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

Annotations already declare readOnlyHint=true, destructiveHint=false, openWorldHint=false, so the safety profile is fully covered elsewhere. The description adds the meaningful qualifier "public" (only publicly visible boards are returned) but says nothing about pagination, result caps, or ordering of the returned list.

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?

A single front-loaded sentence whose parenthetical is purely informative — the resource, scope, and returned fields all arrive immediately with zero filler.

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?

With an output schema present, return values need no explanation, and annotations carry the safety profile; the description covers the resource and its scope. The remaining gap is pagination/result-size behavior for what could be a long board list, which matters slightly given how little the single optional param constrains the result.

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 the single optional parameter (parent) is documented in the schema itself, so the baseline applies. The description adds no filtering semantics of its own — it never mentions that results can be narrowed by parent forum id.

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 pairs a specific verb and resource ("List public forum boards") and even enumerates the returned fields, so the operation is unmistakable. No sibling differentiation is offered, but none of the listed siblings (convert_currency, weather, visa_info, etc.) overlap with board listing, so that omission costs little.

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?

Usage is only implied by the verb "List" — there is no statement of when to call this versus another tool, no prerequisite, and no note about whether the call is scoped or full-enumeration. For a simple list endpoint that is acceptable, but nothing actively guides the agent.

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