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astroway-mcp

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With Changing Lines

iching_with_changing_lines
Read-onlyIdempotent

Generate primary and transformed I Ching hexagrams with changing lines from a seed for divination and interpretation.

Instructions

Primary + transformed hexagrams.

[Group: I Ching (Standalone)]

Example request body: {"seed":"..."}

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
seedNo
Behavior2/5

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

Annotations declare readOnlyHint, destructiveHint, and idempotentHint. The description adds no behavioral information beyond these annotations, missing details like deterministic behavior or seed purpose.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is very short, front-loading the output. While concise, it lacks sufficient detail.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Despite having only one parameter and no output schema, the description does not explain what transformed hexagrams are or how the tool works, leaving incompleteness.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 0%, and the description only provides an example body without explaining the 'seed' parameter's role, leaving semantics unclear.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose3/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states it returns 'Primary + transformed hexagrams', which names the resource but lacks a clear verb. It does not distinguish from sibling I Ching tools like 'iching' or 'iching_daily'.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool versus alternatives. The example request body hints at input but does not specify context or prerequisites.

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

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