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

Annotations already declare readOnlyHint/idempotentHint/non-destructive, so the safety profile is covered. The description adds genuinely useful behavioral facts not in the annotations: the 10-credit Tier 1 cost and the required input set. It still says nothing about output shape, but that is largely covered by the output schema.

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 purpose sentence is front-loaded and free of filler, and the bracket block is a compact, scannable metadata list. Slightly terse overall, but every line carries operational information.

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, return values need not be explained, and the cost/required/endpoint block covers the invocation basics. However, for a 15-parameter astrological tool, the description does not help an agent understand which optional settings matter, leaving a real gap given the low schema coverage.

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 coverage is only 33% across 15 parameters, so the description should compensate but does not. It merely repeats the four required fields that the schema already marks as required, and adds no meaning for the influential optional parameters (zodiacType, houseSystem, ayanamsa variants) that shape the derivation.

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 a specific resource and output concept: element-based dietary focus covering foods to emphasize/avoid plus cooking style. This clearly separates it from adjacent wellness siblings like herbs, exercise, or yoga, though it offers no explicit contrast with the similar astroway_pet_diet_by_sign.

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?

The bracket block gives operational metadata (group, endpoint, cost, required inputs) but no when-to-use guidance, no prerequisites, and no mention of alternatives such as the herbs or medical-astrology wellness tools. An agent must infer the context entirely.

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