calculate_prepayment_savings

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

No annotations provided, so description bears full burden. It mentions output (interest saved, tenure reduction) but does not clarify side effects, permissions, or limitations. For a calculator, read-only behavior is implied but not explicit.

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?

Extremely concise, two sentences with no fluff. Front-loaded with purpose and key outputs.

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?

With 6 parameters and no schema descriptions, the description is insufficient. Does not explain how to specify prepayment options or interpret results. Lacks details on output schema despite its existence.

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%, yet the description only names generic terms like 'principal, annual rate, tenure years' without explaining each parameter's meaning or units. Does not map 'extra EMI or lump sum' to specific parameters like monthly_prepayment or lump_sum_prepayment.

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?

Description clearly states the tool calculates savings from loan prepayment, showing interest saved and tenure reduction. It mentions extra EMI or lump sum, which distinguishes it from related siblings like compare_loans or loan_amortization.

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 explicit when-to-use or when-not-to-use guidance. Does not differentiate from alternatives like invest_or_prepay_loan. Purpose is clear, but lacks directional context.

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