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astroway

astroway-mcp

Official

Marriage Line

palmistry_marriage_line
Read-onlyIdempotent

Analyze the marriage line on the palm to reveal insights into significant partnerships and relationship dynamics.

Instructions

Significant partnerships.

[Group: Palmistry (Cheiro)]

Example request body: {}

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
bodyYesRaw JSON body — see the example in the tool description for required fields
Behavior2/5

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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the tool is safe. The description adds no behavioral context beyond annotations, missing details like input requirements or output format.

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

Conciseness2/5

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

The description is very short but under-specified. Conciseness is achieved at the cost of completeness, providing insufficient information for an agent to use the tool correctly.

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

Completeness1/5

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

Given the tool's complexity and many siblings, the description fails to provide essential context such as input type (e.g., a palm image), output structure, or how the marriage line is interpreted. No output schema exists to compensate.

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?

The single 'body' parameter is described in the schema as 'Raw JSON body — see the example in the tool description for required fields'. The description only provides an empty example '{}', which adds minimal semantic insight and may mislead about required fields.

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

Purpose1/5

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

The description 'Significant partnerships' is vague and lacks a verb or specific action. It does not state what the tool does (e.g., 'Analyze the marriage line'), nor does it distinguish from sibling tools like palmistry_heart_line.

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

Usage Guidelines1/5

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 other palmistry tools. No mention of prerequisites or context for usage.

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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