vnt_proxy_sjis_decode

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

No annotations are provided, so the description must carry the full burden. It only states that a mapping table is used, but does not disclose whether the operation is read-only, what the return format is, or what sync_util does. This is minimal behavioral context.

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, front-loaded sentence that states the action and the mechanism without any filler. Every word contributes.

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 absence of annotations and output schema, the description is too brief. It does not specify the return value, error conditions, or the role of sync_util, leaving the agent without essential execution context.

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 schema covers 67% of parameters with descriptions for hex and bytes_hex, and the description adds the context of using a loaded mapping table. However, sync_util remains unexplained, and the description does not clarify parameter relationships.

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 uses the specific verb 'Decode' with the resource 'SJIS+tunnel bytes', clearly indicating the operation. It also mentions 'using the current / loaded mapping table', which distinguishes it from encoding or extension load/save siblings.

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 usage for decoding SJIS/tunnel bytes, but provides no explicit when-to-use or when-not-to-use guidance, nor does it reference alternatives like the encode sibling.

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