Get bus station calendar

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

No annotations are provided, so the description carries the full burden. It does disclose the API's future-window limit, but it does not state that this is a read-only operation, mention authentication/authorization needs, or describe any side effects or error behavior. For a tool with no structured safety hints, this is a significant 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?

The description is exactly two sentences with no filler. The primary purpose is front-loaded, and the second sentence adds a useful constraint about the API window. Every word earns its place.

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-style tool with a clear schema and no output schema, the description covers the core purpose but omits behavioral details (response shape, how parameters combine, error conditions) that an agent might need. The absence of annotations and output schema increases the burden, yet the description is not severely deficient.

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%, and each parameter (destinationId, from, to, days) has a meaningful schema description. The tool description adds no parameter-specific meaning beyond the schema, so the baseline of 3 applies without needing compensation.

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 states a specific action ('Get') on a specific resource ('bus station race availability') qualified by date and destination. This is clear and distinguishable from many siblings, though it does not explicitly contrast with the closely named 'get_bus_station_races' tool.

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?

There is no statement about when to use this tool versus alternatives like get_bus_station_races or search_bus_station_destinations. The only guidance is an API limitation on the future window, which is a constraint rather than a usage selector. The agent must infer when this tool is appropriate.

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