vnt_proxy_sjis_ext_save

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

With no annotations, the description carries full responsibility for behavioral disclosure. It fails to mention whether the file is overwritten, if directories are created, or what happens if no mapping table exists. The side effects of the 'sync_util' merge are not described in the tool description, only in the 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 description is a single, concise sentence that gets straight to the point. It is well-structured and front-loaded, though it omits useful contextual details that would improve clarity without adding much length.

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 tool has two parameters and no output schema, and the description is minimal. It does not explain the purpose of the mapping table, how the sync_util option behaves, or what the tool returns. Given the context and existence of a related load tool, this description is insufficient for complete understanding.

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 description does not explain the 'path' parameter, and it is unclear whether 'path' is a directory or a full file path given the fixed name 'sjis_ext.bin'. Schema coverage is only 50%, with no description for 'path', and the tool description does not compensate for this gap.

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 the tool's function with a specific verb ('Write') and resource ('current tunnel mapping table'), naming the output file 'sjis_ext.bin'. It effectively distinguishes itself from the sibling 'vnt_proxy_sjis_ext_load' by indicating a save operation.

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 provides no explicit guidance on when to use this tool or how it compares to alternatives. While the name implies saving after a mapping table has been built, it does not state prerequisites or exclusion conditions, leaving usage ambiguous.

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