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

No annotations are provided, so the description must carry the full burden of behavioral disclosure. It does not state whether the operation is read-only, whether pagination applies, or what the response contains beyond 'comments.' Listing is implicitly read-only, but that is not stated. There is no mention of sorting, limits, or error behavior.

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 description is a single short phrase, but it is under-specified rather than concise. It omits essential operational details, so the brevity is a liability, not a strength. It does not front-load the key action or scope.

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 list tool with no output schema and no annotations, the description should at least clarify the return format, pagination, or typical usage. It only states that comments exist for a channel, leaving the agent without enough context to invoke it correctly. The single parameter is documented, but the overall behavior is incomplete.

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?

The only parameter 'id' is fully described in the schema as 'ID do canal no iptv-org,' so schema coverage is 100%. The description adds no additional meaning about the parameter, such as format or constraints. Baseline of 3 is appropriate since the schema handles the parameter documentation.

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 says 'Community comments about a channel,' which indicates the resource but does not explicitly state the action of listing. It is a noun phrase rather than a verb+resource, so it lacks specificity. It does distinguish from post_comment and delete_comment by focusing on retrieval, but not clearly.

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?

No guidance is provided on when to use this tool versus siblings like post_comment or delete_comment. There is no mention of prerequisites, context, or exclusions. The agent is left to infer that it lists comments based on the name.

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