apply_dns_forwarder_changes

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

Annotations already indicate idempotent and non-destructive behavior. The description adds the batch-apply context and the dependency on previous changes, but does not disclose potential side effects (e.g., service reload or temporary downtime). This is acceptable but not rich.

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?

Two sentences with no redundancy. The primary action is front-loaded, followed immediately by usage guidance. Every word earns its place.

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 zero-parameter apply tool with an output schema present, the description adequately covers purpose and usage. It could mention what happens if no changes are pending, but this is a minor omission. Overall, it is complete enough for the simplicity of the 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?

The tool has zero parameters, so there is no parameter documentation requirement. The description's mention of 'pending changes' is contextual rather than parameter-specific. A baseline of 4 is appropriate for zero-parameter tools.

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 ('Apply pending DNS Forwarder changes') with a specific verb and resource. It is unambiguous and distinguishes itself from sibling apply_* tools by naming the DNS Forwarder subsystem.

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?

Explicitly instructs when to use the tool: 'Use this after making changes with apply_immediately=False to batch-apply them.' This provides a clear precondition and usage context, effectively differentiating it from direct update tools.

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