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

No annotations are provided, and the description merely restates the tool's name. It does not disclose any behavioral traits such as precision, input range, or error handling. For a mathematical conversion, this is minimal but acceptable for a simple function.

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, front-loaded sentence with no wasted words. It is appropriately concise for a trivial conversion, though it could include a brief note on the return value.

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, the description is largely complete. An output schema exists, so return values are documented elsewhere. The lack of usage alternatives or edge cases does not detract significantly.

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 description adds no meaning beyond the schema's parameter description ('Angle in degrees'). Schema coverage is 100%, so baseline 3 applies. No additional value is provided.

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 'Convert degrees to radians' is a specific verb-resource pair that clearly states the conversion direction. It distinguishes itself from the sibling tool 'rad_to_deg' by naming the input unit.

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 like 'rad_to_deg'. However, the usage is self-evident: use when you have degrees and need radians. Implied context is sufficient but not explicit.

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