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astroway-mcp

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Perfections

hellenistic_hand_perfections
Read-onlyIdempotent

Calculate perfection-of-aspects timing using the Hellenistic hand tradition for a natal chart.

Instructions

Perfection-of-aspects timing.

[Group: Hellenistic — Hand tradition]

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

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
bodyYesBirth data for a single natal chart. Required: date (YYYY-MM-DD), time (HH:mm:ss). Defaults to lat/lon/tz=0 if omitted; pass real values for accurate computation.
Behavior2/5

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

Annotations indicate readOnlyHint=true and idempotentHint=true, but the description adds no behavioral context beyond 'timing.' It does not explain what the computation produces or any side effects, failing to add value beyond structured annotations.

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 extremely short, but the example request body is malformed and unhelpful. It is not effectively front-loaded with essential information.

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 complex nested schema, many sibling tools, and no output schema, the description critically lacks context. It does not explain what 'perfection-of-aspects' means, that targetAge is required, or what the tool returns.

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

Parameters3/5

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

Schema coverage is 100%, so the baseline is 3. The description provides no additional parameter details and an incomplete example, but does not degrade from the baseline.

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 says 'Perfection-of-aspects timing,' which is a technical term but not a clear verb+resource. It does not differentiate from sibling tools like hellenistic_hand_bounds or hellenistic_hand_critical_degrees. The purpose is vague for an AI agent unfamiliar with the domain.

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 description lacks context about when perfection-of-aspects timing is appropriate or when to choose other Hellenistic Hand tools.

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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