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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered. The description adds no behavior of its own beyond a schema-version tag and a compliance disclaimer; it says nothing about result ordering, pagination or volume limits for an unbounded list operation.

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, front-loaded fragments with no filler; the resource is stated before the filters. The trailing "Education only, not financial advice" is a compliance note rather than tool guidance, but it is brief enough not to obscure the operative content.

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 zero required parameters, full schema coverage and rich annotations, the essentials are present. However, there is no output schema, so the description would ideally sketch what a listing record contains and whether the list is bounded or paginated — neither is addressed.

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 100%, with each parameter documented including matching semantics and the "omit for all" default. The description only repeats the three parameter names (q, category, tag) without adding matching or format detail, so the schema does the work and baseline 3 applies.

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 curated directory listings") and names the filterable fields, so the agent knows exactly what is returned. It does not, however, differentiate itself from the nearby search_directory sibling, which reads similarly at a glance.

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?

Mentioning the optional filters implies the two usage modes (omit everything to enumerate, supply filters to narrow), but nothing is said about when this should be chosen over search_directory or search_content. Usage is inferable rather than stated.

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