gemini_summarize_pdf_tool

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

The description does not mention whether the operation is read-only, any side effects, or potential errors. Without annotations and with no such disclosure, agents cannot infer the tool's behavioral impact.

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 exceedingly brief—one sentence—which is concise and free of fluff. However, it is so terse that it sacrifices necessary detail, so it is not optimally structured for agent understanding.

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 an output schema (though not shown), the description does not explain what the summary output looks like or any error handling. It lacks critical context about return values and potential failure modes, making it incomplete.

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 descriptions for 'model', 'style', and 'file_path' are present and provide basic meaning, so coverage is 100%. However, the tool description itself adds no extra context or constraints, and the parameter descriptions are generic (e.g., 'Model to use' could be clearer).

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 action ('Summarize') and the resource ('PDF document'), which is specific enough. However, it lacks distinguishing details from sibling tools like gemini_summarize_tool or gemini_analyze_document_tool, which might also handle text summarization.

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 is provided on when to use this tool over alternatives, nor any prerequisites or context. The description is too minimal to help an agent decide if this is the appropriate tool.

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