create_companion_surface

SERVERtdmcp — TouchDesigner MCP server SOURCE@dpantani/tdmcp

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/io-github-pantani-tdmcp/create-companion-surface.md

WHAT IT DOES

What create_companion_surface does on tdmcp — TouchDesigner MCP server

AI agents use create_companion_surface to create or update resources in tdmcp — TouchDesigner MCP server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your tdmcp — TouchDesigner MCP server environment.

RISK

Why create_companion_surface is rated Medium

This tool creates and adds new UI elements (fader panels, cue panels, custom parameters) to an existing TouchDesigner component. While it modifies the project, these changes are reversible (panels and parameters can be deleted or modified). It does not execute arbitrary code, delete data, or move financial assets.

From the tool's definition The tool "creates" a companion performance surface and "add[s]" custom parameters and panels to TouchDesigner nodes/COMPs. These are generative/additive operations that modify the project structure.

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_companion_surface safely

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

create_companion_surface Rate-limited

create_companion_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": {
    "create_companion_surface": {
      "limits": [
        {
          "counter": "create_companion_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 tdmcp — TouchDesigner MCP server, apply this rule, and every create_companion_surface call is checked against it from then on.

FAQ

Questions about create_companion_surface

What does the create_companion_surface tool do? +

Build a companion performance surface for an existing node/COMP: infer useful primitive parameters, add bound custom parameters, create a playable fader/cue panel, and optionally append a read-only preflight report. Use after generating a component that needs a human-facing control surface without hand-wiring every parameter. It is categorised as a Write tool in the tdmcp — TouchDesigner MCP server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_companion_surface? +

Register the tdmcp — TouchDesigner MCP server MCP server in PolicyLayer and add a rule for create_companion_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 tdmcp — TouchDesigner MCP server. Nothing to install.

What risk level is create_companion_surface? +

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

Can I rate-limit create_companion_surface? +

Yes. Add a rate_limit block to the create_companion_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 create_companion_surface completely? +

Set action: deny in the PolicyLayer policy for create_companion_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 create_companion_surface? +

create_companion_surface is provided by the tdmcp — TouchDesigner MCP server MCP server (@dpantani/tdmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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