arvan_net_dns_lookup

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

Annotations already mark it as read-only (readOnlyHint=true). The description adds minimal behavioral context beyond this, such as noting that nameserver can be used to test propagation. However, it does not disclose important aspects like error behavior, rate limits, or whether the result is a raw DNS response.

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 brief and front-loaded with the primary action. The parameter list is organized and clear, using concise descriptions. Every sentence adds value without superfluous content.

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?

The description covers the tool's basic operation and parameters adequately for a simple lookup. However, it lacks information about the return format (what does the result look like?) and does not address potential errors or edge cases. Without an output schema, more detail on the response would improve completeness.

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?

With 0% schema description coverage, the description compensates by explaining each parameter: name is a hostname, record_type lists common types, nameserver is an optional resolver IP for propagation testing, timeout is in seconds. This adds significant meaning beyond the schema's type-only definitions.

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 'Resolve a DNS record', using a specific verb and resource. It distinguishes itself from sibling DNS management tools like arvan_create_dns_record and arvan_get_dns_record, which deal with managed records rather than live DNS resolution.

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 explicit guidance on when to use this tool versus alternatives. The description does not mention when not to use it, nor does it compare with other network tools like arvan_net_ping or arvan_get_dns_record. Usage is only implied by the tool's purpose.

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