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

Annotations already declare readOnlyHint=false, destructiveHint=true, idempotentHint=false and openWorldHint=true, so the safety profile is covered structurally. The description adds that this submits an asynchronous Builder task (implying later retrieval) and the fixed collector id, but says nothing about how the task is tracked, reversibility, rate limits, or how to fetch results.

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?

The trigger clause is front-loaded, then the action follows, which is a sensible order. However, the first sentence is keyword-stuffed with near-synonyms (评论信息/评论/reviews/商家评论) and verb lists, which pads the text without adding routing precision.

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 carries the burden of explaining the return, yet it never says a task is created whose results must be fetched via the scraper_task_result / scraper_task_status siblings. For an async task-submission tool in a large sibling set, that pipeline handoff is a meaningful omission.

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%, so every parameter (url, file_name, days_limit) is already documented with defaults and semantics. The description adds only the collector identifier binding (google_comment_by-url) and no extra meaning for the input fields, so the 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?

The description states a concrete action (submit a Google Map comment collection Builder task) and a resource (Google Maps reviews/comments), plus the fixed collector identifier google_comment_by-url. It is clearly differentiated from other Google tools by scoping to comments/reviews, though it never names the closest siblings (google_map_details, google_maps) to disambiguate.

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 an explicit trigger condition: use when the user needs Google Maps review data combined with collection verbs (采集/抓取/爬取/获取/提取). That is a clear 'when to use' rule, but there is no 'when not to use' and no alternative tool is named, leaving the boundary with google_maps / google_map_details to inference.

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