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

With no annotations, the description carries the full burden of behavioral disclosure. It does disclose the main workflow (search, fetch, summarize) and price, which is useful. However, it does not mention output format, whether sources/citations are returned, potential limitations, or failure behavior, leaving significant gaps.

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, well-structured sentence that delivers the core functionality and pricing with no filler. It is appropriately front-loaded and every word earns its place.

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 multi-step tool with no output schema and no annotations, the description provides a high-level overview but lacks details about the return value structure, citation behavior, or any caveats. It is adequate for basic selection but not fully complete for agents expecting precise output expectations.

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 input schema already documents both parameters (query and resultCount) clearly with 100% coverage, so the description does not need to add param-level details. The description's mention of 'top results' loosely aligns with resultCount but does not explicitly explain or augment the schema. Baseline 3 is appropriate.

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 what the tool does: searches the web, fetches top results, and summarizes findings. It identifies a specific composite action, but it does not explicitly differentiate itself from the sibling tool 'deep_research' or other search/fetch tools, so it falls short of a 5.

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 about when to use this tool versus alternatives like deep_research, search_web, or fetch_webpage. The phrase 'one-stop research' implies a broad use case, but there are no explicit conditions, exclusions, or alternative recommendations.

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