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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety and open-web nature are covered. The description adds nothing beyond that: no note on rate limits, result freshness, or coverage. It also does not contradict the annotations, so no contradiction flag.

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?

It is extremely short, which avoids waste, but it is under-specified rather than concise. There is no front-loaded scope or context, so the brief length reflects missing content more than disciplined editing.

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?

The tool has five parameters, an output schema, and sits among many overlapping search siblings. The description supplies almost none of the context an agent needs: no scope, no usage routing, no behavior notes. The structured fields cover parameters and safety, but the description does little to complete the picture.

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 all five parameters including Query, Page, Count, Country, and Language. The description adds no parameter detail beyond what the schema provides, which is the baseline case.

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 'Bing search.' names a verb and a resource, so an agent knows it performs a Bing-backed web search. However, it is essentially a restatement of the tool name with no scope, differentiation from siblings like bing_news, bing_images, or the many other web search tools (brave_search, duckduckgo_search), so it sits at vague-but-not-tautological.

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 indication of when to use this tool versus alternatives, and no exclusions or prerequisites are given. With dozens of sibling search endpoints present, the absence of any routing guidance is a real gap.

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