get_forex_quote

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

The description indicates 'current top-of-book' implying a real-time snapshot, which is a key behavioral trait. No annotations are provided, so the description carries the burden, but it lacks details on side effects, authentication, or rate limits. The return structure is covered by the output schema.

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 very short and front-loaded with the core purpose. It is efficient, but could potentially include slightly more detail (e.g., supported formats) without becoming verbose.

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?

Given the tool's simplicity (single parameter, clear output schema), the description provides sufficient context. It states what the tool returns (current top-of-book quote) and the parameter meaning. The output schema covers the return structure, so no additional return detail is needed.

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 description adds value beyond the raw schema by providing an example format (eurusd) for the ticker parameter. However, no explicit description of the parameter format or constraints is given, and schema coverage is 0%.

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 the tool gets the current top-of-book forex quote for a currency pair. It specifies the resource (forex quote) and action (get). However, it does not explicitly distinguish from siblings like get_forex_prices, which may provide historical data.

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?

No guidance is provided on when to use this tool versus alternatives, nor are any prerequisites or when-not-to-use scenarios mentioned. The description only explains what the tool does, not its appropriate context.

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