Personal Final Exam Calendar

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

Annotations already declare readOnly, idempotent, non-destructive and openWorld, so the safety profile is covered. The description contributes the auth context ('signed-in student's') and the fact that registered courses are included, but says nothing about filtering behavior or data freshness beyond that.

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 efficient sentence with the key scope qualifier front-loaded; nothing is wasted, though it is arguably under-specified rather than maximally tight.

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?

An output schema exists, so return values need not be described. However, with 0% parameter coverage the description leaves the two optional filters entirely unexplained, which is a meaningful gap for an agent trying to call the tool correctly.

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% and neither 'course' nor 'semester' is mentioned in the description. With two undocumented, optional filter parameters, the description fails to compensate for the schema gap by explaining what they filter or what happens when omitted.

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 ('Read') and resource ('official OBS final calendar and registered courses') scoped to the signed-in student. The word 'personal'/'signed-in' implicitly separates it from get_public_exam_schedule and archive_exam_schedule, though no sibling is named 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?

Usage is implied by 'signed-in student's' (i.e., use this for your own personal calendar rather than a public one), but there is no explicit when-to-use or when-not-to-use guidance and no alternatives named among the many exam/schedule siblings. An agent must infer the routing.

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