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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint=false, and destructiveHint=false, covering the safety profile. The description adds the cost (5 credits) and required parameter, which is useful, but says nothing about what the palace reading contains or how it's computed. Given annotations carry the behavioral burden, a 3 reflects modest added context.

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 content is extremely short and front-loaded, but the bracketed metadata lines read like internal API documentation (endpoint, tier, credits) rather than agent-facing description. It's concise without being wasteful, yet the phrasing is not structured as 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-value explanation isn't strictly needed, but the description never says what the travel palace is or how it relates to the other ziwei palace tools. For a themed analysis tool one of many near-identical siblings, this leaves the agent without enough to select it confidently.

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 67%, with four of six parameters documented in the schema (timezone, timezoneOffset, fields, precision). The description only repeats that date is required, adding no new parameter semantics. Baseline 3 is appropriate when the schema does most of the work.

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 the resource ('Travel Palace') and its thematic content ('Travel, relocation, foreign opportunities'), which is clearer than the bare title. However, it does not differentiate this tool from the many other ziwei palace tools or explain what the tool actually returns — it reads more like a topic label than a verb+resource statement of function.

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 statement of when to use this tool versus alternatives such as astroway_ziwei_palace_property or astroway_vedic_muhurat_travel. The bracketed metadata gives endpoint/cost facts but no usage context or exclusions.

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