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

Adds real context beyond annotations: live read ("now"), an authentication prerequisite, a hard cap of ten pages, and cost ("Free"). It does not say what happens when Bing is unconnected or how results are ordered, and the "Reads" framing sits awkwardly with readOnlyHint=false, though nothing claims mutation.

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?

Front-loaded with the action and returns, then terse fragments for the prerequisite and cost. Dense and mostly waste-free, though the run-on second clause packs the three returned fields into one long sentence.

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 no output schema, the description does the work of explaining return values (indexed status via 2xx crawl, last crawl time, status code) and the prerequisite. Missing only failure behavior when bing_connect hasn't run and whether the cap is configurable.

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?

Zero parameters, so baseline is 4. The description still usefully explains the implicit data scope (home plus the ten most recently shipped pages), which the empty schema cannot convey.

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 specific verb and source ("Reads Bing Webmaster Tools") plus the exact scope (home page plus up to ten shipped pages) and the fields returned (indexed?, last crawl, status). It is clearly distinct from siblings bing_connect (auth) and bing_submit (submission).

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?

"Needs bing_connect first" gives an explicit prerequisite, and the ChatGPT/Bing rationale explains why to call it. It doesn't state exclusions (e.g. when to use visibility or search_positions instead of this Bing view), so not quite a 5.

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