Create video player

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

Annotations include readOnlyHint=false and destructiveHint=false, and the description adds behavioral details such as exposing live controls and outputting as a Null. It explains the empty player scenario. No contradiction with annotations, but could clarify network creation behavior under open world hint.

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

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

The description is two sentences, efficient, and front-loaded with the primary purpose. No unnecessary words or repetition.

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

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

Covers core functionality, use case example, and integration hints. Lacks explanation of parent_path parameter and behavior on repeated calls. Given moderate complexity, it is fairly complete.

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

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

The schema has 67% description coverage; the description reinforces the files parameter behavior but does not cover parent_path or expose_controls beyond schema defaults. It adds value by explaining file count scenarios but falls short of full compensation.

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

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

The description clearly states the tool builds a movie/clip player in TouchDesigner, specifying the internal structure (Movie File In TOP or Switch TOP with Clip selector) and output (Null). It distinguishes from sibling tools by mentioning integration with create_layer_mixer and bind_to_channel.

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

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

The description provides usage context by indicating 'For VJ clip playback' and explaining behavior based on number of files (0, 1, 2+). It suggests mixing with other tools but does not explicitly state when not to use this tool versus alternatives.

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