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

Annotations already declare this a read-only, idempotent, non-destructive, closed-world call, so safety is covered. The description usefully adds cost context (20 credits, Tier 2) that appears nowhere in the structured fields, but says nothing about what a sookshma-level result contains or how the 4-level cascade is structured.

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 text is short and the one substantive clause ('4-level cascade') is front-loaded, but the two bracketed metadata lines are boilerplate and the whole thing is under-specified rather than genuinely economical. Nothing is wasted, yet little is delivered.

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, but for a tool sitting among five Kalachakra depth variants plus dozens of other dasha systems, the description fails to say what distinguishes this level or when the extra depth is warranted. '4-level cascade' is ambiguous about whether it returns four levels or is the fourth level.

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%, with rich documentation of date/time/timezone/houseSystem and the optional targetDate/targetTime fields, so the baseline is 3. The description adds no parameter meaning beyond the schema and never signals that target-date fields exist for period selection.

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 resource ('Kalachakra Sookshmadasha') and adds a structural hint ('4-level cascade'), so the purpose is inferable, but there is no verb and it essentially restates the title. It does nothing to distinguish this from the near-identical kalachakra_prana, kalachakra_pratyantar, kalachakra_antar and kalachakra_maha siblings, leaving the agent to guess which cascade depth it computes.

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 at all: no condition selecting this depth over the other four Kalachakra levels, no note on required birth data, and no mention of the target-date parameters. The agent gets no help routing between this tool and its many look-alike siblings.

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