Birthday (kabbalistic)

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

Annotations already indicate read-only, non-destructive, and idempotent behavior. The description adds minimal behavioral context beyond stating it calculates from the day-of-birth digit. It does not explain processing of timezone or location parameters, nor what happens with invalid dates.

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, with only two sentences and an example request. It is quickly scannable but could be slightly more structured (e.g., bullet points) without adding length.

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 lack of output schema and the complexity introduced by optional location parameters and many siblings, the description is incomplete. It does not explain what the birthday number represents, the role of extra fields, or how output is formatted.

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%, but the description only mentions the 'date' parameter in an example. It does not clarify the purpose or impact of latitude, longitude, or timezoneOffset beyond the minimal schema descriptions. Thus it adds no extra meaning.

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 calculates a birthday number from the day-of-birth digit, specifying the Kabbalistic (phonetic) system. However, it does not differentiate from many sibling tools with similar names (e.g., 'numerology_kabbalistic_strict_birthday', 'numerology_pythagorean_birthday'), leaving ambiguity for the agent.

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 provides no guidance on when to use this tool versus alternatives, nor does it mention when not to use it. The extensive sibling list includes many birthday-number tools, but the description offers no context for selection.

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