Gemini Analyze Document Tool

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

No annotations are provided, so the description carries the full behavioral burden, and it discloses almost nothing: no cost/latency implications of the flash-vs-other model, no limits on file size, no indication of whether the whole document is sent to a remote model, and no note on auth requirements. The format list is the only behavioral hint.

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 short sentence with no filler and the scope up front, which is structurally clean. However, its brevity comes from omission rather than efficiency, leaving a multi-format, multi-parameter tool under-described in the space where it matters.

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?

An output schema exists, so return values need not be explained, but the rest is thin: no annotations, no differentiation from several overlapping siblings, and no guidance on model selection or question phrasing. An agent cannot confidently pick this tool over gemini_summarize_pdf_tool or gemini_analyze_text_tool.

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 schema already documents file_path, question, and model; the baseline is 3. The description only adds the accepted format list, which loosely constrains file_path, and says nothing about valid model values or how the question influences output.

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?

States a verb (Analyze) and a resource (document) and lists accepted formats, so the basic function is legible. But "analyze" is generic and does not say what analysis is produced, and it is indistinguishable from siblings like gemini_summarize_pdf_tool, gemini_analyze_text_tool, and gemini_extract_tables_tool.

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?

There is no when-to-use guidance, no prerequisite, and no naming of alternatives, despite a crowded sibling set (summarize_pdf, extract_tables, analyze_text, analyze_image) that an agent must choose between. Pure absence of guidance, so a 2.

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