get_last_trades_prices

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

No annotations are provided, so the description carries the full behavioral burden. It does not state read-only/non-destructive nature, rate limits, behavior on missing/invalid token IDs, or error handling for tokens with no trades. 'Most recently executed trades' hints at latest-price semantics but nothing more.

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 core sentence is front-loaded, precise, and free of filler. The Args block is slightly redundant in restating the string type and adds little beyond the schema, so not a perfect score.

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?

Because an output schema exists, return values need not be explained. But with no annotations and a mutation-free read tool, missing guidance on batch behavior, missing-token handling, and explicit sibling differentiation leaves an agent with unanswered operational questions.

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% and there is only one parameter. The description compensates by specifying the format: a comma-separated list of foundational token IDs. That is genuinely useful beyond the schema, but the term 'foundational' is ambiguous and no ID format or example is given.

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?

States a specific verb (retrieve), resource (transaction prices of most recently executed trades), and scope (multiple outcome tokens concurrently). Distinguishes itself from the singular sibling get_last_trade_price by emphasizing the concurrent multi-token batch behavior.

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 phrase 'most recently executed trades' and 'multiple outcome tokens concurrently' implies a batch-latest-price use case, and the singular sibling name suggests a per-token alternative. However, the description never explicitly says when to prefer this over get_last_trade_price or get_price, leaving the agent to infer.

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