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

Annotations already cover the read-only, non-destructive safety profile, so the description's added value is real: it names the returned fields (type title, times, hours, vacation days, confirmation flag), states the 25-per-page page size, and prints the underlying GET /absences endpoint. It omits empty-result and pagination-continuation behavior, which is the only remaining gap.

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?

Three compact sentences with no filler: purpose and scope first, then return contents, then pagination and endpoint. Every clause carries information the 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 paginated list with no output schema, the description supplies the return shape and page size, which is what an agent needs to decide relevance and how to page. Only edge-case behavior (no matches, date-range validation) is left implicit.

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 all five parameters (including date format and next_page chaining) are already documented in the schema. The description only restates that user_id/location_id are optional filters and the range is inclusive between two days, adding little syntax or semantics beyond the structured fields.

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 ("List absences") plus the defining scope ("fall between two dates"), and parenthesizes concrete record types (vacation, sick leave) to disambiguate the resource. An agent can immediately tell this is a ranged collection read, distinct from papershift_get_absence or papershift_create_absence.

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?

Gives clear usage context: a required two-date range, with optional narrowing by employee or location, which tells the agent exactly what a valid call looks like. It does not explicitly exclude alternatives (e.g. "use papershift_get_absence for a single record"), so it stops short of the top band.

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