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

No annotations provided, so the description carries the burden. It adds useful behavioral context: values are scoped to the authenticated user's role, which is a non-obvious access-control detail. However, it doesn't disclose that this is a read-only operation, whether it's cached, or what the return shape is (no output schema exists).

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 concise sentences, front-loaded with the action and resource, then the access-scoping caveat. No wasted words, no redundancy.

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 read-only discovery tool with no output schema and fully documented params, the description is adequate but leaves gaps: it doesn't clarify the relationship to ExportTimeSheetReportTool, nor does it describe the return format (an agent won't know if it gets enum lists, objects, or labels).

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 account_code, from, and to with formats and defaults. Baseline is 3 per the rubric when coverage is high and the description adds no parameter-level syntax or format details.

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 (Lists) and resource (available filters for the timesheet report), and enumerates the filter categories (date range, companies, projects, workers, report layout). It's clear what the tool does, though it doesn't name a sibling to differentiate from — the closest sibling is ExportTimeSheetReportTool, and the description doesn't explicitly contrast with it.

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?

Implied usage — an agent can infer this is a discovery/meta tool to call before ExportTimeSheetReportTool, but the description never states when to use it or that it's a prerequisite/companion to the export tool. No explicit when/when-not guidance.

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