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

With no annotations provided, the description carries the full burden of disclosing behavior. It only says 'Prompt discarded,' which is ambiguous and fails to explain that the parameters are ignored after a shape check. There is no mention of side effects (or lack thereof), permissions, or output nature, so an agent cannot predict what happens beyond a static template.

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 short, but this is under-specification rather than conciseness. It front-loads the template idea but contains no actionable structure or explanation. The 'Prompt discarded' phrase is unnecessary and does not earn its place.

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?

Despite nine optional parameters and no output schema, the description offers no explanation of what the template looks like, why the parameters exist, or how the tool might be useful. An agent cannot determine when or how to invoke it correctly. The complexity of the schema is not compensated by any descriptive detail.

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 100%, so the baseline is 3. The description adds no meaning beyond the schema; it does not clarify why nine disparate parameters (ref, url, city, feed, etc.) are accepted if they are discarded. It neither reinforces nor contradicts the schema, so it stays at baseline.

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 gives a vague verb-resource pair, but it does not explain what the template contains or how it relates to the tool name. It provides no differentiation from any of the 29 sibling tools, and the phrase 'Prompt discarded' adds confusion rather than clarity.

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?

There is no guidance on when to use this tool versus alternatives. The description does not mention any context, prerequisites, or exclusions, leaving the agent to guess entirely from the name and schema.

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