get_stablecoin_premium

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

Annotations provide readOnlyHint (safe read) and openWorldHint (variable response). Description adds interpretive context (capital flow direction) beyond annotations, but does not mention update frequency or data source.

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?

Three concise sentences, each adding value: purpose, interpretation, and differentiation. No wasted words.

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?

With no parameters, output schema present, and clear interpretation provided, the description is fully adequate for an agent to understand and use the tool.

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?

No parameters defined, so baseline is 4. Description does not need to add parameter details since schema covers 100%.

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?

Description clearly states the tool gets USDT/USDC premium on Korean exchanges vs official rate, with a specific verb (Get) and resource (stablecoin premium). It explicitly distinguishes from sibling get_kimchi_premium by noting it is separate.

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?

Description explains the meaning of positive/negative premium and positions it as a key indicator of Korean market fund flow. It implies this tool is for stablecoin premium rather than overall kimchi premium, but lacks explicit guidance on when to use vs alternatives.

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