validator_validate_ip

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

With no annotations, the description effectively discloses the return structure (valid, version, is_private, is_loopback). It implies pure validation without side effects, which aligns with the tool's nature. Minor omission: no mention of error handling or invalid input behavior.

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 a single precise sentence with a clear prefix and returns list. It is front-loaded and contains no redundant words. Every part earns its place.

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 tool's simplicity and the presence of sibling tools, the description covers the essential input and output. The output schema is explicitly defined, and the input is simple. Slightly incomplete regarding error cases or validation strictness.

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 no description for the 'ip' parameter (0% coverage). The description compensates by stating it accepts an IPv4 or IPv6 address, adding meaning beyond the raw schema. However, it does not specify format constraints or examples.

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 validates an IP address (IPv4 or IPv6), using a specific verb and resource. It distinguishes from siblings like validate_email or validate_url by specifying the resource type. The return type is also provided, fully clarifying the purpose.

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?

The description lacks explicit when-to-use or when-not-to-use guidance compared to alternatives. It does not mention that this should be used specifically for IP validation versus other validation tools, leaving the usage decision entirely to the agent's inference from the name.

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