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

The description adds "This cannot be undone," which reinforces the destructive hint with plain-language consequences. It does not go beyond the annotations in any other way: nothing about required permissions, side effects on related entities, or what happens on repeat calls despite idempotentHint=true.

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 sentences, both front-loaded and information-dense, with the destructive consequence placed immediately after the action. No filler or repetition.

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 two-parameter delete, the annotations already declare destructiveness and idempotency, and the description covers irreversibility and ID sourcing. The missing explanation of userBookId is the main completeness gap, and there is no output schema to compensate.

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 carries the full burden, yet it only explains where noteId comes from and says nothing about userBookId, which is also required. One of two parameters is left completely undocumented in both schema and description.

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 ("Deletes one note") and constrains scope to a single note, which separates it from bulk or shelf operations. It does not explicitly contrast with the nearby delete_highlight or edit_note siblings, but the resource noun is unambiguous.

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 parenthetical "noteId from list_notes" gives concrete guidance on how to obtain the required identifier, which is genuinely useful. However, there is no statement of when to prefer edit_note or how this differs from delete_highlight, so the guidance is implied rather than explicit.

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