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

Annotations already declare readOnly, idempotent, non-destructive and closed-world, so the safety profile is covered. The description adds the result ordering ('newest first') and the user-scoping, but says nothing about pagination behavior or how the set list is shaped 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?

Three compact sentences, front-loaded with the core action and scope, followed by usage routing and the library-search exclusion. Every sentence carries information with no 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?

For a read-only list tool with no output schema, the description covers scope, ordering, filtering and routing. The only real gap is pagination guidance for skip/limit, which matters given the 12 default and 30 cap.

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 only 33%: 'query' is documented in the schema, while 'skip' and 'limit' are not. The description restates the query filter semantics (title, subject, course code) but does not compensate for the undocumented pagination parameters or explain the 30-item maximum.

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 (List) and resource (authenticated user's own flashcard sets) with a scope qualifier (on uNotes, newest first). It is clearly separable from siblings list_my_quizzes and search_library, which cover different resource types.

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?

Explicitly says to use it for any question about the user's flashcards and adds an exclusion ('The document library search does not cover them'), which routes the agent away from search_library. It does not, however, contrast against list_my_quizzes, the closest sibling.

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