MayhemLab product & compliance review

Product summary

MayhemLab is a Windows desktop League of Legends companion focused on personal training, self match-history review, aggregate personal statistics, mode-specific progression, build/reference access, and session organization.

Current release

MayhemLab Desktop v2.5.1 is available as a Windows installer. Connected HQ features and Discord submissions have been tested in limited early access; public community availability remains restricted during the preview. Community submissions are opt-in and not independently Riot-verified. Production Riot API access has not yet been approved.

Player value

The product helps players track growth and identify personal patterns such as role comfort, champion performance, ranked consistency, win/loss differences, session form, records, and changes across patches.

Target platform

Windows desktop for League of Legends players. The current product connects to supported local League interfaces on the same user's computer and organizes the user's own game data.

Supported experiences

• Normal Summoner's Rift
• Ranked Summoner's Rift
• League Classic reference/build workspace
• ARAM
• ARAM Mayhem
• Arena placement analysis

Primary product features

• Personal Game Labs by mode
• Ranked Climb Lens
• Champion Lab and League class filters
• Personal Intelligence Feed
• Match Archive and post-match review
• Tonight Mode session tracking
• Personal records and achievements
• Readability/accessibility controls
• Trophy Vault with weekly challenges, HQ points, class mastery and opt-in Discord achievements
• League Pulse newsroom and opt-in Discord news relay

Current data sources

• Supported local League Client interfaces
• League Live Client Data API for information already visible/available during the user's own game
• Riot game/static data such as Data Dragon where appropriate
• User's locally stored MayhemLab history
• Optional external MetaSRC reference browser, clearly separated as third-party content
• Public League news from a community-maintained mirror and version metadata from Riot Data Dragon
• Optional opt-in community event submissions through an authenticated HQ service to Discord

Planned production Riot API use

After production approval, MayhemLab intends to use documented Riot API endpoints for supported user match-history and timeline-based personal analysis. Requests requiring the Production API key will be made by a secured MayhemLab backend over HTTPS. The key will not be included in distributed desktop code.

API security architecture

• No Production API key in the desktop binary.
• Production-key calls are intended to originate from a secured server.
• HTTPS for server-to-Riot API traffic.
• Rate-limit handling and caching planned at the service layer.
• One registered product per Production key.

Privacy approach

• Current desktop history is local-first.
• No MayhemLab account is required by the preview.
• No Riot password is requested by MayhemLab.
• Optional Discord HQ pairing and sharing are documented in the current Privacy Policy; further account/RSO/cloud features require separate policy updates.
• Full Privacy Policy

Website verification

This website is published on the developer-controlled domain mayhemlab.win. After Riot provides the verification string, the exact string will be published at /riot.txt for verification and removed after the process is complete.

Test the prototype

Download the Windows installer linked from the product website to evaluate the desktop prototype. The website also includes a browser demo with fictional data and screenshots of the application. The preview installs through a Windows setup wizard; no Node.js setup is needed for players. The installer is currently unsigned.