inspect_video_overlay

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

No annotations are provided, and the description does not disclose any behavioral traits beyond the action. It doesn't state whether the tool returns an image, writes a file, or just displays a view internally, nor any side effects, permission requirements, or performance implications. The description gives no contract information.

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, efficient sentence that leads with the main verb and then the comparison purpose. It is not verbose and gets to the point, but it lacks essential details, so it earns high marks for conciseness but not for completeness.

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?

With zero annotations, no output schema, and four undocumented parameters, the description is far from complete. An agent cannot determine the output format, parameter meanings, or appropriate use cases, leaving critical gaps 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 coverage is 0% and the description does not mention any of the four parameters (frames, tile_width, tile_height, sample_count). An agent cannot infer what 'frames' refers to, how tile size affects output, or what sample_count controls. The description fails to compensate for the lack of schema descriptions.

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 states a clear action (render a contact sheet), the subject (the model), and the context (mapped reference-video frames) with explicit comparison goals (pose, silhouette, timing, foot-contact). It is specific enough to separate it from render_frame and render_video_overlay, though it does not explicitly name alternatives.

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?

There is no guidance on when to use this tool versus its siblings (e.g., render_video_overlay or render_frame). No exclusions, prerequisites, or conditions for selecting this tool are mentioned. An agent would have to infer the purpose from the description alone.

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