create_background

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

No annotations are provided, so the description carries full responsibility for behavior. It discloses the core creation operation but omits side effects such as whether an existing output_path is overwritten, what format/codec is produced, or whether additional resources are created.

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 clear sentence with no filler, and the main action is front-loaded. It loses one point only because the extreme brevity leaves needed semantics to the schema.

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 tool with 7 parameters, zero annotations, and zero schema descriptions, the description is incomplete. It does not explain what kind of video is produced, default parameter behavior, or how create_background fits with sibling composition tools. The output schema does not compensate for missing parameter and workflow context.

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%, yet the description does not enumerate or explain any parameter. It weakly implies that b/g/r denote color components and that dimensions/duration/output_path relate to the video, but it does not specify units, ranges, or the role of output_path beyond the schema defaults.

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 uses a specific verb and resource ('Create a solid-color video background') and the 'solid-color' qualifier distinguishes it from gradient or animated scene siblings. It does not explicitly identify a sibling, but the purpose is immediately understandable.

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 gives no guidance about when to use this tool versus alternatives such as create_gradient_animation or create_animated_scene. There is no mention of prerequisites, placement in a pipeline, or exclusions, so the 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.