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

Annotations already declare readOnly, idempotent, non-destructive, and closed-world behavior, so the safety profile is covered. The description adds genuine value by naming the returned fields (slug, title, description, tags, url), which matters because there is no output schema. It says nothing about ordering, pagination, or result volume, leaving those behavioral traits undisclosed.

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, front-loaded with the operation and the payload shape, with no wasted phrasing. The trailing 'Education only, not financial advice' is compliance framing rather than tool mechanics; it is brief enough not to be harmful but only marginally 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 full annotation coverage, the definition supplies the one thing structured fields do not: the shape of each returned note, compensating for the absent output schema. It falls short of complete only in not indicating result size, ordering, or whether all notes are returned at once.

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 takes zero parameters, so there is nothing for the description to disambiguate beyond what the empty schema already shows. Baseline for a parameterless tool applies.

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 educational notes') and even enumerates the item fields returned, so the agent knows exactly what it gets back. It does not, however, distinguish itself from nearby siblings such as get_note, list_guides, or list_pillars, which an agent must infer.

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?

There is no when-to-use guidance, no mention of when to prefer this over get_note (single note) or list_guides/list_pillars, and no stated prerequisites. The only added sentence is a compliance disclaimer, not selection guidance, so the agent is left to infer usage from the name alone.

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