get_top_pages

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

Annotations already declare readOnlyHint=true, idempotentHint=true, openWorldHint=true, and destructiveHint=false, so safety, repeatability, and external dependence are fully covered by structured data. The description's only added behavioral detail is that results carry a CTR benchmark score per position, which is useful but thin. It says nothing about permissions, quota, or data freshness for a live Search Console call, so there is no credit above baseline.

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 sentences, no filler, and the capability statement is front-loaded ahead of the routing advice. The routing sentence is dense with three sibling names, but each pairing of tool and condition earns its place rather than padding.

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 no output schema, the description still discloses the shape of the result (pages ranked by clicks, each scored against a position CTR benchmark), which is the key return-value context an agent needs. Defaults and enum values live in the schema, and safety is covered by annotations, so the only minor gap is the absence of any note on scope or auth for the connected Search Console property.

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% with six well-documented parameters including three enums, so the schema carries the full parameter burden. The description only gestures at ordering ('by clicks') and never explains limit, period, searchType, or device semantics. Baseline 3 is correct when the schema does all the work.

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+resource ('List the top Search Console pages by clicks') plus a distinctive second function ('score each page against the CTR benchmark for its position'). That benchmark-scoring behavior separates it cleanly from get_top_queries and the other list-style siblings without needing to open 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?

Gives an explicit triggering condition ('Use when the user asks which URLs earn the search traffic') and then routes to three named alternatives with the condition that selects each: get_top_queries for queries, get_traffic_by_device for a device split, find_ctr_opportunities for pages far below benchmark. This is textbook when/when-not/alternatives coverage.

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