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

Beyond the annotations, the description discloses public visibility, the notification sent to the author, Markdown support, the 1,000-character cap, default per-call confirmation, and owner approval. These are significant behavioral details for a public write operation.

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?

The purpose is front-loaded and most sentences carry useful information. There is minor redundancy between the opening sentence and the following explanation, and the confirmation/approval wording could be tighter.

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?

Given the annotations and fully described two-parameter schema, the description is complete enough to call the tool correctly. It covers visibility, formatting, limits, notification, confirmation, and approval without needing an output schema.

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%, so both parameters are already documented. The description adds useful body semantics by specifying a 1-character minimum and supported Markdown formatting, though it does not add much beyond the schema for note_id.

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 gives a specific verb and resource: replying under a Note or Note reply. It also scopes the action to any Note, yours or anyone's, which distinguishes it from posting a new Note or replying to a comment.

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?

It clearly establishes the context for use: posting a reply under a Note or under an existing Note reply. It does not explicitly name alternatives such as reply_to_comment, but the Note-specific scope gives enough context to select it correctly.

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