get_gold_prices

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

No annotations are provided, so the description carries the full burden. It discloses the return values (buy/sell prices, changes) and default behavior, but does not mention freshness, limitations, or error handling. This is adequate for a simple read operation but not comprehensive.

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 front-loaded with purpose and uses only four concise sentences. Every sentence adds information about scope, returns, defaults, or filtering, with no redundant text.

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 two-parameter read tool without an output schema, the description covers purpose, returns, defaults, and filter options. It lacks explicit details on the response structure, but the mention of buy/sell prices and changes provides sufficient context.

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 coverage is 100%, so the description adds only marginal value by summarizing the filters. The default code list is repeated, but the schema already documents it well, keeping this at baseline.

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 'Get current gold prices' with a specific resource (Vietnamese and international markets) and output details. It distinguishes from sibling 'get_gold_price_history' by emphasizing 'current' prices, and from 'get_gold_price' by showing multi-code default behavior.

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 use for current prices, which distinguishes from the history sibling. However, it does not explicitly name alternatives or provide exclusion criteria, so it falls short of a 5.

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