This server sits between an agent and TouchDesigner’s WebServer DAT. Through MCP tools and prompts, the agent can manage nodes, inspect parameters, run Python, and check errors inside a project.
Builders who want Claude Code, Codex, Cursor, or any MCP-capable agent to work inside TouchDesigner.
You can let your agent edit and inspect TouchDesigner projects instead of doing every change by hand.
Creates and deletes TouchDesigner nodes, and lists nodes under a path with optional filtering.
Reads node parameters, node errors, class details, module help, and server info.
Runs Python scripts and node methods inside TouchDesigner.
Captures the current output of a TOP node as an image.
Includes prompts for node search, node connection, and error checking.
Compares the MCP server and TouchDesigner component API versions and explains when updates are needed.
This is an implementation of an MCP (Model Context Protocol) server for TouchDesigner. Its goal is to enable AI agents to control and operate TouchDesigner projects.
TouchDesigner MCP acts as a bridge between AI models and the TouchDesigner WebServer DAT, enabling AI agents to:
Please refer to the Installation Guide.
If you are updating, please refer to the procedure in the Latest Release.
This server enables AI agents to perform operations in TouchDesigner using the Model Context Protocol (MCP).
Tools allow AI agents to perform actions in TouchDesigner.
| Tool Name | Description |
|---|---|
create_td_node | Creates a new node. |
delete_td_node | Deletes an existing node. |
describe_td_tools | Generates a manifest of the available TouchDesigner tools. |
exec_node_method | Calls a Python method on a node. |
execute_python_script | Executes an arbitrary Python script in TouchDesigner. |
get_td_class_details | Gets details of a TouchDesigner Python class or module. |
get_td_classes | Gets a list of TouchDesigner Python classes. |
get_td_info | Gets information about the TouchDesigner server environment. |
get_td_module_help | Gets Python help() documentation for TouchDesigner modules/classes. |
get_td_node_errors | Checks for errors on a specified node and its children. |
get_td_node_parameters | Gets the parameters of a specific node. |
get_td_nodes | Gets nodes under a parent path, with optional filtering. |
get_top_image | Captures the current output of a TOP node as an image. |
update_td_node_parameters | Updates the parameters of a specific node. |
Prompts provide instructions for AI agents to perform specific actions in TouchDesigner.
| Prompt Name | Description |
|---|---|
Search node | Fuzzy searches for nodes and retrieves information based on name, family, or type. |
Node connection | Provides instructions to connect nodes within TouchDesigner. |
Check node errors | Checks for errors on a specified node, and recursively for its children. |
Not implemented.
Looking for local setup, client configuration, project structure, or release workflow notes? See the Developer Guide for all developer-facing documentation.
The MCP server and the TouchDesigner component are versioned on two independent axes: the npm package version and the API version (the contract between the MCP server and the .tox component). Each release declares the API version it ships with (expectedApiVersion) and the minimum it supports (minApiVersion, currently 1.3.0). The connected component's API version is compared against those two values — the npm package version itself never gates compatibility, so updating the MCP server alone never invalidates a supported component.
| API Server (component) | Condition | Behavior | Status |
|---|---|---|---|
| = expected API version | Matches the shipped .tox | ✅ Works silently | Compatible |
| ≥ minimum, < expected | Older component | ⚠️ "Update Recommended" notice appended to responses, continues | Warning |
| > expected, same MAJOR | Newer component | ⚠️ Warning to update the MCP server, continues | Warning |
| MAJOR above expected | Newer API generation | ❌ Execution stops — update the MCP server | Error |
| < minimum (or missing) | Too old | ❌ Execution stops — update the component | Error |
To resolve compatibility errors:
touchdesigner-mcp-td folder and replace it with the newly extracted contents.mcp_webserver_base component from your TouchDesigner project and import the .tox from the new folder.For developers: When developing locally, run npm run version after editing package.json (or simply use npm version ...). This keeps the Python API (pyproject.toml + td/modules/utils/version.py), mcpCompatibility.expectedApiVersion, MCP bundle manifest, and registry metadata in sync so that the runtime compatibility check succeeds.
For a deeper look at how the MCP server enforces these rules, see Version Compatibility Verification.
TouchDesignerClient caches failed connection checks for 60 seconds. Subsequent tool calls reuse the cached error to avoid spamming TouchDesigner and automatically retry after the TTL expires.ECONNREFUSED / "connect refused": start TouchDesigner, ensure the WebServer DAT from mcp_webserver_base.tox is running, and confirm the configured port (default 9981).ETIMEDOUT / "timeout": TouchDesigner is responding slowly or the network is blocked. Restart TouchDesigner/WebServer DAT or check your network connection.ENOTFOUND / getaddrinfo: the host name is invalid. Use 127.0.0.1 unless you explicitly changed it.ILogger, so you can check the MCP logs to understand why a request stopped before hitting TouchDesigner.We welcome your contributions!
git checkout -b feature/amazing-feature).npm test).git commit -m 'Add some amazing feature').git push origin feature/amazing-feature).Please always include appropriate tests when making implementation changes.
MIT
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