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

With no annotations, the description carries the burden. It implies a read-only list operation ('Access', 'explore') and mentions 'real-time,' but does not clarify what data is returned, any limitations, or whether 'real-time' refers to the list itself or market data. For a 0-parameter list tool, this is minimally adequate but lacks depth.

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, but the second sentence ('The FMP Commodities List API provides essential data... real-time') is largely promotional and vague, adding little beyond the first sentence. It is concise but includes fluff that could be trimmed.

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 no output schema and no parameter constraints, the description is simple. However, it does not specify what the list contains (e.g., symbols, names, sectors) or how it differs from related list tools like getForexList or getCryptocurrencyList. The 'real-time' claim is ambiguous without further 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?

The input schema has no properties, so schema coverage is 100%. The description adds context that the list spans sectors like energy, metals, and agriculture, which aligns with the absence of parameters. Baseline for 0 params is 4, and no parameter explanation is needed.

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 function: 'Access an extensive list of tracked commodities across various sectors, including energy, metals, and agricultural products.' The verb 'Access' and resource 'list of tracked commodities' are specific, and the mention of sectors distinguishes it from related tools like getCommodityQuotes or getCOTList.

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 by describing the list's content and purpose ('explore market options'), but it does not explicitly state when to use this tool versus alternatives like getCommodityQuotes or getCOTList. No exclusions or contextual triggers are provided.

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