get_image

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

With no annotations present, the description carries the burden. It implies a read-only operation and states that image data is returned, but it does not disclose potential side effects, error conditions, or output format. It is adequate for a simple retrieval tool but not rich.

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 only two short sentences, focused, and free of unnecessary detail. It front-loads the core behavior and does not waste words.

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?

For a one-parameter retrieval tool, the description covers the essential action and return claim. It lacks an explicit output format or error behavior, but with no output schema and no annotations it is still reasonably complete for the low complexity.

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%, and the only parameter image_id is already described. The phrase 'by its ID' merely restates the parameter purpose without adding format, constraints, or additional context beyond the schema.

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 states a specific verb and resource: 'Get a specific image by its ID' and notes it returns image dataasia. This distinguishes it from list_images and capture_screenshot, though it does not explicitly contrast with sibling load_image or get_image_base64.

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 similar siblings like load_image or get_image_base64. The agent must infer the appropriate selection from the name and description alone.

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