anim-set_timeline

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

With no annotations, the description should disclose that this is a write operation affecting the scene's timeline. It only says 'set' without mentioning side effects or whether it modifies the scene state.

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 extremely concise, one sentence, with no redundant words. It clearly conveys the core functionality.

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?

For a simple setter with four straightforward parameters, the description is minimally adequate. It lacks usage context and edge cases, but the core purpose is clear.

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 description does not add meaning beyond the schema property titles. It lists parameter names but provides no explanation of units, constraints, or how they interact. Since schema descriptions are absent, this is a gap.

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 sets scene timeline range, current frame, and frame rate. It distinguishes from similar tools like anim-set_frame (which only sets current frame) and anim-set_interpolation.

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?

It does not explain when to use this tool versus alternatives, such as when to set the timeline range vs. only setting a single frame. No context or exclusions are provided.

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