List Vpn Accounts

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

Annotations already declare readOnlyHint=true, so safety is covered. The description adds a genuinely useful behavioral fact — that certain account endpoints do not exist on the device — but says nothing about return shape, pagination, or failure modes beyond the 1003 mention.

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 text is compact and front-loads the purpose, but it spends most of its length on internal endpoint names (a backend implementation detail) rather than the input/output semantics an agent actually needs, so the content is not well allocated.

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?

An output schema exists, so return values need not be explained. But the definition leaves the vpn_type value domain undocumented and does not clarify its relationship to list_vpn_clients, which is essential for correct tool selection in this crowded VPN-tool family.

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?

There is one parameter (vpn_type, default 'pptp') with 0% schema description coverage. The description names endpoint strings like pptp_client/l2tp_client/openvpn-client/ike_client but never explicitly maps them to accepted vpn_type values, so the valid enum is left to 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 states it lists VPN client configurations (列出 VPN 客户端配置), which is a specific verb+resource. However, the tool is named list_vpn_accounts while the description describes client configs, and a sibling list_vpn_clients exists — the definition never resolves this naming/scope ambiguity, so an agent cannot cleanly distinguish the two.

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 'empirical' note explains which internal endpoints exist and that *_user endpoints return 1003, but it gives no guidance on when to call this tool versus list_vpn_clients or list_vpn_servers. There is no stated condition or exclusion that selects this tool.

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