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convert_rem_px

Convert CSS rem values to pixels and pixels to rem using a customizable root font size.

Instructions

Convert between REM and PX units for CSS. Example: Convert 1.5rem to pixels, or 24px to rem units.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
valueYesValue to convert (e.g., 1.5 for 1.5rem or 24 for 24px)
fromUnitYesSource unit - either 'rem' or 'px'
rootFontSizeNoRoot font size in pixels (default: 16px - standard browser default)
Behavior3/5

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

Annotations indicate readOnlyHint=false, but the description does not contradict this. The conversion operation is non-destructive and computational. Description adds the bidirectional nature via example, but lacks additional behavioral context.

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 long, front-loaded with purpose, and includes a concrete example. Every part is relevant and concise.

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 full parameter descriptions in schema, the description covers the core functionality. However, it lacks details about output format (e.g., number vs string) and any edge cases, which might be helpful but not critical.

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 the schema already documents all parameters. The description adds an example that illustrates usage but does not provide significant new semantic meaning beyond the schema.

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 tool converts between REM and PX units for CSS, distinguishing it from other conversion tools on the server. The verb 'convert' and resource 'REM and PX' are specific and unambiguous.

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?

The description includes an example but does not explicitly state when to use this tool versus alternatives, nor does it provide guidance on prerequisites or limitations. Context is implied but not thorough.

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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