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

Annotations exist (readOnlyHint=false, destructiveHint=true, idempotentHint=false, openWorldHint=true), but the description adds no behavioral context beyond the trigger. It does not explain the non-read-only/destructive annotation, the 5-minute cache behavior (only in the schema), auth requirements, or rate limits, leaving the surprising 'destructive' flag unexplained for what reads like a read-only search.

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 a single sentence, so it is compact and front-loads the core purpose. However, the trailing facet list largely duplicates the parameter schema and reads as a run-on, so not every clause 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?

With 11 parameters, 100% schema coverage, and annotations present, the structured fields carry most of the burden. The description is minimally adequate but omits anything about output format (the json parameter), pagination semantics, or the nature of results, leaving it thin for a tool with this many knobs and no output schema.

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 baseline is 3. The description lists facets that loosely map to several of the 11 parameters (location, lat/lon, cc, mkt, safeSearch, first, filters), but adds no syntax, format, or default information beyond what the schema already documents.

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 names a specific verb and resource ('通过 Bing 搜索公开网页信息' / search public web information via Bing) and enumerates the facets it supports (location, lat/lon, country, language, safe filtering, pagination, advanced filters). It is clear about what the tool does, but it offers no differentiation from siblings such as google_search, duckduckgo_search, or yandex_search.

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?

The whole statement is framed as a trigger condition ('当用户需要...时触发'), which gives explicit when-to-use context. However, it names no exclusions and no alternative engines, so an agent cannot tell from the text why it should choose this over google_search or duckduckgo_search.

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