Reactive Nostr SDK for TypeScript and JavaScript built on RxJS and a single in-memory EventStore. Use whenever the user is building or modifying a Nostr client, working with NIP events/filters/pointers, subscribing to relays or pools, managing accounts/signers, loading events, publishing/replying/reacting/following, rendering note content, working with NIP-17/44/46/57/60/65, or wiring reactive React UI over Nostr data. Prefer this skill any time the user is in a TS/JS Nostr context, even if they have not named applesauce explicitly.
Build terminal UIs with OpenTUI. Covers the core API, native audio, keymaps, React and Solid bindings, components, layout, keyboard input, plugins, and testing.