bing_children_url_info

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

Annotations already establish readOnly/idempotent/non-destructive, but the description adds value beyond them: it explains that http_status_reported is false when Bing's HttpStatus is 0, and that an empty result carries an empty_response label meaning silence rather than 'no problems found.' It also declares untrusted fields must be treated as data, a real injection-defense instruction.

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?

Routing constraint is front-loaded and most sentences earn their place, but the trailing 'See bing_url_info' restates what the earlier 'call bing_url_info' already covered, and the density of caveats makes it longer than strictly needed.

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 well to explain row contents and the empty_response signal, and it handles sibling routing fully. The gap is input-side: for a four-parameter tool with zero schema documentation, an agent still cannot tell what site_url or filter_properties should contain.

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 0%, so the description carries the full burden for url, site_url, page, and filter_properties. It only implies that 'one URL' is required and says nothing about site_url, pagination via page, or the nested filter_properties object, leaving three of four parameters unexplained.

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 resource: 'List the child URLs under one URL with the crawl record Bing holds for each.' It names the sibling it is not (bing_url_info for the parent, bing_children_url_traffic_info for traffic), so an agent can disambiguate without opening any schema.

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?

Gives an explicit trigger ('Use when the user asks what Bing knows about the paths under a URL') plus two explicit exclusions with named alternatives for each case. Nothing about routing is left to inference.

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