list_users_reactions_comments

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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint false, so the safety profile is clear. However, the description adds little behavioral context; it does not describe what the response contains, any pagination defaults, or any other side effects. It only restates the endpoint and parameter names.

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 concise, front-loads the purpose, and lists parameters in a clean format. It is well-structured with minimal fluff.

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 simple GET with optional params, the description is incomplete because it does not clarify the scope (whose reactions) or provide any usage context. It relies on the name to infer the user's reactions, but the description itself is ambiguous. The presence of an output schema partially compensates for return-value explanation, but the core purpose is under-specified.

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 description provides basic explanations for all three parameters, which is helpful given the schema has no descriptions. However, the explanations are terse and lack depth; for example, 'extended' is vague, and no details on allowed values or defaults are given beyond 'all' for limit.

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 'Get comment reactions' which is a verb and resource, but it is vague and does not specify the scope (e.g., current user's reactions) or differentiate from siblings like get_comments_by_id_reactions which also retrieves comment reactions for a specific comment. The name is more descriptive than the description.

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?

There is no guidance on when to use this tool versus alternatives. It merely states the endpoint and parameters without any context on when it is appropriate, such as retrieving the current user's reactions across comments. No exclusions or alternatives are mentioned.

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