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

The readOnlyHint annotation already establishes this is a safe read, so the description is not carrying the full burden. It adds value by describing the shape of returned data (time_log, duration, rate, linked entities) and the underlying endpoint, but says nothing about pagination behavior, default result limits, or ordering despite exposing page/per_page/sort parameters.

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 short sentences, front-loaded with the verb and resource, with the returned-field list second. Nothing is wasted, though the API-endpoint note is of marginal value to an agent.

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 100% schema coverage, readOnlyHint annotations, and no output schema needed, the description supplies enough context to select and invoke it correctly. Only the absence of any when-to-use guidance keeps it from being fully complete.

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% across all 8 parameters, so the schema already documents page, sort, filter, number, status, per_page, client_id and client_status in detail. The description adds no parameter-level meaning beyond that, which is the expected baseline when the schema does the heavy lifting.

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 (List) and resource (tasks / time entries) and even enumerates the returned fields (time_log, duration, rate, linked client/project/invoice), which lets an agent tell it apart from the create_task and list_projects siblings without opening schemas. However, it does not explicitly contrast itself with any sibling by name.

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?

There is no guidance about when to use this tool versus alternatives such as list_projects or create_task, nor any mention of prerequisites or the meaning of the filters. Usage is only implied by the name and verb.

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