Privacy Policy

lol-draft-ai is an analytical draft study tool. Predictions run on our serverless infrastructure (not in your browser). There is no live Riot API traffic, no in-game overlay, and no player-level tracking. We collect anonymous, aggregated usage analytics (page views, Core Web Vitals) via Vercel; we do not use cookies, fingerprinting, or cross-site trackers to identify individual visitors.

• Prediction requests. When you edit a draft on this site, the current draft state (10 champion IDs at most, target slot side/role, and a candidate ID list) is sent to /api/predict-topk and /api/comp-winrate. Requests are processed in memory; drafts are not persisted or written to durable storage. Rate limiting temporarily holds your IP address in process memory (5-minute idle eviction).
• Standard hosting logs. Vercel and Cloudflare, our infrastructure providers, record standard edge request logs (IP, User-Agent, request path, status code) for delivery, abuse prevention, and rate limiting.
• Anonymous product analytics. Vercel Web Analytics records page views, referrer, browser, country (city-level not exposed), and Core Web Vitals (LCP, CLS, INP, etc.). Vercel Analytics is cookieless and does not build cross-site user profiles.

• No account, sign-in, or user profile is required or offered.
• No summoner-level identifiers (puuid, summoner name, match ID) are sent from your browser to our servers.
• No cookies are set for authentication or tracking.
• No third-party ad, marketing, or cross-site fingerprinting scripts.
• Drafts are not saved server-side or associated with an identity.

• Champion icon assets are self-hosted from our origin. They were originally sourced from Riot's Data Dragon and are redistributed for display only.
• Fonts (IBM Plex Mono, JetBrains Mono) are loaded from Google Fonts. Google may receive standard HTTP request metadata (IP, User-Agent) as part of that load. See Google's privacy policy.
• Hosting and serverless inference is provided by Vercel. Vercel's edge network processes prediction requests and collects standard request logs and anonymous product analytics. See Vercel's privacy policy.
• DNS and edge protection is provided by Cloudflare. See Cloudflare's privacy policy.

The ONNX models used by this site were trained offline on publicly available League of Legends match data obtained through the official Riot Games API, in compliance with Riot's Developer Terms. No personally identifiable summoner data is served at inference time; only aggregated pick / ban / mastery signals are encoded in the model weights.

This service is not directed at children under 13.

Questions or takedown requests: kawakin0310@icloud.com.