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

With no annotations, the description carries the full behavioral burden. It discloses that the tool computes yield discounted for volatility, incentive-share, TVL, outliers, and impermanent loss, and it mentions the cost of $0.02 USDC on Base. This is meaningful transparency about methodology and pricing, though it doesn't describe output structure or failure modes.

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, front-loaded sentence that immediately states what the tool does, then provides key methodology and cost details. There is no wasted wording, and the structure is easy to scan.

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 tool has 4 parameters, no annotations, and no output schema, the description provides a good overview of purpose and methodology but lacks parameter details and output format. It is a viable but incomplete description for an agent to fully use the tool without guessing.

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 the description should compensate. It only hints at the chain parameter by mentioning Base/Ethereum but doesn't explain limit, min_tvl, or stablecoin. The parameter names and defaults are self-explanatory to some degree, but the description adds little beyond the schema's property titles.

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 identifies the tool as a risk-adjusted DeFi yield screener that ranks Base/Ethereum pools by yield discounted for various risk factors. It specifies the resource (pools) and the action (ranking/screening), and the 'top' in the name implies a ranked list. However, it doesn't explicitly differentiate from sibling tools like defi_pool_deep, so it's not a 5.

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 implies usage: if you want the best risk-adjusted DeFi yields, use this tool. It provides context for when to use it (screening top pools), but it doesn't mention alternatives or when not to use it. No explicit guidance about when to choose defi_pool vs defi_pool_deep is given.

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