upscale_creative

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

With no annotations provided, the description must disclose behavior itself. It only states that the image is upscaled creatively, but fails to clarify what 'creative' entails, how the required prompt influences the output, whether the process is generative or deterministic, or any side effects. A single sentence is insufficient for a tool with no annotation support.

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?

One concise, front-loaded sentence contains all the essential information without redundancy. It is appropriately sized for the tool's purpose and uses every word effectively.

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 has five parameters, no output schema, and no annotations, the description is severely under-specified. It does not explain the creative upscaling mechanism, how the prompt and negative prompt affect output, or what the user should expect in return. An agent would need additional context to correctly invoke this tool in varied scenarios.

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?

The schema already documents all five parameters with clear descriptions, yielding 100% schema coverage, so the baseline is 3. The tool description adds no parameter-specific meaning beyond the schema; it does not explain how the prompt guides creative upscaling or the role of negative_prompt, but does not need to due to complete schema coverage.

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 verb 'upscale' with the object 'image', specifies the creative style, and defines the target resolution 'up to 4K'. This uniquely distinguishes it from sibling tools like 'upscale_fast', which implies a non-creative upping operation.

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 word 'creatively' implies this tool is for aesthetic or imaginative upscaling, but the description provides no explicit guidance on when to choose this over 'upscale_fast' or other siblings. It does not name alternatives or exclusion criteria, leaving the agent to infer usage context.

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