Generate an image with OpenAI

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only states that it generates one image, which is minimal. It does not mention output format (e.g., URL or file), potential costs, rate limits, or any side effects. For a generation tool that might involve external API calls and delays, this is insufficient.

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 that is front-loaded with the core action. It is concise and free of filler or redundancy, earning full marks for efficiency.

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 (4 parameters, 2 enums, no output schema), the description is under-specified. It covers the basic action but lacks usage guidance, behavioral notes, and any explanation of what the response will contain. While parameters are well-documented in schema, the overall description is too sparse for a complete evaluation.

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 100%, so the schema already describes all parameters. The description adds no additional meaning beyond restating that it uses a text prompt, which is already in the prompt parameter's description. Per rubric, baseline is 3 for high schema coverage, and no extra value is added.

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 function: generating one image from a text prompt using OpenAI's image generation API. It specifies the verb 'generate', the resource 'image', and distinguishes from the sibling generate_text by focusing on image output.

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?

No guidance on when to use this tool versus alternatives. The sibling tool generate_text is not mentioned, and there are no conditions, exclusions, or context for selecting image generation over text generation. The description provides only the basic action without usage context.

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