add_vpn_account

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 merely states '添加 VPN 账号' without revealing any behavioral traits such as whether the operation is idempotent, requires specific permissions, overwrites existing accounts, or affects VPN server configuration. This leaves the agent blind to the tool's side effects.

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 extremely short, but this is under-specification rather than effective conciseness. A single phrase that merely repeats the tool name does not earn its place; it offers no substantive information. The lack of any additional structure or detail makes it inadequate.

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 tool has five parameters (three required) and no annotations, the description is severely incomplete. It does not explain what the parameters do, what the return value represents (despite an output schema existing), or any contextual details such as supported VPN types or usage scenarios. This is insufficient for an AI agent to correctly invoke the 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 schema includes five parameters (comment, ip_type, password, username, vpn_type) with zero schema description coverage. The description does not mention any of these parameters or their meaning, failing to compensate for the lack of schema descriptions. Parameter names are somewhat self-explanatory, but the description adds no value beyond the schema structure.

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 '添加 VPN 账号' is a direct translation of the tool name 'add_vpn_account', essentially restating the name without adding any specific detail about what the tool does. It does not differentiate the tool from other 'add_*' operations like add_pppoe_account or add_admin_account, nor does it mention the VPN types or context.

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 guidance on when to use this tool versus alternatives. It does not mention any prerequisites, constraints, or exclusions, leaving the agent without usage context. The name implies adding VPN accounts, but there is no explicit instruction or differentiation.

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