convert_currency_latest

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

Annotations already indicate readOnlyHint=true and openWorldHint=true. The description adds little beyond 'using the latest exchange rates', missing details like rate source, update frequency, or that it returns a conversion result rather than rates.

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 a single, well-structured sentence of 12 words with no redundancy. It is front-loaded and concise.

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 simple tool with 3 well-documented parameters and informative annotations, the description is sufficient. It could optionally mention the output format, but the tool's purpose is fully understandable.

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?

All three parameters (amount, from_currency, to_currency) have clear descriptions and enums in the input schema, achieving 100% coverage. The main description adds no additional semantic value beyond what the schema already provides.

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 'Converts an amount from one currency to another using the latest exchange rates.' clearly states the action (converts), resource (amount, currencies), and timing (latest rates). It distinguishes from siblings like 'convert_currency_specific_date' by emphasizing 'latest'.

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 for current conversions but does not explicitly state when to use this tool over alternatives like 'convert_currency_specific_date' or 'get_latest_exchange_rates'. Context is minimally inferred from the name.

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