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

Annotations already declare destructiveHint=true and openWorldHint=false, but the description goes further by enumerating exactly what is destroyed by the cascade (topic clusters, content groups, saved filters, inspections, annotations) and clarifying the external-system boundary. That is precisely the disclosure an agent needs before invoking an irreversible mutation.

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?

Three short sentences, front-loaded with the action, followed by blast radius and then the scope caveat and guard. No filler, and each sentence carries distinct decision-relevant information.

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 an output schema present, return values need no explanation, and annotations plus the description cover safety and cascade scope. The remaining gap is that it never states whether the deletion is permanent/reversible or what authorization the caller needs, which matters for a destructive tool.

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 50%: confirm is documented in the schema, but siteUrl is not, and the description only implies it via 'property' without giving format (URL vs. sc-domain: style identifier). Baseline 3 is appropriate since the description adds scope meaning but not parameter syntax.

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?

Specific verb+resource ('Unregisters a property from GSC Wizard') with an explicit scope boundary that separates it from the Google Search Console product itself. Among a large family of delete_* siblings, the cascade clause makes clear this is the property-level delete rather than an entity-level one.

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?

It gives a clear when-not condition ('Does NOT remove the property from Google Search Console itself') and the confirm=true guard against accidental deletes. It stops short of naming an alternative for softer operations (e.g. update_site to modify, or remove_tracked_urls to stop tracking a URL), so the agent must infer those.

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