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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered. The description adds two pieces of context beyond that — the 20-credit Tier 2 cost and the output granularity ('5-level cascade, finest grain') — which is useful but thin, with no note on volume/size of the cascade output.

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?

It is very short and front-loads the system and level name before the bracketed metadata. Nothing is padded, though the bracket block is largely structured metadata (endpoint, cost) that could be considered filler.

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?

With an output schema present and 100% schema coverage, the return-value burden is off the description's shoulders. Still, for a specialized Vedic dasha tool with body target-date fields, it omits what a '5-level cascade' actually contains and when the targetDate parameters matter, so it is only adequately complete.

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%, including a detailed nested body description and clear field/precision explanations, so the schema carries the parameter burden. The description itself adds nothing about parameters (e.g. how targetDate/targetTime interact with the birth date), 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 specific dasha system (Shodashottari) and level (Pranadasha) and hints at depth with '5-level cascade (finest grain)', so the resource is identifiable. However, it uses no verb at all — it never says the tool computes/returns dasha periods — and it does not explicitly distinguish itself from the many sibling levels (maha/antar/pratyantar/sookshma), leaving the agent to infer the ordering.

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 when-to-use guidance, no prerequisites, and no mention of alternatives, despite dozens of closely related dasha tools in the sibling list. The only routing help is implicit ('finest grain'), which is weak given how easily this could be confused with the sookshma or pratyantar variants.

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