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

Annotations already declare readOnlyHint, idempotentHint, non-destructive and a closed world, so the safety profile is covered. The description usefully adds the cost (10 credits, Tier 1) and the HTTP endpoint, but says nothing about response shape, latency, or whether the call is deterministic across identical inputs beyond the generic idempotent hint.

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 prose is a single front-loaded sentence and the metadata blocks are compact and scannable. The bracketed lines carry real information (group, endpoint, required fields, cost) rather than filler, though they are structural boilerplate rather than description content.

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 described, and the four required inputs are enumerated. However, for a 15-parameter tool with one-third schema coverage, the description gives no orientation to the optional chart-style parameters, leaving the agent unable to judge defaults or when to override them.

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 only 33%, and the description merely repeats the four required fields already implied by the schema. Nothing explains the many optional switches (zodiacType, houseSystem, ayanamsa/ayanamsaId, cosmogram) or how they change the suitability reading, so the description fails to compensate for the coverage gap.

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 evaluation task — whether a proposed launch date is suitable — which is a clear verb+resource for an electional astrology endpoint. It does not differentiate itself from adjacent siblings such as astroway_vedic_muhurat_business_start or astroway_calendar_* timing tools, and it references a 'venture type' that appears nowhere in the input schema, which slightly blurs the intent.

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 when this should be preferred over the muhurta/calendar timing siblings, and no note on prerequisites (e.g. whether a pre-existing business chart is needed). The only usage context is the mechanical metadata block (endpoint, required fields, cost).

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