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

Annotations already declare readOnlyHint=true, destructiveHint=false, openWorldHint=false, so the safety profile is covered. The description adds genuinely useful behavioral context those annotations lack: results reflect the last Google sync and may therefore be stale relative to a live check. It doesn't say anything about latency, quota, or what happens when GSC isn't connected.

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, zero filler, with the core purpose front-loaded and the disambiguation deferred to the second sentence. Nothing repeats the title or the schema.

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 two-required-parameter read tool with full schema coverage and no output schema, the description covers what is needed to select and invoke it correctly, including the key staleness caveat. It would be stronger if it sketched what a returned status contains or noted the GSC-connection prerequisite.

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% — both projectId and pageId are documented as UUIDs with patterns. The description adds only the implicit notion that pageId identifies 'a specific page' and doesn't explain the project/page relationship or whether a URL could be substituted. Baseline 3 applies when the schema carries the parameter burden.

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 (get) and a precise resource (Google Search Console indexing status for a specific page), with the data provenance made explicit ('as last synced from Google'). It also names inspect_url as the differing sibling, so an agent can distinguish it from both inspect_url and get_all_page_statuses without opening a 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 clause 'inspect_url checks a URL live' gives a clear routing rule: use this tool for the stored/synced status, inspect_url for a live check. It does not explicitly say when-not to use it, nor does it mention the related bulk sibling get_all_page_statuses, so it stops just short of full alternatives coverage.

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