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

No annotations are provided, so the description carries the full burden. It discloses that the output includes a reduction trail and meaning, but fails to mention whether it is read-only, error handling for invalid dates, or any security/permission implications. The behavioral context is partial.

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 concise sentence with no redundancy. Slightly more clarity could be achieved by removing the redundant 'core numerology number' phrase, but it remains efficient overall.

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 zero schema coverage, no output schema, and no annotations, the description is incomplete. It lacks parameter constraints, return structure details, and error/edge-case behavior. A more comprehensive description is needed for this three-parameter tool.

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%, yet the description adds no detail about parameter formats or constraints (e.g., month 1-12, day 1-31). It only implies they form a birth date. This is insufficient given the lack of schema documentation.

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 computes the Life Path number from a birth date, including reduction trail and meaning. It distinguishes itself from siblings like 'compatibility' and 'numerology_profile' by focusing specifically on this core numerology number.

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 implies usage for obtaining a Life Path number, but no explicit guidance on when not to use or alternatives (e.g., use 'numerology_profile' for a full profile). Siblings exist, but no comparative direction is provided.

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