analyze_image

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It discloses the use of 'Gemini' but fails to mention what the output looks like, whether the operation is read-only, or any potential side effects. The description is too minimal to provide meaningful transparency.

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 conveys the essential purpose without any filler. It is appropriately sized for a simple tool and immediately front-loads the key action and target.

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 low complexity and complete schema, the description is mostly adequate. However, the absence of an output schema means the description should have indicated what the tool returns (e.g., a text answer) or any limitations. This missing information prevents it from being fully complete.

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 the baseline is 3. The description adds no additional meaning beyond the schema's parameter descriptions. It does not clarify how 'prompt' relates to the image or any format expectations for imageData/imagePath, but the schema already documents these sufficiently.

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 primary function: 'Analyze an image and answer questions about it using Gemini.' The verb 'analyze' and resource 'image' are specific, and the mention of answering questions distinguishes it from sibling tools that generate or edit images.

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 provides clear context for when to use the tool (analyzing images, not creating/modifying them), though it does not explicitly name alternative tools or state exclusion criteria. The purpose alone is enough for an agent to infer appropriate usage given the sibling tools.

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