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

Annotations already declare readOnlyHint, idempotentHint and non-destructive, covering the safety profile, so the description only needs to add context. It usefully discloses the credit cost (20 credits, Tier 2) and group, but says nothing about authentication needs or the shape of the cascade returned.

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 definition is two short bracketed fragments, front-loaded with the technique name, which is efficient. But at this size it omits essential context rather than being tight prose, so it reads as under-specification rather than true conciseness.

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 and parameters are fully documented, so those burdens are lifted. Still, for one of five near-identical Sthira dasha-level tools in a catalogue of hundreds of siblings, the description gives no guidance on differentiating or interpreting the result, leaving a real gap.

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 100% and the nested birth-data body is documented in exhaustive detail in the schema itself. The description adds no parameter meaning beyond the schema, so the baseline 3 applies.

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 the technique (Sthira Pranadasha) and characterizes it as a '5-level cascade (finest grain)', which hints at depth of the dasha subdivision. However, it does not distinguish this from the many close siblings such as sthira_sookshma, sthira_pratyantar, sthira_antar and sthira_maha, so an agent must already know Vedic dasha level terminology to pick correctly.

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?

There is no statement of when to use this tool versus the other four Sthira dasha levels, nor any prerequisite or context for invocation. Only 'finest grain' vaguely implies a use case, and it is left to inference.

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