Expression / Destiny (vedic)

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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is clear. The description adds no extra behavioral context (e.g., required permissions, rate limits, or output behavior), but it does not contradict 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 relatively concise with a clear purpose and example, though the example introduces a parameter not in the schema, which detracts. The group tag adds organizational context.

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?

No output schema is provided, and the description does not explain the return value. For a tool with many siblings, more context (such as expected output or typical use cases) is needed. The missing 'name' parameter from the schema further reduces completeness.

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?

The description mentions 'full birth name letters' and the example includes a 'name' field, but the input schema has no 'name' property—only date and location fields. This mismatch confuses parameter semantics, and the description fails to clarify how name is supplied. Schema coverage is 100% but the description adds contradictory information.

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 the Expression (Destiny) number using the Vedic system from the full birth name, distinguishing it from other numerology tools like life path or soul urge.

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?

No guidance on when to use this tool versus alternatives. With many sibling numerology tools, the description fails to specify context or exclusions, leaving the agent without decision support.

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