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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so 'Read-only' in the description is largely redundant. It adds nothing about ordering, pagination beyond the limit param, or whether results are capped or truncated, which are the behavioral facts an agent still lacks.

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 short sentences, front-loaded with the resource and scope, with no filler. The only wasted clause is 'Read-only', which merely repeats the annotations.

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?

Three optional params, no output schema, and rich annotations mean the description needs to cover scope and filtering, which it does. Still missing is any hint of result shape or pagination, but that is a modest gap for a simple list tool.

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 only 33% — 'search' is documented in the schema while 'limit' and 'category' are bare. The description restates that category and search exist as filters but supplies no semantics for either (matching behavior, valid categories, pagination interaction), so it 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?

States a specific verb and resource ('List public community listings on Sellular') plus the two filter axes, which is clear enough to act on. It does not, however, distinguish itself from the very similar sibling list_directory_listings, and the phrase 'community directory' slightly muddies which list is which.

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?

The sentence 'Use to browse products already listed in the community directory' gives a positive usage context, but there is no when-not guidance and no pointer to alternatives such as list_directory_listings or list_product, which an agent would need to choose correctly.

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