MCP Servers

td-mcp

MCP server for controlling TouchDesigner from AI coding agents like Claude Code and Codex CLI, enabling operator manipulation, parameter control, and screenshot capture.

README

td-mcp

MCP (Model Context Protocol) server for controlling TouchDesigner from AI coding agents like Claude Code and Codex CLI.

Setup

1. TouchDesigner Side

Install the callbacks file into your TD project:

cd /path/to/your-td-project
uvx td-mcp install

Create a WebServer DAT in TouchDesigner
Set Port to 9980
Set the WebServer DAT's callbacks File parameter to td_mcp_callbacks.py
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2. Agent Side

Claude Code (`.mcp.json`)

{
  "mcpServers": {
    "touchdesigner": {
      "command": "uvx",
      "args": ["td-mcp"],
      "env": {
        "TD_HOST": "127.0.0.1",
        "TD_PORT": "9980"
      }
    }
  }
}

Codex CLI

codex mcp add touchdesigner \
  --env TD_HOST=127.0.0.1 \
  --env TD_PORT=9980 \
  -- uvx td-mcp

Tools

Tool	Description
`td_get_root`	Get project root path (call first)
`td_create_op`	Create an operator
`td_delete_op`	Delete an operator
`td_list_ops`	List child operators
`td_get_op_info`	Get operator info
`td_set_params`	Set parameters (batch)
`td_get_params`	Get parameters (with schema discovery)
`td_connect`	Connect operators
`td_disconnect`	Disconnect operators
`td_find_empty_space`	Find empty space in network editor
`td_execute`	Execute Python code in TD
`td_get_screenshot`	Capture TOP screenshot

Environment Variables

Variable	Default	Description
`TD_HOST`	`127.0.0.1`	TouchDesigner host
`TD_PORT`	`9980`	WebServer DAT port
`TD_TIMEOUT`	`10.0`	Request timeout (seconds)

Architecture

AI Agent → MCP Server (stdio) → HTTP Client → TouchDesigner WebServer DAT

Security Note

td_execute allows arbitrary Python execution inside TouchDesigner. Use only in trusted local environments.

License

MIT

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