generate_image

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

No annotations are provided, so the description must carry the full burden of behavioral disclosure. It fails to mention any behavioral traits such as rate limits, authentication needs, or potential side effects. The description only covers parameters and return type.

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 well-structured as a docstring with an Args section and a Returns section. It is clear and informative, though slightly verbose with all parameters listed individually.

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 complexity (8 parameters, 1 required) and the presence of an output schema, the description covers the basics but lacks details on error handling, constraints (e.g., allowed aspect ratios), or behavior when parameters are omitted. The return type is mentioned but not fully described.

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%, but the description thoroughly explains all 8 parameters, including their types and default values. It adds significant meaning beyond the schema, particularly for complex parameters like aspect_ratio and resolution.

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's purpose: 'Generate new images or edit existing ones with Grok Imagine'. It distinguishes from sibling tools like generate_video by focusing on image generation/editing.

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?

While the description explains what the tool does, it does not provide explicit guidance on when to use it versus alternatives (e.g., generate_video) or when not to use it. Usage context is implied but not stated.

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