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

No annotations are provided, so the description carries full burden for behavioral disclosure. 'Add a new note' implies a write/mutation operation, but it doesn't specify permissions needed, whether it's idempotent, error handling, or what happens on success (e.g., returns an ID). This leaves critical behavioral traits undocumented, making it inadequate for safe invocation.

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 description is very concise—'Add a new note' is a single, straightforward phrase with no wasted words. It's front-loaded and easy to parse. However, it's arguably too brief, bordering on under-specification, which slightly reduces its effectiveness despite the efficiency.

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 tool has 2 required parameters, 0% schema coverage, no annotations, and no output schema, the description is incomplete. It doesn't address parameter meanings, behavioral aspects, or return values, making it insufficient for an agent to understand how to use the tool effectively in context.

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 description coverage is 0%, so the schema provides no parameter details. The description adds no information about the parameters—it doesn't explain what 'name' and 'content' represent, their formats, or constraints. This fails to compensate for the lack of schema documentation, leaving parameters semantically unclear.

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 'Add a new note' states the action (add) and resource (note), making the basic purpose clear. However, it's somewhat vague—it doesn't specify what kind of note (e.g., text note, annotation, comment) or in what context (e.g., to a document, user profile). With no sibling tools, differentiation isn't needed, but the purpose lacks specificity beyond the minimal verb+resource pairing.

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 provides no guidance on when to use this tool—it doesn't mention prerequisites, alternatives, or context for usage. With no sibling tools, there's no need to distinguish from alternatives, but it fails to offer any usage context, such as what system or entity the note is added to, leaving the agent with no hints about appropriate scenarios.

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