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

With no annotations, the description carries the behavioral disclosure burden. It usefully reveals that the tool provides only a 'light keyword stance hint' and that final stance synthesis is left to the host. However, it does not explain query matching behavior, filtering semantics, pagination, or any limitations beyond what the schema already shows.

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 and front-loaded with the core action, followed by a clear division of labor between tool and host. Every sentence contributes; there is no redundant filler. It could include more behavioral guidance, but as a concise statement it is well structured.

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?

The description gives the essential purpose and the presence of an output schema helps cover return-value expectations. Still, since/until parameters are left semantically vague)Skip and no sibling tool is mentioned for routing. The definition is minimally viable for a retrieval tool but leaves the agent to infer several operational details.

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 60%, with query and limit documented in the schema and min_depth given a meaningful hint. The description adds no extra parameter detail)Skip that compensates for the undocumented since/until fields, so the agent still has to infer their format and behavior from names and context.

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 clearly states that the tool returns HN comments on a topic and is intended for host-side attitude synthesis. It also distinguishes the tool's role by saying the HOST synthesizes support/oppose/mixed, which helps separate it from analysis tools. It does not explicitly contrast with hn_search or hn_topic_painpoints, so it stops short of full sibling differentiation.

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 description communicates when to use it: when you need HN comments plus a light stance hint for the host to synthesize an attitude. It does not say when not to use it or name alternatives such as hn_search, hn_topic_painpoints, or hn_ideas. The intended usage is implied but not made explicit.

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