get_live_quote

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

Since no annotations are provided, the description carries full burden for behavioral disclosure. It mentions the WebSocket feed, limitation to gettex/EUR, behavior outside trading hours (initial quote possible), and enforced timeout. This is good coverage for a live quote tool.

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?

Description is very concise: two sentences front-loading the purpose and adding behavioral context. No wasted words or repetition.

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?

The description covers tool source, limitation, and behavioral quirks. With an output schema present, return value details are not needed. It is almost complete; could mention data freshness or real-time nature explicitly.

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 0%, so description needs to add meaning to the 2 parameters. It clarifies the quote is from gettex in EUR but does not explain the isin parameter or how timeout_seconds is related to the mentioned timeout. The timeout mention is vague and not explicitly linked to the parameter.

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 returns the latest live quote for an ETF from gettex in EUR. The verb 'Return' and specific resource (live quote for ETF from gettex in EUR) distinguish it from sibling tools like get_chart or search_etfs.

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?

Description explains the tool uses justETF's WebSocket feed, supports only gettex/EUR, and mentions behavior outside trading hours with a timeout. It provides clear context for when to use the tool, though it doesn't explicitly mention when not to use or suggest alternatives.

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