list_library_sections

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is known. The description adds the endpoint GET /library/sections/ and the 'Fallback' label, but does not explain what 'fallback' implies, such as response format or limits.

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?

Two short fragments – the description and the endpoint – convey the basic action without wasted words. It is lean, though the 'Fallback' note could be omitted or clarified.

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 zero-parameter read operation with an output schema, the description provides the essential endpoint. Still, the ambiguous 'Fallback' and lack of context about when this variant is preferred leaves the agent with incomplete understanding relative to the many siblings.

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?

The tool has zero parameters, so the schema is empty and the baseline of 4 applies. The description does not need to add parameter semantics.

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 uses a clear imperative ('Get') with a specific resource ('Library Sections'), so an agent knows what it returns. However, the word 'Fallback' is ambiguous and does not differentiate it from siblings like list_library_sections_all or list_library.

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?

No guidance on when to use this tool over the many sibling library-section listing tools. The description does not mention the role of the fallback variant or any exclusions.

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