Suspend VM

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

Annotations already declare idempotentHint and destructiveHint, so the bar is lower. The description adds that the VM must be running and that state is saved to disk, which is useful. However, it does not mention error conditions, effects on unsaved guest data, or behavior if the VM is already suspended. No contradiction with annotations.

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 brief and well-organized: a one-sentence purpose, a short Args list, and a Returns note. Every word earns its place. No verbosity or redundant content.

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 simple operation, good schema coverage, and annotations, the description is mostly sufficient. It states the purpose, necessary inputs, and return value. It lacks explicit distinction from fusion_stop_vm and does not mention resuming later, but these are minor gaps for a tool of this simplicity.

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?

Schema description coverage is 100%, and both parameters have clear descriptions. The description repeats vmx_path but adds no extra semantic value beyond what the schema provides. vm_password is not mentioned in the description, but the schema handles it adequately.

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 a specific verb ('Suspend') and resource ('VMware Fusion virtual machine'), and adds a key distinguishing behavior: 'Saves the VM's state to disk.' This clearly separates it from sibling tools like stop or reset, which do not preserve state.

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?

Usage is implied by 'Suspend a running VM' and the state-saving behavior, but there is no explicit guidance on when to use suspend over alternatives like stop or reset, nor any exclusion such as 'do not use if the VM is not running.' The description relies on the agent to infer context.

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