simplify_trig_expression

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

No annotations are provided, so the description carries full burden. It mentions 'placeholder implementation' which hints at limited functionality but doesn't clarify what that means operationally. It doesn't describe what the tool actually returns (simplified expression, success/failure, error handling), performance characteristics, or limitations of the 'basic' simplification.

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 brief and front-loaded with the core purpose. However, the parenthetical elements '(placeholder implementation)' and '(Domain: trigonometry, Category: identities)' add clutter without providing clear value. The structure could be improved by integrating the domain/category information more naturally or removing redundant elements.

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 no annotations, no output schema, and 0% parameter documentation, the description is inadequate. It doesn't explain what constitutes a valid trigonometric expression, what simplification techniques are applied, what the output looks like, or how this differs from other trigonometric tools. The 'placeholder implementation' note creates uncertainty rather than providing useful context.

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?

With 0% schema description coverage for the single 'expression' parameter, the description provides no additional semantic information. It doesn't specify what format the expression should be in (textual, mathematical notation), what trigonometric functions are supported, or any constraints on the input. The description fails to compensate for the complete lack of schema documentation.

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 the tool performs 'Basic trigonometric expression simplification' which provides a general purpose, but it's vague about scope and methods. It doesn't specify what types of simplifications it performs (e.g., identities, angle reduction, factoring) or what qualifies as 'basic'. The parenthetical '(placeholder implementation)' further obscures the actual functionality.

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?

No guidance is provided about when to use this tool versus the many sibling trigonometric tools (e.g., verify_identity, pythagorean_identity, sum_difference_formulas, double_angle_formulas, half_angle_formulas). The domain/category tags ('Domain: trigonometry, Category: identities') are generic and don't help differentiate this specific simplification tool from other identity-related tools.

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