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

Annotations already declare readOnlyHint=true and idempotentHint=true, making the read-only nature clear. The description adds context about inputs (dates, preferences, conditions) and output (suggests best resorts), but does not reveal additional behavioral traits such as how conditions are evaluated or whether the tool accesses real-time data. It adds moderate value beyond annotations.

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?

The description is two sentences long, with the first sentence stating the core function and the second providing a slight elaboration. It is front-loaded and concise, though the second sentence is somewhat redundant with the first, making it slightly less efficient.

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?

Given the existence of an output schema and full input schema coverage, the description provides adequate high-level context. However, with many sibling tools, the description misses the opportunity to clarify the tool's unique value proposition (e.g., it recommends resorts based on conditions, but doesn't distinguish from find_powder_trips). It is complete enough for basic use but lacks depth for distinguishing among alternatives.

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. The description reiterates that the tool uses 'dates, preferences, and conditions,' which aligns with the schema parameters. However, it does not add meaning beyond the schema's own detailed parameter descriptions. The description is consistent but not enhancing.

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 uses the specific verb 'Get' and the resource 'ski trip recommendations', and mentions 'best resorts for a given time period.' It clearly states the tool's purpose of providing recommendations based on dates, preferences, and conditions. However, it does not explicitly differentiate from sibling tools like find_powder_trips or compare_resorts, which could overlap.

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 description offers no guidance on when to use this tool versus alternatives. It does not specify when not to use it, nor does it mention prerequisites or limitations. The tool's relationship to siblings like find_powder_trips or compare_resorts is unaddressed, leaving the agent to infer usage context.

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