Huỷ mã QR

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It only says 'cancel' without explaining whether cancellation is permanent, what side effects occur, whether existing payment attempts are affected, or whether the operation can be reversed. This is thin for a mutation-like operation.

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 concise bilingual line with no filler and the action verb is front-loaded. The Vietnamese and English duplicate the same content, which is slightly redundant, but overall it is appropriately sized for a simple one-parameter tool.

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 tool with no annotations and no output schema, the description does too little. It omits the operation's effects, prerequisites, return behavior, and any caveats. An agent acting on this description alone knows what the tool does but not enough about the consequences of invoking it.

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 single parameter qr_code_id has no schema description and the description does not explain its format, source, or semantics. An agent can infer that it identifies the QR to cancel, but nothing goes beyond that basic inference.

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 states a specific action ('cancel') and a specific resource (a dynamic VietQR that has been created). This distinguishes it from sibling tools like monapay_create_qr, and the bilingual phrasing reinforces the intent without ambiguity.

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?

There is no guidance about when to use this tool versus alternatives. It does not mention that it applies only to previously created dynamic QRs, nor does it indicate when another sibling tool should be preferred. The usage context is only implicit from the tool name and brief phrase.

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