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

No annotations are provided, so the description carries the full behavioral burden. It discloses that the tool 'casts... and interprets,' and that it costs $0.10 paid via x402, which is useful. However, it does not say what the response contains, whether the result is deterministic, or any other operational side effects beyond payment.

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 description is compact, front-loads the action and method, and communicates selection context and cost in three sentences. The historical sentence is slightly supplementary, but it strengthens the tool's distinct identity without bloating the entry.

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?

For a one-parameter tool with no output schema, the description gives selection guidance and cost, but leaves the return format and interpretation content unspecified. Since no output schema exists, a sentence describing what the response looks like would round out the help materially.

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?

The schema provides 100% coverage of the single 'question' parameter, including a description, so the tool description does not need to restate parameter meaning. The description adds domain context about suitable questions, but no extra syntax, formatting, or constraints beyond the schema.Description adds domain context about suitable questions, but no extra syntax

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 a specific verb and resource: it 'casts a full 16-figure shield chart and interprets it,' tied to the concrete Geomancy tradition ('Ilm al-Raml). This clearly differentiates it from the other 'consult_*' oracle tools by method and interpretive focus.

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 tool says it is 'Best for where the problem actually lies, structural diagnosis, practical matters, career, money, property, and health,' giving an agent usable selection context. It does not name sibling tools or explicitly state when not to use it, but the context is clear enough.

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