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

Annotations already declare readOnlyHint, openWorldHint and destructiveHint=false, so safety is covered. The description adds some real value by disclosing the projected fields (employee, department, type, dates, approval status) and the overlap semantics, plus the GET endpoint. It stops short of stating the default page size or that results span all employees.

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?

A single front-loaded sentence lists the scope, the semantics and the returned fields, followed by the endpoint. Nothing is padding.

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?

With no output schema, the description correctly compensates by enumerating return fields and the overlap rule. It leaves minor gaps an agent might want: whether cancelled/pending requests are included, and whether the result is scoped to all employees or only the caller's team.

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%, so the baseline is 3, but the description adds a genuine semantic: start_date/end_date act as an overlap filter rather than a containment filter, which the schema's 'First day / Last day' wording does not convey. The limit/offset pagination is left entirely to the schema, which already documents it fully.

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?

The description names a specific verb and resource ('All absences ... holiday, sickness, leave'), scopes it to an overlapping date range, and enumerates the fields returned. That is enough for an agent to distinguish it from siblings like tamigo_list_shifts without consulting the schema.

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?

'That overlap a date range' implies the reporting context, but the description never states when to prefer this over tamigo_list_shifts or tamigo_list_employee_details, nor any exclusions or prerequisites. Usage is inferable and nothing more.

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