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

Goes well past the readOnlyHint annotation by disclosing non-obvious semantics: hidden amounts are returned as 0 and mean hidden rather than unpaid, isActive marks work whose time/cost still grow, meetings are excluded, and totals span the whole selection. These are exactly the behavioral facts an agent cannot infer from annotations or schema.

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 dense sentences, front-loaded with what the tool returns before moving to filter and response semantics. Every clause carries information, though the second sentence strings together several distinct return-value facts and could be split for easier scanning.

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?

There is no output schema, so the description must carry the return contract, and it does: totals scope, where employees/tasks are resolved, pagination via nextCursor with the same filters, hidden-amount encoding, and isActive meaning. An agent has everything needed to call and 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?

Schema description coverage is 100%, so the schema already documents every parameter in detail, establishing a baseline of 3. The description adds only marginal value, restating the filter dimensions and noting that filters combine (none = all accessible records), without new format or interaction rules beyond the schema.

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: 'Lists worklog (time-tracking) records of tasks and bugs for time and cost reports', with concrete scope notes ('meetings excluded'). It is clearly a distinct capability from any sibling, but it never explicitly names or contrasts a sibling tool, so it stops short of the top tier.

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 implied by the stated purpose ('for time and cost reports') and the enumerable filters, but there is no explicit when-to-use guidance, no when-not-to-use, and no named alternative among the many task/report siblings. Adequate but with a clear gap.

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