add_timecode_overlay

Overlay a running HH:MM:SS:FF timecode (or a countdown) onto an input TOP as VISUAL pixels — a Text TOP whose text expression re-evaluates every frame, composited

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/add-timecode-overlay.md

WHAT IT DOES

What add_timecode_overlay does on tdmcp — TouchDesigner MCP server

AI agents use add_timecode_overlay 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 add_timecode_overlay is rated Medium

This tool modifies visual content by adding a new layer (Text TOP composited onto the input) in a reversible manner. It does not execute arbitrary code, delete data, or incur financial obligations. The modification is visual-only and can be undone by removing the overlay or reloading the project, placing it in the Write category.

From the tool's definition The tool creates and applies a visual overlay — it modifies the input TOP by compositing a dynamically generated Text TOP onto it every frame.

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

RECOMMENDED RULE

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

add_timecode_overlay Rate-limited

add_timecode_overlay 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": {
    "add_timecode_overlay": {
      "limits": [
        {
          "counter": "add_timecode_overlay_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 add_timecode_overlay call is checked against it from then on.

FAQ

Questions about add_timecode_overlay

What does the add_timecode_overlay tool do? +

Overlay a running HH:MM:SS:FF timecode (or a countdown) onto an input TOP as VISUAL pixels — a Text TOP whose text expression re-evaluates every frame, composited. 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 add_timecode_overlay? +

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

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

Can I rate-limit add_timecode_overlay? +

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

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

add_timecode_overlay 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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