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

Annotations cover safety (readOnlyHint=true, openWorldHint=true), so the bar is lower. The description still adds real value by disclosing the notConfigured:true fallback when no API key exists, which is behavior an agent could not infer from annotations or schema. It doesn't mention rate limits or caching, but the key edge case is covered.

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?

Two sentences, front-loaded with the core purpose and the return shape. Slightly redundant repetition of 'Bing Webmaster Tools URL-submission quota' across title and description, but no wasted clauses.

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?

Output schema exists, so return-value structure needn't be explained. For a single-parameter read tool with full annotation coverage, the description adds the notConfigured edge case and the daily/monthly distinction, giving enough to call it correctly. Missing only the siteUrl format hint.

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?

One required parameter (siteUrl) at 0% schema description coverage, but zero parameters means baseline 4; with one parameter it drops to a 3. The description mentions 'for a property' which implies siteUrl maps to a property identifier, but gives no format, source, or validation guidance, and the schema provides only minLength:1.

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-resource ('Remaining Bing Webmaster Tools URL-submission quota') and scopes it to a property. Distinguishes from siblings like get_inspection_quota (different engine) and submit_indexnow_urls (different submission path). An agent can identify the tool without opening the 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?

The description explains what the tool returns but never says when to call it, what triggers it, or how it relates to sibling tools such as submit_sitemap or get_crawl_stats. No alternatives are named and no conditions are given for selection.

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