sin

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

No annotations are provided, but this is a stateless pure math function with no auth, mutation, or side-effect concerns to disclose. The description adds the radians convention but no behavioral context beyond that.

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?

Two short sentences with no filler; the core purpose is front-loaded and the batch_calc pointer comes second. Every clause earns 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?

For a one-parameter pure function with a self-evident numeric return there is little an agent could be missing. No output schema exists, but the result is unambiguous, so the brief description suffices.

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 coverage is 100% and the single parameter is fully documented as radians in the schema. The description's 'in radians' restates schema content rather than adding format or range detail, so baseline 3 applies.

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?

States a specific verb ('Calculates') and resource ('sine of a number in radians'), which is unambiguous against siblings like cos, tan, and arcsin. It also names the sibling batch_calc for a related need.

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?

Explicitly routes multi-operation or chained work to batch_calc, giving a concrete alternative with a selecting condition. It does not state the inverse condition (use this for a single operation), but that is clearly implied.

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