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

With no annotations, the description carries the full burden and does disclose a key operational trait — a $0.01 USDC cost per call — plus the shape of the returned data. It never states permission or auth requirements for invoking a paid endpoint, and 'recent' has no defined lookback window.

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?

Three short sentences with zero padding: purpose, return contents, cost. Front-loaded with the action and resource, with the pricing caveat at the end where it belongs.

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 single-parameter, no-output-schema tool, the description compensates by enumerating return fields and stating cost. The remaining gap is the undefined time window behind 'recent swap activity', which the agent would need in order to interpret results.

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?

Only one parameter, and schema description coverage is 100%, so the base58 Solana address is fully documented in the schema. The description adds no meaning beyond it, which is the expected baseline when the schema does all the work.

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 and resource ('Analyze a wallet's recent swap activity') plus the intended use case ('for copy trading'), and enumerates what comes back (positions, buy/sell patterns, entry prices, frequency). It does not explicitly distinguish itself from nearby siblings like wallet_pnl, wallet_profile, or top_traders, leaving the agent to infer the boundary.

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 'for copy trading' implies the use context, but there is no explicit when-to-use/when-not guidance and no named alternative such as wallet_profile for general wallet stats or wallet_pnl for returns. The agent can infer intent but must guess at the sibling boundary.

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