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

Annotations already declare destructiveHint=true, so the agent knows it is a mutation. The description adds no behavioral context beyond repeating the action; it does not disclose what happens to the instance's network connectivity, whether the action is reversible, or any side effects. With annotations present, the bar is lower, but the description contributes zero additional transparency.

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 short but redundant: 'Remove instance from a Private Network - Remove a specific instance from a Private Network' is essentially the same statement twice. The second sentence adds no information, so it fails to earn its place. A single concise sentence would have been more effective.

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 removal operation, the description is insufficiently complete. It lacks any mention of return values (no output schema), prerequisites, side effects, or parameter semantics. While annotations signal destructiveness, the overall contextual picture is minimal, offering no guidance for an agent deciding whether to invoke this 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?

Schema description coverage is 0% and the description provides no parameter explanations. The four parameters (instanceId, privateNetworkId, x-request-id, x-trace-id) are left entirely to the schema's bare property names, which offer minimal semantic meaning. The description's phrase 'a specific instance' does not sufficiently clarify parameter roles.

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 tool's action and resource: 'Remove instance from a Private Network' with an explicit repetition reinforcing the specific operation. It distinguishes from siblings like assignInstancePrivateNetwork (the reverse) and deletePrivateNetwork (deleting the network itself), though the differentiation is implicit through the action verb and resource.

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?

No guidance on when to use this tool versus alternatives such as unassignIp (for IP unbinding) or deletePrivateNetwork. The description simply restates the action without context about prerequisites, reversibility, or scenarios that would favor this tool.

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