gsc indexation watchlist

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

The annotations already declare readOnlyHint=true and idempotentHint=true. The description adds meaningful behavioral context with 'without storing state' and 'returns alert/review/ok assessments', which helps an agent understand side effects and result semantics beyond the raw annotations.

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 short sentences with no filler. The key facts—read-only nature, watchlist scope, 10-URL cap, return categories, and statelessness—are front-loaded and every clause contributes value.

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 read-only, idempotent tool with a full schema and output schema, the description captures purpose, scope, quota, result types, and side-effect behavior. It lacks only a sentence directing users away from overlapping siblings, which would make it fully complete.

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 every parameter already has meaningful documentation in the schema. The description adds no per-parameter detail, but the baseline score of 3 is appropriate because the schema carries the semantic weight.

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 states a specific verb ('Inspects') and resource ('URL Inspection watchlist'), and names the distinctive output ('alert/review/ok assessments'). It clearly differentiates the tool from a generic inspection call, but it does not explicitly name or contrast sibling tools like gsc_bulk_inspect_urls.

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?

'Watchlist for critical URLs' gives a clear intended use case: monitoring a curated set of important URLs rather than performing ad-hoc inspections. It does not provide explicit when-not-to-use guidance or name alternatives, so it stops short of full exclusion context.

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