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

With no annotations, the description carries the full burden. It claims 'real-time' data and 'precise, up-to-the-minute insights', but does not disclose limitations, data range, update frequency, or response format. The phrase 'real-time' is a behavioral claim but lacks supporting detail, so the description adds little beyond the name.

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 two sentences and appropriately sized, but the second sentence ('Track short-term price movements...') is somewhat generic and adds minimal substantive value. The key information is front-loaded in the first sentence, making it efficient but not maximally informative.

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 low complexity (3 parameters, no output schema) and high schema coverage, the description is adequate but not complete. It does not explain the return data structure, whether historical data is available, or any timezone/format nuances, which are relevant for an intraday data tool. This is a clear gap in contextual completeness.

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 100%, so the schema already documents all three parameters. The description does not add any extra meaning beyond the schema, such as value formats or relationships between 'from' and 'to' dates. Baseline of 3 applies since schema covers the 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 tool's purpose: 'Access real-time 1-minute intraday forex data' with a specific verb and resource, and explicitly mentions the 1-minute interval, distinguishing it from sibling tools like getForex1HourData and getForex5MinuteData.

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 usage for tracking short-term price movements and up-to-the-minute insights, providing clear context on when to use this 1-minute data tool. However, it does not explicitly mention alternatives or situations where longer intervals would be preferable, so it lacks exclusions.

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