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

Annotations already declare readOnlyHint=true and destructiveHint=false, so safety is covered. The description adds meaningful context beyond that: only Google organic traffic counts, not total traffic — a caveat that prevents misreading the numbers — plus the implied ranking by visibility.

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?

Front-loaded with the core purpose and metrics, then the intent synonyms, then the scope caveat. Efficient overall, though the "[DEMO SINTÉTICA]" prefix is noise and the synonym list is slightly verbose.

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?

An output schema exists, annotations cover the safety profile, and the single parameter is fully documented, so the description only needs to establish purpose and scope — which it does. Minor gaps around sorting/limit behavior remain but are not required for correct invocation.

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?

With a single optional parameter at 100% schema description coverage (including examples and the 30-day default), the schema carries all parameter meaning. The description adds nothing about date_range, so baseline 3 applies.

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 (pages in Google Search Console) and enumerates the returned metrics (URL, clicks, impressions, CTR, average position). This clearly separates it from list_search_console_queries (queries) and get_search_console_summary (aggregate) without needing 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?

Gives concrete user-intent examples ("páginas con mejor SEO", "qué URLs rankean", "landings que reciben tráfico orgánico") that tell an agent when to pick this tool. It does not explicitly name sibling alternatives or state when not to use it, so it stops short of a 5.

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