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

With no annotations, the description carries the full burden of disclosing behavior. It notes 'Prompt discarded' but gives no indication of what happens to the nine parameters, whether any validation occurs, or what the output structure is. The schema descriptions hint at checks, but the description itself is silent on these behaviors.

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, which is efficient, but it is under-specified. It lacks essential information about the template and parameter handling, making it more a placeholder than a useful definition. Under-specification is not 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?

For a tool with nine parameters, no output schema, and no annotations, the description is extremely incomplete. It does not explain what the template looks like, why the parameters exist, what the tool actually does with them, or what the return value contains. An agent cannot call this tool correctly based on this description alone.

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 schema provides 100% coverage with detailed descriptions for each parameter, so the baseline is 3. The tool description adds no meaning beyond the schema and does not explain why a thinking template tool accepts parameters like city, URL, or zone, so it fails to compensate for the semantic disconnect.

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 it returns a three-step thinking template, which is a specific verb and resource, but the template's content and purpose are vague. It does not differentiate this tool from the many siblings, several of which also return structured output, so an agent cannot tell what makes this tool unique.

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 offers no guidance on when to use this tool versus its 27 siblings. It mentions 'Prompt discarded' but does not explain any conditions or alternative tools, leaving the agent to guess based on the name alone.

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