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

Annotations already declare readOnlyHint and openWorldHint, so the safety profile is covered. The description adds genuinely useful operational context beyond that: daily rate limits, a queueing/retry mechanism via retry_after_s, and the caveat that results are indicative and exclude delivery. This is exactly the additional behavioral detail annotations cannot convey.

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 tight sentences, front-loaded with purpose before the operational caveats. Every sentence carries distinct information (purpose, rate limit/retry, verification caveat) with no filler, though retry_after_s assumes a field the agent must infer from elsewhere.

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?

Since an output schema exists, return values need not be explained, and the description adequately covers the operational essentials — the indicative-price scope, rate limits, retry behavior, and where final price must be confirmed. The only real gap is the input query's expected content, which is left unspecified.

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 0% and the sole 'query' parameter is undocumented — no format, examples, or expected syntax appear in either the schema or the description. The mention of 'New searches' hints that queries are the input but adds no real semantic detail, so the description fails to compensate for the coverage gap.

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 gives a specific verb+resource: 'Find indicative online prices from Google Shopping UAE', which tells the agent exactly what it retrieves and from which source. However, it never distinguishes itself from siblings like search_products or get_product, so an agent cannot tell which price-related tool to pick without opening schemas.

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?

Usage constraints are stated (strict daily limits, wait retry_after_s if queued) and the post-conditions are noted (verify variants/stock/final price at the store). But there is no explicit routing guidance — nothing says when to use this versus search_products or get_product, leaving the choice implied.

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