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

With no annotations present, the description carries the full behavioral burden. It usefully discloses the authentication requirement (Authorization Bearer), which is real context an agent needs, but it omits pagination behavior, result-size expectations, and whether the listing is read-only or sorted in a particular way.

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 short sentence with zero filler, front-loading the action and the scope before the parenthetical auth note. Every element earns its place.

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-only listing tool with no output schema, the description covers what the tool returns at a conceptual level and flags the auth prerequisite. The remaining gap is minor: no mention of pagination or ordering, but nothing blocks a correct invocation.

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 input schema defines zero parameters, so there is nothing for the description to disambiguate. The baseline for a parameterless tool applies, and the description correctly implies no arguments are needed.

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 states a specific verb (列出), a specific resource (私人筆記), and the scope restriction (目前登入者), which lets an agent distinguish it from the single-note sibling get_note. It does not explicitly name an alternative or clarify how it relates to catalog-wide listing siblings, so it falls short of a 5.

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?

Usage is implied by the phrase 'currently logged-in user's private notes', which tells the agent this is a self-scoped read rather than a lookup by id. However, there is no explicit when-to-use versus when-not-to-use guidance and no named alternative for fetching a single note or notes belonging to other users.

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