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

Annotations already declare readOnlyHint, idempotentHint, non-destructive, and openWorldHint=false, so the safety profile is fully covered. The description's only added behavioral fact is the newest-first ordering, which is genuinely useful but thin; it says nothing about pagination, default result count, or what happens with the undocumented limit.

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 compact sentence with the ordering constraint front-loaded and zero filler. It is efficiently sized, though the brevity edges toward under-specification rather than pure conciseness.

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 list tool with full annotations but no output schema, the description omits the return shape (what fields a note contains) and pagination/limit behavior. These are moderate gaps an agent would benefit from knowing before invoking.

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 coverage is 67%: the tag filter and api_key are described in the schema, but limit has no description anywhere. The description adds no parameter meaning, so the undocumented limit remains a genuine gap, though the majority of parameters are self-explanatory.

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 ("List your notes") and adds the ordering ("newest first"), which is useful scope information. It distinguishes itself from add_note by implication, but does not explicitly name any sibling or contrast its behavior with them.

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 versus alternatives such as add_note, get_updates, or search-type siblings. There is no mention of prerequisites, pagination context, or conditions that would select this tool over another.

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