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

Annotations already cover read-only, idempotent, non-destructive, and closed-world behavior, so the description is not burdened with safety. It adds the 10-credit cost and the domain detail of activation around age 35, which is useful, but says nothing about auth requirements, error behavior, or calculation prerequisites beyond what annotations and output schema cover.

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 front-loaded sentences state the purpose and system; the group and cost tags follow in compact brackets. No sentence is wasted, and the most important routing information comes first.

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?

With an output schema, annotations covering safety, and a defined calculation, an agent has enough to invoke the tool selectively. The definition still lacks explicit routing against the strict Kabbalistic variant and does not clarify the expected name form, but these are minor gaps against the structured data already provided.

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 description coverage is 50% (fields and precision documented; name and date not). The description's mention of summing Life Path and Expression implies that a birth date and name are the required inputs, but it does not clarify name conventions (e.g., full birth name) or date format beyond the schema pattern. Baseline 3 is appropriate for this coverage level.

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 names a specific verb (calculate), resource (Maturity number), and system (Kabbalistic phonetic), and explains the formula (sum of Life Path and Expression). It distinguishes from other numerology systems by naming Kabbalistic, but never clarifies how it differs from the sibling kabbalistic_strict_maturity, leaving one sibling pair ambiguous.

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?

Usage is implied by the system and calculation stated, but there is no explicit when-to-use guidance, no exclusions, and no mention of alternatives such as the strict or other-system Maturity variants. An agent can infer context from the name and group tag, but nothing more is provided.

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