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

With no annotations, the description carries the full burden and does disclose important limits: the result is unsigned, the service does not act on watches, and it never signs for the user. It still omits side effects, permissions, and return-shape behavior beyond the unsigned-template note.

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 short and front-loads the draft/not-served status before the behavior. The internal 'GO D8' token is unexplained, but otherwise there is little wasted text.

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 five-parameter tool with no annotations, no output schema, and no schema descriptions, the description is far from complete. It provides useful caveats about signing and availability but does not give enough parameter or return context for an agent to invoke it correctly.

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?

There are five parameters with 0% schema description coverage, and the description does not explain any of them. 'Price/stock changes' loosely hints at max_price or in_stock, but gtin, note, and domain are entirely undocumented.

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 states a specific return artifact: an unsigned kind 420 watch template for price/stock changes. However, 'kind 420' is unexplained jargon, and the draft/not-served framing leaves the practical purpose ambiguous for an agent unfamiliar with the domain.

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 notes that the tool is a draft and not served yet and that KlickyMart does not act on watches, which implies it should not be relied on. But it gives no explicit when-to-use guidance and does not point to any sibling alternative.

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