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

No annotations provided, so description must disclose behavior. It only implies classification output but does not describe output format, error handling, or edge cases like invalid IPs. The minimal disclosure is insufficient.

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?

Two sentences with the action front-loaded. However, the second sentence is redundant ('When: Classify...' repeats the first sentence's content). Could be more concise.

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?

A simple tool with one parameter and no output schema. The description covers the core purpose but lacks details on output and error handling. Adequate but not fully complete.

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 has 0% parameter description coverage. The description only implies the 'ip' parameter is an IP address string, but does not specify format, allowed values, or examples. With low coverage, more detail is needed.

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 it detects IPv4/IPv6 and classifies private/loopback/global, specifying the verb 'Detect' and resource. It differentiates from siblings like ipv4_private_check, but the second sentence is redundant, slightly reducing clarity.

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?

Includes 'When: Classify IPv4/IPv6 and private/global' which explicitly states usage context. However, it does not mention when not to use or provide alternatives, which is acceptable given the narrow scope.

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