List User Segments

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 covered. The description does add material context the annotations lack — Zendesk restricts the call to Guide admins and Help Center managers and it fails without that role — but it says nothing about ordering, pagination, or limits. That added auth/failure detail is real value, though not rich enough to warrant a top score.

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?

Information is front-loaded: what segments are, then the returned fields, then the id handoff, then the auth caveat. It is dense and largely earns its space, but it runs long with the trailing create_article default-behavior clause appended in the same breath, making it a heavy single block.

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 zero-parameter read tool with no output schema, the description covers purpose, return fields, auth requirement, and downstream id usage. An agent has everything needed to decide to call it and to interpret 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?

The tool takes zero parameters, so there is nothing for the description to disambiguate; baseline 4 applies. The only semantics mentioned (user_segment_id) belong to other tools, not this one's inputs.

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?

Names a specific verb and resource ('List all Help Center user segments'), then explains what a segment actually is — it controls article visibility — and enumerates returned fields (id, name, user type, built-in). This is clearly distinguishable from list_permission_groups, which it explicitly names as the sibling for a different concern.

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?

Gives explicit routing: use this tool's id as user_segment_id in create_article/update_article, use list_permission_groups instead to control edit permissions, and reuse the segment id from get_article or omit it to default to everyone-visible. Both the when-to-use and the alternatives are spelled out.

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