mesh_from_surface

A write tool on the Aos MCP server.

SERVERAos SOURCE@hybridlabor-api/aos

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/hybridlabor-api-aos/mesh-from-surface.md

WHAT IT DOES

What mesh_from_surface does on Aos

AI agents use mesh_from_surface 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.

RISK

Why mesh_from_surface is rated Medium

The tool creates a new mesh representation from a surface, which is a reversible data creation/modification operation (Write category). It does not delete or overwrite existing data (not Destructive), does not execute arbitrary code (not Execute), and has no financial impact.

From the tool's definition Tool name 'mesh_from_surface' indicates creation of a new mesh object from existing geometry. The server description emphasizes 'create geometry' as a primary capability, and this tool fits that pattern of creating/modifying CAD objects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs mesh_from_surface 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 mesh_from_surface, this is the rule to start with:

mesh_from_surface Rate-limited

mesh_from_surface 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": {
    "mesh_from_surface": {
      "limits": [
        {
          "counter": "mesh_from_surface_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 Aos, apply this rule, and every mesh_from_surface call is checked against it from then on.

FAQ

Questions about mesh_from_surface

What does the mesh_from_surface tool do? +

mesh_from_surface 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.

How do I enforce a policy on mesh_from_surface? +

Register the Aos MCP server in PolicyLayer and add a rule for mesh_from_surface: 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.

What risk level is mesh_from_surface? +

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

Can I rate-limit mesh_from_surface? +

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

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

mesh_from_surface 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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