validate_codice_fiscale

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

No annotations present, but description discloses scope (structure validation only) and mentions case-insensitivity and space ignoring. Could be slightly more explicit about return type, but overall transparent.

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?

Three concise sentences with no fluff, front-loaded imperative 'USE THIS', efficient and clear.

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 simple nature of the tool and no output schema, the description sufficiently covers what the tool does and its limitations. No missing critical information.

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 coverage is 100%, and description adds value by noting that spaces are ignored and input is case-insensitive, which is helpful for the agent when constructing input.

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 verifies an Italian Codice Fiscale, checking format and check character, distinguishing it from other validation tools by specifying the exact 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?

Provides explicit guidance: 'USE THIS to verify... before relying on it' and clarifies 'Validates structure only; does NOT confirm registration,' giving clear context for when to use and limitations.

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