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DesignbyFahad

alliotools-mcp

time_zone_converter

Convert times between any IANA time zones with automatic Daylight Saving adjustment. Specify source and target zones, optionally with a time in ISO or YYYY-MM-DD HH:MM format.

Instructions

Convert a time from one time zone to another. Handles daylight saving automatically.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
timeNoTime to convert in ISO format or "YYYY-MM-DD HH:MM" (default: current time)
from_tzYesSource IANA timezone e.g. "America/New_York", "Europe/London", "Asia/Tokyo"
to_tzYesTarget IANA timezone
Behavior3/5

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

The description discloses a key behavioral trait: 'Handles daylight saving automatically.' With no annotations provided, this is valuable but insufficient. It does not mention error handling, validation of time zones, or behavior when 'time' is omitted (schema says defaults to current time). More behavioral context would be beneficial.

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

Conciseness5/5

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

The description is two sentences, highly concise, and front-loaded with the core purpose. Every sentence adds value: purpose and a key feature. No redundant or verbose language.

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

Completeness4/5

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

Given the tool's simplicity and the comprehensive schema coverage, the description is reasonably complete. It covers purpose and a key behavioral trait. However, since there is no output schema, a hint about the return format (e.g., converted time in the same format) would enhance completeness.

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 description coverage is 100%, so baseline is 3. The description adds no new parameter-specific information beyond what the schema provides (e.g., format examples for from_tz). The mention of daylight saving is a behavioral trait, not parameter semantics.

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

Purpose4/5

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

The description clearly states 'Convert a time from one time zone to another,' specifying the action and resource. It distinguishes from sibling tools like timestamp_converter and date_calculator by focusing on time zones. However, it does not explicitly differentiate from other time zone tools among siblings, but the name is self-explanatory.

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?

The description does not provide any guidance on when to use this tool versus alternatives. It lacks statements about when not to use it or mention of sibling tools. The agent must infer use case from the name alone.

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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