emi_calc

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

No annotations are provided, so the description must carry the full burden. It discloses a cost of $0.001 USDC via x402, but says nothing about what the tool does, what inputs it needs, what output to expect, or any side effects. The cost information is useful but insufficient for behavioral transparency.

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 short, but the first sentence 'emi calc — Finance & Math tool' does not earn its place as it adds no specific information. The second sentence about cost is clear, but overall the brevity is under-specification rather than efficient communication.

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 finance calculation tool with no annotations, no output schema, and generic input schema, the description is completely inadequate. It omits the purpose, required parameters, output format, and any usage context needed to invoke the tool correctly.

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 input schema contains only a generic 'params' object with no actual parameter names or types, and the description does not compensate by listing expected fields like principal, interest rate, or tenure. Despite the 100% schema description coverage, the coverage is superficial and gives no real semantic meaning.

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 'emi calc — Finance & Math tool' merely restates the tool name and adds a generic category. It does not specify that the tool calculates Equated Monthly Installments or any other specific behavior, so it fails to distinguish from sibling finance tools like loan_calculator or mortgage_calculator.

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. There is no mention of use cases, prerequisites, or exclusions, and the sibling tools include several finance calculators that could be confused with this one.

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