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

The annotation destructiveHint=true already signals the destructive nature, so the description adds little beyond repeating 'Permanently deletes'. It does not clarify whether the action is reversible, requires authentication, affects DNS records, or has rate limits. With annotations providing basic safety hints, the description fails to add meaningful behavioral context for a destructive operation.

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?

Extremely concise single sentence that front-loads the key verb. No waste, no redundancy.

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 destructive tool with an output schema and full parameter description, the minimal description is adequate but misses important context such as whether deletion cascades to related domains or DNS records, whether it can be undone, and any required permissions. The annotations cover some safety aspects, but the overall guidance for a high-risk operation is thin.

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?

Only one parameter, and the schema fully describes it with an example. The description correctly implies a domain name is needed but adds no extra meaning since the schema already covers it well. Since there is a single parameter, baseline 4 applies when the schema is rich.

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 verb (deletes) and resource (domain) precisely matching the tool name and title. It is clearly distinguishable from siblings like domains_get or domains_set, making the agent's selection easy.

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?

Provides no guidance on when to use this tool versus alternatives such as domains_set or domains_verify, nor any prerequisites or warnings beyond the word 'Permanently'. The agent must infer appropriate contexts.

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