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

Annotations already declare readOnlyHint, idempotentHint, non-destructive and closed-world, so the safety profile is covered. The description usefully adds the endpoint and the 20-credit Tier-2 cost, but discloses nothing about the volume/shape of a 5-level cascade or any auth requirement.

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?

Two compact lines with the operative fact ('5-level cascade, finest grain') front-loaded, followed by structured metadata lines for group, endpoint and cost. No filler, though the bracketed metadata is boilerplate rather than task guidance.

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 cost/endpoint are supplied. However, for a tool sitting inside a family of five near-identical Shatabdika variants, the definition never explains what the prana level is for or when it beats the sookshma/pratyantar alternatives.

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 body schema carries extensive field-level documentation (timezone semantics, rejected short forms, houseSystem letters). The description adds nothing beyond that, so baseline 3 is correct.

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 the specific resource (Shatabdika Pranadasha) and adds structural meaning with '5-level cascade (finest grain)', which tells the agent this returns deeply nested dasha periods. It does not explicitly name the neighboring levels (maha/antar/pratyantar/sookshma) to contrast against, but the resource is unambiguous.

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 statement of what distinguishes the prana level from the five sibling Shatabdika tools, and no prerequisites. Only the cost tier is given, which is operational rather than selection guidance.

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