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

Annotations already declare readOnlyHint and openWorldHint, so the safety profile is covered; the description contributes the non-obvious pagination contract (feed the previous reply's next_last_seen_id back as last_seen_id), which is real behavioral detail an agent would otherwise have to infer. It stops short of stating result ordering or whether an empty result is normal, but adds meaningful context beyond the annotations.

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?

Two sentences, no filler: the resource and returned fields come first, followed by the operational pagination rule. Every clause carries information an agent needs.

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 read-only list tool with no output schema and fully documented parameters, the description covers what is returned (country, state, default flag) and how to page, which is enough to call it correctly. Minor gaps remain around ordering and the meaning of the default flag, but nothing blocking.

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 both parameters are already documented, including the next_last_seen_id-to-last_seen_id relationship, so the description largely restates the schema. The one-line paging hint reinforces the correct loop but adds no syntax or meaning the schema lacks — baseline 3.

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 the company's public-holiday policies') and enumerates the key fields returned (country, state, default flag), which lets an agent separate it from the singular talenox_get_holiday_policy. It does not, however, explicitly distinguish it from the nearby talenox_list_company_holidays sibling, which an agent could plausibly confuse with policies.

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 reach for this versus talenox_get_holiday_policy or talenox_list_company_holidays. The only explicit guidance is procedural pagination advice, not selection guidance.

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