get_skatteetaten_renter

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

With no annotations provided, the description carries the full burden. It discloses the key behavioral trait that no authentication is required. It does not, however, mention the return format, whether rates are percentages or decimals, or any update frequency, leaving moderate gaps in 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 two concise sentences with no filler. The first states the function, the second provides the authentication requirement. Every word contributes value, and it is front-loaded with the core purpose.

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 parameterless, read-only rates lookup, the description covers the essential facts: what data is returned and the access requirement. It doesn't specify response structure or effective dates, but given the simplicity and lack of output schema, this is a minor omission.

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 tool has zero parameters, so the schema is entirely complete by definition. The description correctly avoids mentioning parameters, and the baseline for zero-parameter tools is met.

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 uses the specific verb 'Get' and identifies the exact resource: Skatteetaten's current interest rates for underpayment, overpayment, and late payment. This clearly distinguishes it from sibling tools like get_skattesatser and get_mva_satser, which focus on tax rates rather than interest rates.

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 implies usage whenever interest rates are needed and notes that no authentication is required, which is a useful prerequisite. However, it does not explicitly mention alternative tools or when not to use this tool, leaving the agent to infer context from the sibling list.

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