects.
Attacks that exploit this kind of access
The rule that runs rhino.read_layers 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.read_layers, this is the rule to start with:
rhino.read_layers is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect CoWork OS, apply this rule, and every rhino.read_layers call is checked against it from then on.
Questions about rhino.read_layers
Read Rhino layer/object summary. It is categorised as a Read tool in the CoWork OS MCP Server, which means it retrieves data without modifying state.
Register the CoWork OS MCP server in PolicyLayer and add a rule for rhino.read_layers: 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.
rhino.read_layers is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the rhino.read_layers 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 rhino.read_layers. 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.
rhino.read_layers 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.
More on CoWork OS, and thousands of servers like it.
This server
Across the catalogue