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Found 9 Skills
Build a collaborative text editor backend with Yjs CRDTs and Rivet Actors: per-document actors relay sync and awareness updates and persist snapshots.
Yjs CRDT patterns, shared types, conflict resolution, and meta data structures. Use when building collaborative apps with Yjs, handling Y.Map/Y.Array/Y.Text, implementing drag-and-drop reordering, or optimizing document storage.
Time Travel CRDT Skill
Agent skill for crdt-synchronizer - invoke with $agent-crdt-synchronizer
Build multiplayer Decentraland scenes with a headless Multiplayer Server. Use when the user wants authoritative multiplayer, anti-cheat, server-side validation, persistent storage, or server messages. Do NOT use for basic CRDT multiplayer without a server (see multiplayer-sync).
Local-first architecture decision framework for web applications. Covers when to go local-first vs server-based vs hybrid, sync engine selection (ElectricSQL, Zero, PowerSync, Replicache, LiveStore, Triplit), client-side storage options (IndexedDB, OPFS, SQLite WASM, PGlite), and conflict resolution strategies (LWW, CRDTs, server-wins, field-level merge). Use when deciding whether to adopt local-first architecture, choosing a sync engine, selecting client storage, or designing conflict resolution strategies.
Peer-to-peer multiplayer in Decentraland using CRDT networking with syncEntity and MessageBus. Use when the user wants multiplayer, synced entities, shared world state, broadcast events, or player-to-player communication without a server. Do NOT use for server-authoritative multiplayer, anti-cheat, or persistent storage (see authoritative-server). Do NOT use for screen UI (see build-ui).
Velt Activity Logs implementation patterns and best practices for React, Next.js, and web applications. Use when adding real-time activity feeds, custom activity logging, audit trails, CRDT debounce configuration, server-side activity management via REST API, customizing the Activity Log wireframe with template variables (velt-data, velt-if, velt-class), or composing the VeltActivityLogWireframe sub-component tree (Header, Filter, List, DateGroup, Item, ShowMore, Empty, Loading).
Build real-time collaborative editing with WebSockets, OT/CRDT conflict resolution, and presence awareness. Implements cursor tracking, optimistic updates, and offline sync. Use for collaborative editors, whiteboards, video editing. Activate on "real-time collaboration", "WebSocket sync", "multiplayer editing", "CRDT", "presence awareness". NOT for simple chat, request-response APIs, or single-user apps.