anim.set_timeline

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

No annotations are provided, so the description bears full responsibility for disclosing behavior. It states a mutation (set) but does not mention side effects (e.g., does it overwrite keyframes? require specific mode?), permission requirements, or potential destructive impacts. The description offers minimal behavioral insight beyond the operation itself.

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 a single sentence of 10 words, perfectly front-loaded with verb and resource. Every word earns its place with no redundancy or filler.

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?

Given 4 optional parameters, no output schema, and no annotations, the description is insufficiently complete. It does not explain default behavior when parameters are missing, whether partial updates are supported, or how the timeline range interacts with current frames. An agent would lack critical behavioral cues for correct invocation.

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?

Schema description coverage is 0%, so the description must compensate. It provides a high-level mapping to parameters ('range' maps to frame_start/frame_end, 'current frame', 'frame rate') but omits details about constraints (e.g., frame_start must be less than frame_end, fps minimum 1), defaults, or behavior when parameters are omitted. The schema itself has titles but the description adds little incremental meaning.

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 specifies the action ('Set') and the resource ('scene timeline range, current frame, and frame rate'). It distinguishes itself from siblings like 'anim.set_frame' (which likely sets only a single frame) and 'anim.timeline' (which may be informational) by covering multiple aspects of the timeline.

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 implies usage when modifying timeline properties but provides no explicit guidance on when to use this tool versus alternatives like 'anim.set_frame' or 'anim.timeline'. No mention of prerequisites, restrictions, or context-specific recommendations.

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