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

Annotations already declare readOnlyHint, idempotentHint, and non-destructive behavior, so the safety profile is covered. The description adds only 'creator required,' which is ambiguous and may mislead about what the tool demands. No rate-limit, error, or return-shape context is provided beyond what annotations carry.

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 front-loaded sentence with the alias relationship and lookup semantics up front. Nothing is wasted, though the trailing clause is the weakest part.

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 simple read-only single-id lookup with rich annotations, the description covers identity, purpose, and alias status. The only gap is the unexplained 'creator required' phrase, which leaves an agent unsure whether extra input or returned fields are implied.

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% with one required parameter, so the description should compensate. 'By id' confirms id is a lookup key, but 'with creator required' is unclear and appears to reference something not present in the schema, adding confusion rather than clarity.

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 and resource ('return one catalog tool by id') and explicitly positions itself as a legacy alias of get_classroom_tool, so an agent can tell it apart from the three classroom-tool siblings without opening schemas.

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?

Calling itself a 'legacy alias' of get_classroom_tool implies the sibling is the preferred entry point, which is useful routing context. It stops short of an explicit 'prefer get_classroom_tool' directive or any note on when this alias should still be used.

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