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

No annotations are provided, so the description carries the full behavioral burden. It discloses the computation formula and a trial/pricing note, but not input conventions (are dividends/netIncome absolute values or ratios?), validation behavior, error handling, or output shape for a tool with no output schema.

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 core sentence is front-loaded and short, but the appended '🆓 5 free trial calls per signed wallet' is marketing noise that occupies space without helping invocation. Size is acceptable but not every element earns its place.

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 two-parameter calculator with no annotations and no output schema, the description should at least resolve input format and the sibling overlap with x402-dividend-payout-ratio. Neither is addressed, so an agent still lacks what it needs to call this correctly rather than the alternative.

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% and both parameters are typed merely as strings. The description names the inputs only implicitly through the formula, giving no guidance on units, decimal vs. percent form, or why numbers are accepted as strings. An agent cannot tell what a valid value looks like.

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 ('Computes') and resource (dividend payout percentage) and even gives the formula (dividends / net income * 100), so the operation is unambiguous. However, it does not distinguish itself from the near-identical sibling x402-dividend-payout-ratio, leaving an agent to guess between two tools that appear to do the same thing.

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?

No when-to-use guidance and no mention of alternatives, despite x402-dividend-payout-ratio being an almost exact sibling name. The only context offered is promotional ('5 free trial calls'), not selection criteria.

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