Read note

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

Annotations already declare readOnlyHint=true, so the description doesn't need to state that it's a read operation. The description adds that it reads 'in full' and uses a slug, which is useful but minimal. No side effects or limitations are mentioned, but the read-only nature is already covered.

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, front-loaded sentence conveys exactly what the tool does without any filler. Every word 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 simple read operation with one parameter and readOnlyHint annotation, this is nearly complete. The description tells the agent the key input and outcome. Lack of an output schema is acceptable because 'in full' implies the entire note. Minor gaps like error handling or not-found behavior are not critical for a straightforward read.

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 100% with a clear description of the slug parameter. The description merely reiterates 'by slug', adding no new semantic detail beyond the schema. Baseline 3 is appropriate since the schema does the heavy lifting.

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 clearly states the verb (read), the resource (a single note), and the scope (in full, by slug). It distinguishes itself from siblings like list_notes (multiple notes) and search_notes (query-based) by specifying 'single note' and the unique identifier 'slug'.

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 description gives clear context: use this tool when you have a slug and want the entire note. However, it does not explicitly mention when not to use it (e.g., for listing or searching) or name alternatives, so it lacks exclusions. Still, the intended use is unambiguous.

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