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

Annotations already declare readOnly, idempotent, openWorld and non-destructive, so the safety profile is covered. The description adds the net-new fact that results come back as a compact table with specific columns, but says nothing about quota consumption (URL Inspection is metered), latency, or permission requirements for a batch live-check.

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?

A single tight sentence that front-loads the operation and then lists outputs. No filler, though the return-column enumeration makes it denser than strictly necessary for an invocation-time description.

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?

For a batch read tool with no output schema, the return-field list is a useful addition that compensates somewhat for the missing output contract. Still absent are the property prerequisite, quota/latency expectations, and any behavior when only some URLs fail, which matter for an open-world batch check.

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 coverage is only 50%: 'property' is documented in the schema while 'urls' is not described there. The description partially compensates by stating the 10-URL ceiling, but that cap is already enforced by maxItems and it says nothing about the property id format or per-URL failure behavior.

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 ('Inspects up to 10 URLs') and enumerates the returned fields, so the intent is unambiguous. It implicitly separates itself from the single-URL sibling gsc_inspect_url via the batch cap, but never names or contrasts with that sibling, so differentiation must be inferred.

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 when-to-use guidance, no prerequisites (e.g. needing a verified property), and no routing advice versus gsc_inspect_url, gsc_sitemaps or gsc_search_analytics. Usage can only be guessed from the purpose statement.

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