calculate_rental_yield

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

With no annotations provided, the description carries the full burden for behavioral disclosure. It states the tool calculates yields, implying a read-only computation, but does not explicitly confirm no side effects or mention any constraints. This is adequate for a simple calculator but minimal.

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 concise, with two efficient sentences: one stating the purpose and one providing a helpful cross-reference. No redundant or unnecessary information.

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 the tool's simplicity and the presence of an output schema, the description is largely complete. It explains the purpose and hints at related tools. However, it could be more explicit about the difference between this tool and its specific gross/net siblings to avoid confusion.

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 has 100% description coverage, so baseline is 3. The description adds no extra parameter details beyond what the schema provides, such as the meaning of gross vs net yield or how they are derived from the parameters.

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 clearly states the tool calculates both gross and net rental yield for real estate investments. It is specific but does not explicitly differentiate from sibling tools like calculate_rental_yield_gross and calculate_rental_yield_net, which may cause ambiguity.

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?

The description provides no guidance on when to use this tool versus alternatives. It only mentions a cross-reference to list_bundles for related calculators, but does not explain when to choose this combined calculation over the individual gross/net tools.

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