get_timetable

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. 'Fetch' implies a read-only operation, and the description adds useful detail about returned lesson fields and change types (cancellations, substitutions, room swaps), but it omits permissions, authentication context, and any rate-limit or error behavior.

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 front-loaded with purpose and return content, then uses a compact Args section for parameters. Every sentence and argument line adds useful information without repetition or filler.

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?

The definition is adequate for a simple two-parameter read tool and benefits from an output schema, so return values needn't be fully explained. However, with ten sibling tools, the description does not disambiguate from get_today, get_tomorrow, or get_class_timetable, leaving an important selection gap.

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 0%, so the description must compensate entirely. It documents both parameters with format (YYYY-MM-DD) and defaults (today; start + 4 days), adding exactly the semantics the schema lacks.

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 clearly states a specific verb 'Fetch' and resource 'the student's timetable for a date range,' and it enumerates the returned lesson fields and change types. However, it does not differentiate this tool from siblings like get_today, get_tomorrow, or get_class_timetable, which likely handle narrower or class-specific cases.

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 gives no explicit guidance on when to use this tool versus alternatives such as get_today, get_tomorrow, or get_class_timetable. The date-range defaults imply a multi-day fetch, but the agent receives no when-to-use or when-not-to-use instructions.

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