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hebcal

hebcal-mcp

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by hebcal

convert-hebrew-to-gregorian

Convert a Hebrew date to a Gregorian date by specifying the Hebrew day, month, and year.

Instructions

Converts a Hebrew date to a Gregorian (civil) date

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
dayYesHebrew day of month
monthYesHebrew month name transliterated, like Elul or Tishrei
yearYesHebrew year
Behavior2/5

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

With no annotations provided, the description carries full burden for behavioral traits. It fails to mention edge cases like leap years, month name validation, or error handling, providing minimal transparency.

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 a single sentence and front-loaded, but it is too minimal, lacking details that would make it appropriately sized for the tool's complexity.

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?

Without an output schema or annotations, and with a terse description, the tool definition is incomplete. It does not explain return format, potential errors, or validation rules.

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% with descriptions for each parameter, so the description adds no extra meaning beyond what the schema already provides.

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

Purpose5/5

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

The description clearly states the action ('converts') and the resource ('Hebrew date to Gregorian date'), distinguishing it from the sibling 'convert-gregorian-to-hebrew' which does the reverse.

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

Usage Guidelines3/5

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

Usage is implied by the name and description, but no explicit guidance is given on when to use this tool versus alternatives like 'convert-gregorian-to-hebrew' or other calendar 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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