compare_to_competitors

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

With no annotations, the description must fully disclose behavior. It states returns are dollar savings per competitor at the current rate but does not mention safety traits (e.g., read-only nature), auth needs, or rate limits. The description is not misleading but lacks depth.

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 concise with only two sentences. The first sentence states the purpose and lists competitors, and the second clarifies the output. No extraneous words; efficiently front-loaded.

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?

The description explains input (comparison) and output (dollar savings per competitor) sufficiently. An output schema exists, so return details need not be in the description. However, it could mention dynamic rates or edge cases like missing data for a competitor, but overall it is complete enough for a comparison tool.

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 has 100% coverage with descriptions for all parameters. The description adds context by framing the output as savings at the DPX all-in rate, but does not provide additional meaning for individual parameters beyond what the schema already offers.

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 action (compare), the resource (DPX settlement cost), and the target competitors (Stripe, Wise, JPMorgan Coin, SWIFT, PayPal, Western Union). It specifies the output as dollar savings and references the current DPX all-in rate, distinguishing it from sibling tools like 'get_fee_schedule' or 'verify_fees'.

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 the tool is used for cost comparison against the listed competitors but does not provide explicit guidance on when to use it versus alternative tools or when not to use it. Context is implied but not explicitly stated.

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