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

No annotations are provided, so the description carries full burden. It mentions 'Check DNS Records' which implies a read operation, but doesn't disclose behavioral traits like authentication needs, rate limits, error handling, or what 'Check' entails (e.g., validation, retrieval). The description is too vague to inform the agent adequately.

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 only one sentence with redundant phrasing ('Invoke this endpoint') that doesn't earn its place. It's under-specified rather than concise, failing to provide necessary context or structure for effective use.

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?

Given the complexity of 7 parameters, no annotations, and no output schema, the description is incomplete. It doesn't explain what the tool returns, how to interpret results, or any dependencies, leaving significant gaps for a tool that likely interacts with DNS systems.

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 description coverage is 100%, so the schema fully documents all 7 parameters. The description adds no parameter semantics beyond what's in the schema, such as explaining how to specify the domain or DNS record types. Baseline 3 is appropriate as the schema does the heavy lifting.

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 states 'Check DNS Records for Domain' which is a clear verb+resource, but it's followed by 'Invoke this endpoint' which is tautological and adds no value. It doesn't differentiate from sibling tools like 'get_dns_records_13627177e0' or 'add_dns_records_13629231e0', leaving the specific purpose ambiguous.

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 provided on when to use this tool versus alternatives. With siblings like 'get_dns_records_13627177e0' and 'add_dns_records_13629231e0', the description offers no context for selection, prerequisites, or exclusions.

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