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

With no annotations provided, the description carries the full behavioral burden. It implies a read-only DNS lookup but does not disclose authentication needs, rate limits, error behavior, or edge cases such as domains with no CAA record.

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 one concise sentence with no filler. 'CAA Records' is front-loaded and the explanatory clause adds useful meaning beyond the title.

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 single-parameter lookup with an output schema, the description clarifies the general purpose but leaves input format and sibling-tool selection unaddressed. An agent choosing between this and similar DNS record tools lacks enough context to invoke it confidently.

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 schema has a single undocumented parameter 'q' with 0% coverage, and the description partially compensates by indicating the query is a domain. However, it does not specify the expected format, whether bare domains or URLs are accepted, or what the default empty string means.

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 identifies CAA records as the resource and explains their purpose (which CAs may issue certs for the domain). This distinguishes it from general DNS tools, though it lacks an explicit verb like 'lookup' or 'get'.

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 is given on when to use this tool versus the many DNS-related siblings such as dnsquery, dnsrecon, or dnssec. The description explains what CAA records are but not the conditions that should lead an agent to select this tool over alternatives.

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