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

No annotations are provided, so the description carries the full burden. It mentions the tool 'predicts' and returns a string, but lacks critical behavioral details like accuracy, confidence scores, model limitations, rate limits, or error handling. This is insufficient for a prediction tool with zero annotation coverage.

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 moderately concise but could be better structured. It front-loads the purpose but includes an example that might be verbose. Sentences like 'pass through the input as a list of samples' are somewhat redundant. Overall, it's adequate but not optimally efficient.

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 no annotations, no output schema, and low schema coverage, the description is incomplete. It covers basic purpose and a parameter example but misses behavioral traits, usage context, and detailed output explanation. For a prediction tool, this leaves significant gaps in understanding its operation and reliability.

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 description must compensate. It adds value by explaining 'data' as 'employee attributes used for inference' and provides an example payload with specific fields. However, it doesn't fully document all required attributes or their types beyond the example, leaving gaps in parameter understanding.

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's purpose: 'predicts whether an employee will churn or not' with the verb 'predicts' and resource 'employee'. It specifies the input format ('list of samples') and output meaning ('1=churn or 0=no churn'). However, without sibling tools, it cannot demonstrate differentiation, so it doesn't reach the highest score.

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 versus alternatives, prerequisites, or limitations. It only states what the tool does without context for its application, such as when predictions are needed or what data is required beyond the example.

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