gemini_analyze_url

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

The description does not disclose side effects (e.g., whether files are stored, if results are cached) or authentication requirements. With no annotations, the description should clarify that this is a read-only operation, but it only says 'Analyze' without elaboration.

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 extremely concise (2 sentences, 21 words) with no redundant information. Every sentence contributes to understanding the tool's core functionality.

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 complexity (4 params, no output schema, no annotations), the description is too brief. It fails to explain what 'analyze' means, what the output looks like, or how errors are handled. The 100MB limit is a useful constraint but missing other context like rate limits.

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 coverage is 100%, so parameters are documented. The description adds minimal extra context beyond the schema, essentially restating the URL types. No parameter defaults or usage details are provided.

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 tool analyzes files from URLs (HTTP/HTTPS/GCS) and lists supported file types. However, it does not differentiate itself from sibling tools like gemini_analyze_youtube or gemini_analyze_image, which may also analyze URLs for specific media types.

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 specialized siblings (e.g., gemini_analyze_audio for audio files). No prerequisites, constraints, or when-not-to-use advice provided.

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