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

With no annotations, the description carries the behavioral burden and does so well: it discloses a 10-minute cache, the exact filter threshold, sort order, the $0.0100 USDC per-call price, the x402 payment/auth mechanism, and the POST execution URL. It does not cover failure modes or rate limiting, so it falls short of a full 5.

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 purpose and filter constraints are front-loaded in the first clause, and the price/execution metadata is clearly separated by '||'. It is dense but every element (filters, cache, price, endpoint) earns its place; only the Malay prose style slightly obscures the reading order.

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 read-only lookup tool with no output schema, the description covers source, filtering, sorting, caching and payment, which is most of what an agent needs to call it. The only gap is the shape of the returned data (fields per pool), which the description leaves unspecified.

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 100%, so both parameters (jumlah, stabil) are already documented in the schema with the same 1-10 / default-5 and stablecoin-only semantics. The description adds no format or behavioral detail beyond the schema, so the baseline of 3 applies.

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 precise verb+resource+scope: highest-APY DeFi pools across all chains via DefiLlama, filtered to TVL ≥ $10M and sorted by APY. This is specific enough to distinguish it from siblings like peluang, banding-token or risiko.

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 filter criteria (TVL ≥ $10M, sorted by APY) and the 'stabil' toggle imply when the tool is relevant, but there is no explicit when-to-use / when-not-to-use statement or any routing against sibling tools that may overlap. Usage is implied rather than stated.

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