forex

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

The description discloses the comma-separated list format for the indicators parameter, which is a behavioral trait beyond the schema. However, it does not mention any side effects, error conditions, or what exactly the response contains (beyond 'rates'), and there are no annotations to fill that gap.

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 concise, using only two sentences with no redundant or fluff content. It front-loads the core purpose and then adds a necessary clarification about parameter formatting.

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 lack of annotations and the presence of 5 parameters (including required ones), the description is incomplete. It omits date formats, currency code conventions, and any distinction from the sibling 'indicator_query' tool, which is a significant gap for practical use.

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?

With zero schema descriptions, the description must compensate by explaining parameters. It only explains the 'indicators' parameter, leaving base, quote, start_date, and end_date unexplained. The phrase 'currency pair' is too vague to clarify the required base/quote parameters.

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 verb 'Get' and the resource 'FX spot rates', and specifies the optional addition of technical indicators. It is distinct from sibling tools like commodities and indicator_query by focusing specifically on currency pairs.

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 its use for retrieving forex spot rates, but it does not explicitly contrast with sibling tools or state when to choose this over indicator_query or others. It offers no direct 'use this when' guidance, only an implicit purpose.

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