savings_goal_calc

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It merely restates the calculation purpose without revealing assumptions (e.g., compounding frequency, rounding), edge cases, or limitations. This is insufficient for a financial calculation tool.

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 one sentence followed by a concise parameter list. Every element is necessary, and no information is wasted. It is structured effectively for quick scanning.

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 that an output schema exists (though not shown in detail), the description does not need to explain return values. However, it omits mentioning the formula or assumptions (e.g., compound interest formula) and does not specify that the result is a monthly payment amount. It is minimally complete but could clarify the output semantics.

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 meaning beyond the schema by providing examples (e.g., 'Annual interest rate (e.g. 3.0 for 3%)') and clarifying default behavior ('initial savings amount (default: 0)'). Since schema description coverage is 0%, this addition is valuable.

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 begins with 'Calculate monthly savings needed to reach a financial goal,' using a specific verb and resource. It clearly distinguishes this tool from many sibling financial calculators (e.g., loan_calculator, mortgage_calculator) by focusing on savings goals.

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 on when to use this tool versus alternatives like compound_interest, loan_calculator, or investment_calculator. It does not mention scenarios where this tool is appropriate or should be avoided.

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