Generate image with SmartAPI

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

The description adds behavioral context beyond annotations: it mentions the tool spends SmartAPI balance, confirms it saves a local file, and notes that existing files are never overwritten (from schema). Annotations are minimal, so the description effectively carries the burden of disclosure.

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 three efficient sentences, front-loaded with the core action. Every sentence adds value: action, usage condition, and cost/behavior. No fluff or redundancy.

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 5 parameters and an output schema, the description covers the essential behavioral aspects (endpoint, cost, saving) but does not mention the output format or the return structure. It is mostly complete for an agent to understand usage.

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 100%, so baseline is 3. The description does not add per-parameter details beyond the schema, but it provides overarching context (paid endpoint, local saving) that indirectly helps. No significant extra parameter-level meaning 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 verb 'generate' and the resource 'image', specifying the paid SmartAPI gpt-image-2 endpoint and that it saves as a local file. This is specific and distinguishes the tool from potential alternatives, even though no siblings are listed.

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 explicitly says 'Use only when the user asks to create an image.' This provides a clear condition for when the tool should be invoked. However, it does not mention when not to use it or discuss alternatives, but with no siblings the guidance is adequate.

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