blend-ai

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

With no annotations provided, the description carries full burden for behavioral disclosure. While it mentions the tool sets the world background and returns a confirmation dict, it doesn't address important behavioral aspects like whether this is a destructive operation (likely yes, but unstated), permission requirements, side effects on rendering, or error conditions. The description provides basic functional information but lacks critical behavioral context.

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 efficiently structured with a clear purpose statement followed by well-organized Args and Returns sections. Every sentence earns its place: the first establishes the tool's function, and the subsequent lines provide necessary parameter details without redundancy. It's appropriately sized for a tool with three parameters.

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 the tool's moderate complexity (3 parameters, no annotations, but has output schema), the description is mostly complete. It covers the purpose and parameter semantics well, and the output schema handles return values. However, it lacks behavioral context about the tool's effects and constraints, which would be valuable for a mutation tool in a 3D environment 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?

With 0% schema description coverage (titles only: 'Color', 'Hdri Path', 'Strength'), the description provides essential semantic information beyond the schema. It explains that color is an RGB array, hdri_path requires an absolute path, they're mutually exclusive, and strength has a default of 1.0. This fully compensates for the schema's lack of 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 clearly states the specific action ('Set the world background') and the two resource types ('solid color or HDRI environment map'). It distinguishes itself from siblings like set_material_color or set_light_property by focusing on the world background specifically, not other scene elements.

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 through the parameter descriptions (mutually exclusive color/hdri_path), but doesn't explicitly state when to choose this tool over alternatives. No prerequisites or context for when world background changes are appropriate are mentioned, leaving usage somewhat implied rather than guided.

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