vera_rates

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

Discloses cache duration (5-min) and cost ($0.02 USDC via x402). No annotations provided, so description carries behavioral burden. Does not mention auth or rate limits, but adds useful operational details.

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?

Two sentences with no wasted words. Front-loaded with key info: real-time, LATAM, countries, rates, cache, cost.

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?

Provides core purpose, return values, and operational details. However, lacks explanation for signals parameter and return format. With no output schema, more completeness would be beneficial.

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%, so description must compensate. Describes country parameter via listing countries, but signals parameter is not explained. Does not add meaning for signals beyond schema.

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?

Clearly states the tool provides real-time central bank rates for LATAM countries, listing specific countries and rate names. Differentiates from sibling tools which are about sanctions, entity, and context.

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?

Describes the tool's context (LATAM countries, specific rates) but does not explicitly state when to use vs alternatives or provide exclusions. Sibling tools are in different domains, making usage clear by topic.

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