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

Beyond the annotations (readOnlyHint=false, destructiveHint=false), the description discloses that the actual bank transfer is the user's responsibilityaine and that points auto-charge only when depositor name and amount match. It also tells the agent to surface the transfer details to the user. These are meaningful behavioral details that help the agent set expectations correctly.

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 two tight sentences in Korean. The first sentence states the core action, and the second provides the essential user-facing operational guidance. There is no fluff, repetition, or unnecessary background; every word 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?

Given the lack of an output schema, the description compensates by telling the agent what to do with the transfer field in the response and what success behavior to expect. It covers the key operational flow for the agent. It does not detail error cases or other potential response fields, but for a straightforward request tool this is acceptable and near-complete.

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 already provides 100% descriptive coverage for all six parameters, including the requirement that depositorName match the actual transfer name. The description reinforces the relationship between amount/depositorName and automatic charging, but it adds little beyond the schema's existing explanations. Therefore the baseline of 3 is appropriate.

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 states a specific verb ('신청합니다' = apply/request) and a unique resource (포인트 충전 = point charge), which immediately distinguishes this tool from siblings like cancel_charge_request, get_charge_request, and list_charge_requests. It also adds concrete post-call details about the transfer object, making the purpose unmistakable.

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 when to use the tool: when a user wants to request a point charge via bank transfer, and it explains the auto-charge condition. However, it never explicitly contrasts this with alternatives such as create_checkout or create_order, nor does it state when not to use the tool. The usage context is clear but only implied, not directly prescribed.

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