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rexlManu

League of Legends MCP Server

by rexlManu

LoL get champion rotation

lol_get_champion_rotation

Retrieve the current free champion rotation for any League of Legends platform. Specify your region to see which champions are available to play without purchase.

Instructions

Get current free champion rotation

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
platformNoPlatform: euw1, eun1, na1, kr, jp1, br1, la1, la2, oc1, tr1, rueuw1
Behavior2/5

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

No annotations provided. Description does not disclose behavioral traits such as authentication requirements, rate limits, or what data is returned (e.g., champion IDs only, or full info). The tool appears simple, but transparency is limited.

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

Conciseness4/5

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

Description is a single sentence, very concise. No wasted words, but lacks structure.

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

Completeness3/5

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

For a simple tool with one parameter and no output schema, the description is minimally adequate. However, it does not explain the return format or typical use case, leaving some gaps.

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 a description for the platform parameter. Description adds no additional meaning beyond the schema, so baseline 3 is appropriate.

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 gets the current free champion rotation, which is a specific verb+resource. It distinguishes from sibling tools like lol_get_all_champions or lol_get_champion_mastery.

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 vs alternatives. Does not mention that it is read-only or that it returns a list of champion IDs.

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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