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

Annotations already disclose read-only and idempotent behavior, so the description does not need to repeat safety. It adds behavioral context by implying the response includes buy/sell actions, but does not disclose limitations like pagination boundaries or data freshness. The added value is modest, hence a 3.

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 short sentences, front-loaded with the core action, and contains no unnecessary words. Every phrase adds value, making it highly efficient.

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?

For a simple query tool with two parameters and no output schema, the description adequately conveys what the tool does and the use case. It lacks explicit return-value details, but the absence of an output schema is compensated by the clear statement of what is returned (recent DEX trades).

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 fully documents both parameters (chain enum and per_page default), so the baseline is 3. The description adds no additional parameter-level detail beyond what the schema already provides; it only explains the overall purpose.

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 fetches recent DEX trades by smart money wallets, using a specific verb and resource. The added phrase 'Spot what top traders are actively buying/selling' reinforces the intended use and distinguishes it from related tools like holdings or flows.

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 provides a clear context for when to use this tool: when you need recent DEX trade activity from smart money wallets. It does not explicitly exclude alternatives or mention when not to use it, but the context is sufficient given the tool's specific niche among siblings.

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