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

No annotations are present, so description carries full burden. It adds real-time/up-to-date framing and mentions price changes, but lacks detail on response format, delay/availability, or error behavior. For a simple read-only quote tool this is minimal but not misleading.

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?

Two sentences, front-loaded with the core action. The second sentence partially restates the first but adds the 'monitor market movements' purpose; overall no wasted content.

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 output schema and no annotations, the description should clarify return value shape and distinguish from similar siblings like getForexQuotes, getForexShortQuote, and getForexBatchQuotes. It does neither, leaving the agent to guess whether this is the single-quote variant and what the response contains.

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 single 'symbol' parameter is already fully documented in the schema with example 'EURUSD'. Description adds no additional parameter semantics beyond the term 'currency pairs', so baseline 3 applies due to high schema coverage.

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 it accesses real-time forex quotes for currency pairs and retrieves exchange rates/price changes. Verb+resource is specific ('Access real-time forex quotes'), but it does not explicitly distinguish from sibling tools like getForexQuotes or getForexShortQuote.

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?

Implied use case is monitoring market movements, but no explicit guidance on when to choose this over alternatives. No mention of batch vs single quote, historical vs real-time, or exclusions. Sibling tools with similar names are not referenced.

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