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

Annotations cover the read-only/non-destructive safety profile, so the bar is lower, yet the description adds substantial beyond-annotation behavior: the newest-first ordering, the 10-post and 50-review window limits, the nesting of replies, and the Google moderation status semantics. It omits whether results are paginated or how many comments are returned.

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?

It is front-loaded with the main scope statement, which is good. However, the middle is a densely stacked single sentence that packs platform lists, a parenthetical, and a mapping rule, making it hard to parse; it earns its place informationally but structure suffers.

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?

For a read-only list tool with no output schema, it conveys the important return-shape facts an agent needs (comment id/accountId/platform for follow-up tools, nested replies, Google rating and status semantics). The absence of pagination/volume details and explicit sibling routing are the remaining gaps.

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 coverage is 100% and each parameter is documented in the schema (including the enum and the list_accounts reference), so the description doesn't need to carry that load. It adds the googlebusiness = Google reviews clarification and the review-as-comment model, but no syntax beyond what the schema provides. Baseline 3 is appropriate.

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 specific verb and resource ('List recent comments') and precisely delineates scope across five platforms, including the unusual Google Business review mapping (each review is a comment). It clearly distinguishes itself from the sibling get_post_comments by covering an account-wide recent feed rather than a single post.

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?

Clear context is given: it's the recent-comments feed, newest first, with the 10-post/50-review window cap. However, it never explicitly names get_post_comments as the per-post alternative or states when NOT to use this tool, leaving the routing to inference from the sibling name.

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