Life Path Number (pythagorean)

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

Annotations already declare read-only, idempotent, non-destructive, closed-world behavior, so the safety profile is covered. The description adds useful operational context: it is a POST calculation endpoint, requires name and date, and costs 10 credits (Tier 1). It does not contradict the annotations.

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 front-loaded with the core calculation, then compactly states group, endpoint, required inputs, and cost. There is no wasted prose, and every section is directly useful to an agent selecting or invoking the tool.

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?

For a simple deterministic read-only calculation with an output schema and rich annotations, the description covers the system, input basis, cost, and required parameters. It still leaves the role of the required name parameter and explicit sibling routing slightly under-explained, but overall it is sufficient to invoke the tool correctly.

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 0%, so the description must carry parameter meaning. It partially explains date as year + month + day reduced, but it does not explain why name is required or what it is used for, and it omits exact format and length constraints that the schema only encodes structurally.

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 uses a specific verb ("Calculate") and resource ("Life Path number") and names the system ("Pythagorean") plus the input basis (birth date). This distinguishes it from sibling life-path tools for Chaldean, Kabbalistic, and Vedic numerology without needing to open the schema.

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 identifies the Pythagorean system and numerology group, which implies when this tool applies, but it gives no explicit when-to-use, when-not-to-use, or named alternatives among the many other life-path tools. The context is enough to infer the use case, not enough to guide selection decisively.

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