get_ipv4_info

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

Without annotations, the description must convey behavioral traits. It only states it 'gets information' and returns a dictionary, but does not disclose if it's read-only, what happens with invalid input, or any side effects. The return type is vague.

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 short at two sentences, but the second sentence is a docstring that adds no value. It is efficient and front-loaded, though it could omit the :return line.

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?

Despite having an output schema, the description is vague about what information is returned and does not explain how the tool determines the IPv4 address. Sibling tools exist, but no differentiation is made, leaving the agent uncertain.

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 input schema has zero parameters, so schema coverage is trivially 100%. The description does not clarify how the IPv4 address is provided (e.g., implicit from context), which is needed for correct invocation. Baseline for 0 params is 4, but the lack of clarity reduces it.

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 'Get information about an IPv4 address,' which is a specific verb+resource combination. The name itself distinguishes it from sibling get_ipv6_info, so the purpose is clear.

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 like get_ipv6_info or get_info. There is no mention of prerequisites or context, leaving the agent without decision criteria.

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