calculate_rd

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

No annotations exist, so the description carries the full burden. It does disclose a meaningful behavioral trait beyond the schema: quarterly compounding, which determines the actual math and differs from other calculators in the family. It says nothing about whether the result includes a principal/interest breakdown or assumes a fixed rate throughout.

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?

A single compact sentence with the key qualifier front-loaded; nothing is wasted. Brevity here borders on under-specification rather than verbosity, so it is not a flaw of structure.

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 zero-coverage, zero-annotation, three-required-parameter financial calculator, the description is too thin. An output schema exists so return values needn't be explained, but units, rounding, and the handling of non-quarter-aligned month counts are all left unaddressed.

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% and all three parameters (monthly_deposit, annual_rate_pct, months) are undocumented in the schema. The description only indirectly clarifies that annual_rate_pct is a nominal annual rate compounded quarterly; it never states currency, that months may be non-multiples of three, or how partial quarters are handled.

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 names the specific computation - recurring deposit maturity amount - and the compounding convention (quarterly), which is enough to separate it from calculate_fd or calculate_emi. It is a noun phrase rather than a verb+resource statement, but the resource is unambiguous.

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?

There is no explicit guidance on when to pick this over calculate_fd, calculate_sip_returns, or project_sip, nor any stated prerequisites (e.g. that deposits are monthly and fixed). The only cue is the word 'recurring', which the agent must infer means recurring-deposit products.

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