Create new firewall

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

Annotations already indicate a non-read, non-destructive write; the description adds no behavioral detail beyond that (e.g., whether the firewall starts activated, whether rules must be added separately, or what is affected). It does not contradict the annotations, but it does not disclose side effects or follow-up steps.

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 and front-loaded with the core action. The second sentence largely restates the first, adding only 'for VPS security,' so it is concise but not perfectly information-dense.

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?

With no output schema and no mention of the firewall lifecycle, an agent cannot tell what the response will contain or whether creating a firewall requires subsequent rule-creation/activation steps. For such a sibling-rich domain, this is a noticeable gap.

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 coverage is 100%, so the baseline is 3; however, the only parameter description is the tautological 'name parameter,' and the tool description does not clarify what name should represent (firewall label, VPS association, etc.).

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?

States a specific action and resource: 'Create a new firewall' / 'set up new firewall configurations for VPS security.' It is clear enough to distinguish a firewall-level operation from rule-level siblings such as VPS_createFirewallRuleV1, though it never explicitly contrasts them.

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 instead of VPS_createFirewallRuleV1, VPS_activateFirewallV1, or VPS_syncFirewallV1. The only context is 'Use this endpoint to set up new firewall configurations,' which restates the purpose rather than providing selection criteria.

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