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

The annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description adds that results include ids and are sorted by name, but it does not mention pagination, permissions, error behavior, or whether results are scoped to existing domains.

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 front-loaded sentence with no filler. It efficiently communicates the verb, resource, domain scope, returned ids, and sort order.

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 one-parameter read-only list tool, the description covers scope and return shape sufficiently for an agent to invoke it. Because there is no output schema, stating that ids are returned and sorted by name is valuable; only minor details such as pagination or empty-result behavior are missing.

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?

There is one parameter, domain_id, and schema description coverage is 100%, so the schema already documents it adequately. The description adds the domain-scoping context but no format or validation details beyond what the schema provides, making the baseline score of 3 appropriate.

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 a specific verb (List), resource (prompt topics), scope (of a domain), and return detail (ids, sorted by name). It clearly distinguishes this read-only enumeration from siblings such as create-prompt-topic, update-prompt-topic, delete-prompt-topic, and move-prompt-to-topic.

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 implies this tool is used to retrieve prompt topics for a given domain, but it does not explicitly state when to use it versus alternatives like list-prompt-filters or list-domains. Usage is understandable from the context but lacks explicit exclusions or prerequisites.

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