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

No annotations are provided, so the description carries the burden. It does signal that the tool both finds the longest combination and identifies the specific leave days to request, which is helpful behavior beyond the schema. However, it does not state that this is a non-mutating computation or describe the shape of the result.

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 compact sentence, front-loaded with a bracketed topic tag followed by the operation and the output. No filler and no repetition.

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 one-parameter computation with no output schema, the description should say what comes back (a ranked set of date ranges plus the recommended leave days); it only gestures at this. Adequate to invoke the tool correctly, but the return shape must be discovered by calling it.

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% and the single parameter already documents the 1-10 range, so the description's 'input the number of leave days you can take' is largely redundant. Baseline 3 applies when the schema does the work.

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: given a number of leave days, compute the longest 2027 consecutive-holiday combination and which days to take off. The scope is clear and distinguishable from travel__get_2027_long_weekends, though it never names that sibling to sharpen the boundary.

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?

Usage is implied by the input contract (you supply leave days, you get a plan), but there is no explicit when-to-use statement, no exclusion, and no pointer to the related holiday-listing tool the agent could easily confuse this with.

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