list_price_watches

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

No annotations are provided, so the description carries full responsibility for behavioral disclosure. It indicates a read-only list operation but does not explicitly state that it does not modify data, nor does it mention pagination, sorting, or what happens if no watches exist. The phrase 'list all' implies read-only, but the description lacks explicit behavioral context.

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 a single sentence that states the action, resource, and a key detail (most recent price). It is front-loaded and contains no fluff or repetition, earning a top score for conciseness.

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's simplicity (no parameters, no output schema), the description adequately covers its function. It specifies what is returned (watches with most recent price). However, a short clarification about the output being a list and the absence of filters would improve completeness, especially since sibling tools like get_price_history might cause confusion.

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 has zero parameters, and the schema coverage is 100% (vacuously). The description does not need to elaborate on parameter semantics, as the schema already defines an empty parameter set. The baseline of 4 for zero-parameter tools 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?

The description clearly states the tool lists all saved price watches and includes their most recent recorded price. This distinguishes it from sibling tools like track_price (creates watches) and get_price_history (retrieves history for a specific watch), as it operates on the collection of watches.

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 no explicit guidance on when to use this tool versus alternatives. It simply states what it does, leaving the agent to infer that this is for viewing all saved watches. There is no mention of exclusions, scenarios, or alternatives like get_price_history for individual watch details.

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