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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds real value beyond annotations by disclosing the endpoint and a concrete cost (20 credits, Tier 2), which an agent needs for budgeting. It does not describe the cascade output structure, but the output schema covers that.

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?

Extremely short and front-loaded: the core meaning comes first, then bracketed metadata lines. Every sentence earns its place, though the metadata lines are boilerplate rather than explanatory.

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 not be explained, and the input schema is thorough. However, for a specialist Vedic computation in a large sibling family, the description gives no indication of what the Sookshma cascade produces or how it relates to the other dasha levels, leaving an agent to infer from the title alone.

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%, so the schema fully documents body, fields, and precision with rich prose (timezone handling, houseSystem letters, compact mode). The description adds nothing about parameters, 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 states a specific verb-resource: computing the Sookshma (4th-level) Dasha within the running Pratyantardasha, plus '4-level cascade'. This distinguishes it from the maha/antar/pratyantar/prana siblings by level. It doesn't name an alternative sibling tool explicitly, but the level naming is unambiguous for an agent scanning the dasha family.

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 explicit when-to-use guidance, no exclusions, and no reference to alternative dasha-level tools. The agent must infer from the word 'Sookshma' and the tool name that this is the 4th-level drill-down. Implied usage only, no routing help.

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