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TouchDesigner MCP

TouchDesigner MCP

by 8beeeaaat
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
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update_td_node_parameters

Update parameters of a specific node in TouchDesigner by providing its path and property values to modify.

Instructions

Update parameters of a specific node in TouchDesigner

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "nodePath": "<nodePath>",
      "properties": "<properties>"
    },
    "name": "update_td_node_parameters"
  }
}

Input Schema

NameRequiredDescriptionDefault
nodePathYesPath to the node (e.g., /project1/null1)
propertiesYes
detailLevelNoResponse detail level for tool output (minimal, summary, or detailed)
responseFormatNoStructured output format for formatted responses

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changedv2.1.0
    • changedInput schema / $schema
      Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"
    • addedInput schema / additionalProperties
      Added value: +false
  2. First observedv1.4.11

TDQS

C2.6/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations are absent, so the description carries the full disclosure burden. 'Update' implies mutation, but nothing is said about whether changes persist, require specific permissions, affect a live session only, or how failures are surfaced. The description does not disclose any behavioral traits or side effects needed to invoke it safely.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, front-loaded sentence with no wasted text, which is structurally efficient. However, its brevity is also a symptom of under-specification — it earns its minimal length only by being vague, not by delivering complete information compactly.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a state-changing tool with no annotations and no output schema, this definition is thin. It fails to describe what the nested properties object expects, what the mutation affects, or what a successful call returns. The richer sibling set (get_td_node_parameters, describe_td_tools) suggests the environment is complex enough that this gap is material.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 75%, but the uncovered parameter is properties, an unconstrained key-value object that is semantically the heart of this tool. The description adds nothing about how parameter values should be formatted, whether nested values or types are supported, or how property values map to TouchDesigner node properties, leaving the most critical input undefined.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description uses a specific verb (update) and resource (parameters of a specific node in TouchDesigner), conveying a clear purpose. It distinguishes from obvious siblings like get_td_node_parameters (read), delete_td_node (remove), and create_td_node (create) by virtue of its mutation verb, though this distinction is implicit rather than explicit.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is given on when to use this tool versus the sibling get_td_node_parameters or describe_td_tools. There is no mention of prerequisites (e.g., a running TouchDesigner instance), exclusions, or the complementary read/write relationship among the node tools. An agent must infer usage entirely from the name.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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