Landfiller privacy policy
Updated October 4, 2026.
Information we process
Landfiller processes commander names, build constraints, exclusions, submitted decklists, and feedback to provide the requested features. Browser builds may be saved publicly and shared by URL. MCP builds are previews and are not saved as public builds.
Activity and reliability
We record page paths, user agents, referring URLs, country signals when available, activity types, and limited request metadata. Request IP addresses are used to create a daily rotating hashed session identifier and to limit requests; the analytics events table stores the identifier rather than the raw IP address. Hosting infrastructure may maintain request logs. MCP search and build events are recorded separately from browser activity.
Storage and service providers
Card and price data may be cached. Records currently have no universal automatic deletion schedule; cached records may expire and the operator may remove records. Preferences may be stored in your browser. Landfiller uses Railway for hosting and data storage, Scryfall for card data, and TCGplayer links for shopping. The Impact publisher script loads on website pages to transform eligible brand links and record impressions. It may send page URLs, referral information, and session identifiers to Impact and use browser storage for attribution. Following affiliate links may send referral information to TCGplayer or its affiliate provider, which apply their own policies. Your AI provider also processes your conversation under its policies.
Contact
For privacy questions or deletion requests, email [email protected]. Include the relevant build or feedback reference, without sending passwords or payment information.