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

Annotations already declare readOnlyHint and openWorldHint, so the safety profile is covered. The description adds genuinely useful context beyond that: the paging protocol (pass next_last_seen_id as last_seen_id) and the note that the underlying Talenox leave API is in beta, which flags possible instability.

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 short sentences, front-loaded with scope, then filters, then paging mechanics. Nothing is padded and no sentence duplicates another.

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 a fully documented 9-parameter schema and no output schema, the description covers scope, filters, and pagination adequately. It stops short of defining precisely what 'overlap' means (any day of the application intersecting the range) or the default ordering, which would help an agent interpret results.

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 every parameter including limit bounds, enums, and last_seen_id already carries its own description. The description restates the filter dimensions and repeats the pagination hint that the schema's last_seen_id field already documents, adding little net new meaning. Baseline 3 applies.

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?

A specific verb and resource with scope: 'List leave applications that overlap a date range' plus the filter dimensions. It is clearly distinguishable from talenox_get_leave_application by the plural list framing, though it never names that sibling explicitly.

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?

The overlap semantics and filter dimensions imply when to reach for this tool, and the pagination sentence tells the agent how to continue a result set. There is no explicit guidance on when to prefer this over talenox_get_leave_application or the approve/reject siblings, so usage is implied rather than stated.

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