vpn_disconnect

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

There are no annotations, and the description simply states the action without disclosing any behavioral details such as side effects, reversibility, or what happens to active connections. The full burden falls on the description, which it does not meet.

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, direct sentence with no redundant words. It is appropriately sized for a simple action and is front-loaded with the key verb and object.

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 description is extremely sparse. It lacks any context about when to use the tool, what to expect after disconnecting, or how it relates to sibling tools. With no annotations and no output schema, the description fails to provide a complete picture.

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 tool has zero parameters and the input schema is empty, so the baseline is 4. The description does not need to explain parameter semantics, and the schema fully covers the (non-existent) parameters.

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 'Disconnect VPN.' is a direct restatement of the tool name 'vpn_disconnect'. It states the action but adds no additional specificity or differentiation beyond what the name already conveys, making it essentially a tautology.

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 like vpn_connect or vpn_status. It does not mention any prerequisites, context, or exclusions.

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