variant_pack

Generate N perturbed variants around an anchor parameter look and write the whole pack to the Obsidian vault as a morph_pack-compatible JSON. Probes the target COMP

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/variant-pack.md

WHAT IT DOES

What variant_pack does on tdmcp — TouchDesigner MCP server

AI agents use variant_pack 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 variant_pack is rated Medium

The tool creates multiple perturbed variants (generative/transformative operation) and explicitly writes them to persistent storage (Obsidian vault). This is a Write operation—it modifies the state of the vault by adding new JSON data structures. While it has some Read characteristics (probing the target component), the primary intent and effect is to create and persist new data.

From the tool's definition Tool generates and writes 'the whole pack to the Obsidian vault as...JSON' and 'Probes the target COMP', indicating data creation and modification operations that persist to storage.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

variant_pack Rate-limited

variant_pack 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": {
    "variant_pack": {
      "limits": [
        {
          "counter": "variant_pack_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 variant_pack call is checked against it from then on.

FAQ

Questions about variant_pack

What does the variant_pack tool do? +

Generate N perturbed variants around an anchor parameter look and write the whole pack to the Obsidian vault as a morph_pack-compatible JSON. Probes the target COMP. 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 variant_pack? +

Register the tdmcp — TouchDesigner MCP server MCP server in PolicyLayer and add a rule for variant_pack: 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 variant_pack? +

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

Can I rate-limit variant_pack? +

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

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

variant_pack 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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