Delete snapshot

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

Annotations already declare readOnlyHint=false, idempotentHint=true, and destructiveHint=true, which cover the destructive and idempotent nature. The description's 'Delete a snapshot' is consistent with these annotations but adds no additional behavioral context, such as reversibility, permission requirements, or what occurs if the snapshot doesn't exist. With annotations present, the bar is lower, and the description does not contradict them, so a 3 is appropriate.

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 concise, with two short sentences. The first sentence states the core action, and the second rephrases the purpose. While efficient, the second sentence is somewhat redundant ('Use this endpoint to remove VPS snapshots' overlaps with the first). It is front-loaded with the key information and has no unnecessary fluff, earning a 4.

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?

For a simple delete operation with one well-documented parameter and annotations covering destructive and idempotent behavior, the description is largely sufficient. It doesn't mention error handling or return format, but given the low complexity and that the output schema is absent, the missing details are minor. The existing coverage is adequate for an agent to call the tool correctly.

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 provides 100% coverage for the single required parameter 'virtualMachineId' with description 'Virtual Machine ID.' The tool description merely references 'a specified virtual machine' without adding formatting, constraints, or additional meaning beyond the schema. Thus the description adds minimal value, warranting the baseline 3.

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 action: 'Delete a snapshot of a specified virtual machine.' It identifies the specific resource (snapshot) and the target (virtual machine), and distinguishes it from sibling operations like create, restore, or get snapshots. The verb and resource are unambiguous.

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 includes 'Use this endpoint to remove VPS snapshots,' which restates the purpose but does not provide guidance on when to use this tool versus alternatives. No explicit conditions, exclusions, or comparisons with related snapshot operations (create, restore, get) are given. The agent has to infer the use case from the tool name alone.

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