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

Annotations already declare readOnlyHint=true, idempotentHint=true and destructiveHint=false, covering the safety profile. The description adds the credit cost (10 credits, Tier 1) and endpoint, which are useful operational facts, but says nothing about response shape or rate behavior. Credit cost lifts it slightly above minimal.

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?

Purpose is front-loaded in the first sentence and the bracketed metadata is compact. Slightly padded by the '[Group]/[Endpoint]' block that partly duplicates the name, but no sentence is wasted.

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?

An output schema exists, so return values need no explanation, and annotations cover safety. For a 4-param read-only calculator the description supplies purpose, system, cost, and required inputs, leaving little an agent would need to infer.

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' are documented in the schema itself, while 'date' and 'name' carry pattern/length constraints but no prose. The description only restates the required parameters ('Required: name, date') without adding format meaning, so baseline 3 is appropriate.

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?

States a specific verb ('Calculate') and resource ('Maturity number'), then defines the concept as the sum of Life Path and Expression. The 'Vedic system' tag distinguishes it from the chaldean/kabbalistic/pythagorean maturity siblings that share the same name.

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 'Vedic system' label implies which variant to pick among the many maturity tools, but there is no explicit when-to-use guidance or routing statement. Usage context is only inferable from the system name rather than spelled out.

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