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

The description discloses that the download URL is time-limited, a behavioral trait not covered by the annotations. It also implicitly indicates the operation is read-only and idempotent, consistent with the hints. No contradictions are present.

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 a single, focused sentence that conveys purpose and prerequisite without unnecessary elaboration. Parameter descriptions are also concise and directly relevant. The structure is optimally organized for a tool with six parameters.

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 presence of an output schema and the clear description of purpose and prerequisite, the tool definition is complete. The description covers all necessary operational aspects, and the context signals indicate no missing information.

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?

All six parameters are described with meaningful details beyond the field names. For example, slug is specified as the exact filename from list_market_data, and exchange lists concrete venue examples. Timeframe includes a note about venue-dependent omission, adding practical guidance.

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 returns a time-limited download URL for a single executed-trades file, distinguishing it from sibling tools that handle other file types. The verb 'Return' is precise, and the reference to list_market_data clarifies the intended usage context.

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 explicitly instructs to use list_market_data (md_type=trades) first to obtain the exact slug, providing a clear precondition and workflow. This effectively tells the user when and how to invoke the tool, leaving no ambiguity about the prerequisite step.

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