diff --git a/packages/system-react/README.md b/packages/system-react/README.md
index 2855a667..23a5e4d7 100644
--- a/packages/system-react/README.md
+++ b/packages/system-react/README.md
@@ -2,7 +2,32 @@
 
 React hooks for @snort/system
 
-Sample:
+### Available hooks
+
+#### `useRequestBuilder(NoteStore, RequestBuilder)`
+
+The main hook which allows you to subscribe to nostr relays and returns a reactive store.
+
+#### `useUserProfile(pubkey: string | undefined)`
+
+Profile hook, profile loading is automated, this hook will return the profile from cache and also refresh the cache in the background (`stale-while-revalidate`)
+
+#### `useEventFeed(NostrLink)` / `useEventsFeed(Array<NostrLink>)`
+A simple hook which can load events using the `NostrLink` class, this class contains one NIP-19 entity `nevent/naddr` etc.
+
+#### `useReactions(id, Array<NostrLink>)`
+Loads reactions for a set of events, this can be a set of posts on a profile or an arbitary list of events.
+
+#### `useEventReactions(NostrLink, Array<NostrEvent>)`
+Process a set of related events (usually results from `useReactions`) and return likes/dislikes/reposts/zaps
+
+#### `useUserSearch()`
+Search for profiles in the profile cache, this also returns exact links if they match
+
+#### `useSystemState(System)`
+Hook state of the nostr system
+
+## Example:
 
 ```js
 import { useMemo } from "react";
diff --git a/packages/system/src/index.ts b/packages/system/src/index.ts
index a417e479..57160455 100644
--- a/packages/system/src/index.ts
+++ b/packages/system/src/index.ts
@@ -44,6 +44,8 @@ export * from "./cache/user-relays";
 export * from "./cache/user-metadata";
 export * from "./cache/relay-metric";
 
+export * from "./worker/system-worker";
+
 export interface SystemInterface {
   /**
    * Check event signatures (reccomended)
@@ -55,6 +57,11 @@ export interface SystemInterface {
    */
   get Sockets(): Array<ConnectionStateSnapshot>;
 
+  /**
+   * Do some initialization
+   */
+  Init(): Promise<void>;
+
   /**
    * Get an active query by ID
    * @param id Query ID
@@ -88,6 +95,9 @@ export interface SystemInterface {
    */
   DisconnectRelay(address: string): void;
 
+  /**
+   * Push an event into the system from external source
+   */
   HandleEvent(ev: TaggedNostrEvent): void;
 
   /**
diff --git a/packages/system/src/nostr-connection-pool.ts b/packages/system/src/nostr-connection-pool.ts
new file mode 100644
index 00000000..d44ba516
--- /dev/null
+++ b/packages/system/src/nostr-connection-pool.ts
@@ -0,0 +1,147 @@
+import { removeUndefined, sanitizeRelayUrl, unwrap } from "@snort/shared";
+import debug from "debug";
+import EventEmitter from "eventemitter3";
+
+import { Connection, ConnectionStateSnapshot, OkResponse, RelaySettings } from "./connection";
+import { NostrEvent, TaggedNostrEvent } from "./nostr";
+import { pickRelaysForReply } from "./outbox-model";
+import { SystemInterface } from ".";
+
+export interface NostrConnectionPoolEvents {
+  connected: (address: string, wasReconnect: boolean) => void;
+  connectFailed: (address: string) => void;
+  event: (address: string, sub: string, e: TaggedNostrEvent) => void;
+  eose: (address: string, sub: string) => void;
+  disconnect: (address: string, code: number) => void;
+  auth: (address: string, challenge: string, relay: string, cb: (ev: NostrEvent) => void) => void;
+  notice: (address: string, msg: string) => void;
+}
+
+/**
+ * Simple connection pool containing connections to multiple nostr relays
+ */
+export class NostrConnectionPool extends EventEmitter<NostrConnectionPoolEvents> {
+  #log = debug("NostrConnectionPool");
+
+  /**
+   * All currently connected websockets
+   */
+  #sockets = new Map<string, Connection>();
+
+  /**
+   * Get basic state information from the pool
+   */
+  getState(): ConnectionStateSnapshot[] {
+    return [...this.#sockets.values()].map(a => a.takeSnapshot());
+  }
+
+  /**
+   * Get a connection object from the pool
+   */
+  getConnection(id: string) {
+    return this.#sockets.get(id);
+  }
+
+  /**
+   * Add a new relay to the pool
+   */
+  async connect(address: string, options: RelaySettings, ephemeral: boolean) {
+    const addr = unwrap(sanitizeRelayUrl(address));
+    try {
+      const existing = this.#sockets.get(addr);
+      if (!existing) {
+        const c = new Connection(addr, options, ephemeral);
+        this.#sockets.set(addr, c);
+
+        c.on("event", (s, e) => this.emit("event", addr, s, e));
+        c.on("eose", s => this.emit("eose", addr, s));
+        c.on("disconnect", code => this.emit("disconnect", addr, code));
+        c.on("connected", r => this.emit("connected", addr, r));
+        c.on("auth", (cx, r, cb) => this.emit("auth", addr, cx, r, cb));
+        await c.Connect();
+        return c;
+      } else {
+        // update settings if already connected
+        existing.Settings = options;
+        // upgrade to non-ephemeral, never downgrade
+        if (existing.Ephemeral && !ephemeral) {
+          existing.Ephemeral = ephemeral;
+        }
+        return existing;
+      }
+    } catch (e) {
+      this.#log("%O", e);
+      this.emit("connectFailed", addr);
+      this.#sockets.delete(addr);
+    }
+  }
+
+  /**
+   * Remove relay from pool
+   */
+  disconnect(address: string) {
+    const addr = unwrap(sanitizeRelayUrl(address));
+    const c = this.#sockets.get(addr);
+    if (c) {
+      this.#sockets.delete(addr);
+      c.Close();
+    }
+  }
+
+  /**
+   * Broadcast event to all write relays.
+   * @remarks Also write event to read relays of those who are `p` tagged in the event (Inbox model)
+   */
+  async broadcast(system: SystemInterface, ev: NostrEvent, cb?: (rsp: OkResponse) => void) {
+    const writeRelays = [...this.#sockets.values()].filter(a => !a.Ephemeral && a.Settings.write);
+    const replyRelays = await pickRelaysForReply(ev, system);
+    const oks = await Promise.all([
+      ...writeRelays.map(async s => {
+        try {
+          const rsp = await s.SendAsync(ev);
+          cb?.(rsp);
+          return rsp;
+        } catch (e) {
+          console.error(e);
+        }
+        return;
+      }),
+      ...replyRelays.filter(a => !this.#sockets.has(unwrap(sanitizeRelayUrl(a)))).map(a => this.broadcastTo(a, ev)),
+    ]);
+    return removeUndefined(oks);
+  }
+
+  /**
+   * Send event to specific relay
+   */
+  async broadcastTo(address: string, ev: NostrEvent): Promise<OkResponse> {
+    const addrClean = sanitizeRelayUrl(address);
+    if (!addrClean) {
+      throw new Error("Invalid relay address");
+    }
+
+    const existing = this.#sockets.get(addrClean);
+    if (existing) {
+      return await existing.SendAsync(ev);
+    } else {
+      return await new Promise<OkResponse>((resolve, reject) => {
+        const c = new Connection(address, { write: true, read: true }, true);
+
+        const t = setTimeout(reject, 10_000);
+        c.once("connected", async () => {
+          clearTimeout(t);
+          const rsp = await c.SendAsync(ev);
+          c.Close();
+          resolve(rsp);
+        });
+        c.Connect();
+      });
+    }
+  }
+
+  *[Symbol.iterator]() {
+    for (const kv of this.#sockets) {
+      yield kv;
+    }
+  }
+}
diff --git a/packages/system/src/nostr-system.ts b/packages/system/src/nostr-system.ts
index 0c49e028..20570372 100644
--- a/packages/system/src/nostr-system.ts
+++ b/packages/system/src/nostr-system.ts
@@ -1,9 +1,9 @@
 import debug from "debug";
 import EventEmitter from "eventemitter3";
 
-import { unwrap, sanitizeRelayUrl, FeedCache, removeUndefined } from "@snort/shared";
+import { unwrap, FeedCache } from "@snort/shared";
 import { NostrEvent, TaggedNostrEvent } from "./nostr";
-import { Connection, RelaySettings, ConnectionStateSnapshot, OkResponse } from "./connection";
+import { RelaySettings, ConnectionStateSnapshot, OkResponse } from "./connection";
 import { Query } from "./query";
 import { NoteCollection, NoteStore } from "./note-collection";
 import { BuiltRawReqFilter, RequestBuilder, RequestStrategy } from "./request-builder";
@@ -22,14 +22,25 @@ import {
   EventExt,
 } from ".";
 import { EventsCache } from "./cache/events";
-import { RelayCache, RelayMetadataLoader, pickRelaysForReply } from "./outbox-model";
+import { RelayCache, RelayMetadataLoader } from "./outbox-model";
 import { QueryOptimizer, DefaultQueryOptimizer } from "./query-optimizer";
 import { trimFilters } from "./request-trim";
+import { NostrConnectionPool } from "./nostr-connection-pool";
 
-interface NostrSystemEvents {
+export interface NostrSystemEvents {
   change: (state: SystemSnapshot) => void;
   auth: (challenge: string, relay: string, cb: (ev: NostrEvent) => void) => void;
-  event: (ev: TaggedNostrEvent) => void;
+  event: (id: string, ev: TaggedNostrEvent) => void;
+}
+
+export interface NostrsystemProps {
+  relayCache?: FeedCache<UsersRelays>;
+  profileCache?: FeedCache<MetadataCache>;
+  relayMetrics?: FeedCache<RelayMetrics>;
+  eventsCache?: FeedCache<NostrEvent>;
+  queryOptimizer?: QueryOptimizer;
+  db?: SnortSystemDb;
+  checkSigs?: boolean;
 }
 
 /**
@@ -37,11 +48,7 @@ interface NostrSystemEvents {
  */
 export class NostrSystem extends EventEmitter<NostrSystemEvents> implements SystemInterface {
   #log = debug("System");
-
-  /**
-   * All currently connected websockets
-   */
-  #sockets = new Map<string, Connection>();
+  #pool = new NostrConnectionPool();
 
   /**
    * All active queries
@@ -90,15 +97,7 @@ export class NostrSystem extends EventEmitter<NostrSystemEvents> implements Syst
 
   #relayLoader: RelayMetadataLoader;
 
-  constructor(props: {
-    relayCache?: FeedCache<UsersRelays>;
-    profileCache?: FeedCache<MetadataCache>;
-    relayMetrics?: FeedCache<RelayMetrics>;
-    eventsCache?: FeedCache<NostrEvent>;
-    queryOptimizer?: QueryOptimizer;
-    db?: SnortSystemDb;
-    checkSigs?: boolean;
-  }) {
+  constructor(props: NostrsystemProps) {
     super();
     this.#relayCache = props.relayCache ?? new UserRelaysCache(props.db?.userRelays);
     this.#profileCache = props.profileCache ?? new UserProfileCache(props.db?.users);
@@ -111,6 +110,67 @@ export class NostrSystem extends EventEmitter<NostrSystemEvents> implements Syst
     this.#relayLoader = new RelayMetadataLoader(this, this.#relayCache);
     this.checkSigs = props.checkSigs ?? true;
     this.#cleanup();
+
+    // hook connection pool
+    this.#pool.on("connected", (id, wasReconnect) => {
+      const c = this.#pool.getConnection(id);
+      if (c) {
+        this.#relayMetrics.onConnect(c.Address);
+        if (wasReconnect) {
+          for (const [, q] of this.Queries) {
+            q.connectionRestored(c);
+          }
+        }
+      }
+    });
+    this.#pool.on("connectFailed", address => {
+      this.#relayMetrics.onDisconnect(address, 0);
+    });
+    this.#pool.on("event", (_, sub, ev) => {
+      ev.relays?.length && this.#relayMetrics.onEvent(ev.relays[0]);
+
+      if (!EventExt.isValid(ev)) {
+        this.#log("Rejecting invalid event %O", ev);
+        return;
+      }
+      if (this.checkSigs) {
+        const id = EventExt.createId(ev);
+        if (!this.#queryOptimizer.schnorrVerify(id, ev.sig, ev.pubkey)) {
+          this.#log("Invalid sig %O", ev);
+          return;
+        }
+      }
+
+      this.emit("event", sub, ev);
+    });
+    this.#pool.on("disconnect", (id, code) => {
+      const c = this.#pool.getConnection(id);
+      if (c) {
+        this.#relayMetrics.onDisconnect(c.Address, code);
+        for (const [, q] of this.Queries) {
+          q.connectionLost(c.Id);
+        }
+      }
+    });
+    this.#pool.on("eose", (id, sub) => {
+      const c = this.#pool.getConnection(id);
+      if (c) {
+        for (const [, v] of this.Queries) {
+          v.eose(sub, c);
+        }
+      }
+    });
+    this.#pool.on("auth", (_, c, r, cb) => this.emit("auth", c, r, cb));
+    this.#pool.on("notice", (addr, msg) => {
+      this.#log("NOTICE: %s %s", addr, msg);
+    });
+
+    // internal handler for on-event
+    this.on("event", (sub, ev) => {
+      for (const [, v] of this.Queries) {
+        v.handleEvent(sub, ev);
+      }
+    });
   }
 
   get ProfileLoader() {
@@ -118,7 +178,7 @@ export class NostrSystem extends EventEmitter<NostrSystemEvents> implements Syst
   }
 
   get Sockets(): ConnectionStateSnapshot[] {
-    return [...this.#sockets.values()].map(a => a.takeSnapshot());
+    return this.#pool.getState();
   }
 
   get RelayCache(): RelayCache {
@@ -129,9 +189,6 @@ export class NostrSystem extends EventEmitter<NostrSystemEvents> implements Syst
     return this.#queryOptimizer;
   }
 
-  /**
-   * Setup caches
-   */
   async Init() {
     const t = [
       this.#relayCache.preload(),
@@ -142,109 +199,16 @@ export class NostrSystem extends EventEmitter<NostrSystemEvents> implements Syst
     await Promise.all(t);
   }
 
-  /**
-   * Connect to a NOSTR relay if not already connected
-   */
   async ConnectToRelay(address: string, options: RelaySettings) {
-    const addr = unwrap(sanitizeRelayUrl(address));
-    try {
-      const existing = this.#sockets.get(addr);
-      if (!existing) {
-        const c = new Connection(addr, options);
-        this.#sockets.set(addr, c);
-        c.on("event", (s, e) => this.#onEvent(s, e));
-        c.on("eose", s => this.#onEndOfStoredEvents(c, s));
-        c.on("disconnect", code => this.#onRelayDisconnect(c, code));
-        c.on("connected", r => this.#onRelayConnected(c, r));
-        c.on("auth", (c, r, cb) => this.emit("auth", c, r, cb));
-        await c.Connect();
-      } else {
-        // update settings if already connected
-        existing.Settings = options;
-        existing.Ephemeral = false;
-      }
-    } catch (e) {
-      console.error(e);
-      this.#relayMetrics.onDisconnect(addr, 0);
-    }
+    await this.#pool.connect(address, options, false);
   }
 
-  #onRelayConnected(c: Connection, wasReconnect: boolean) {
-    this.#relayMetrics.onConnect(c.Address);
-    if (wasReconnect) {
-      for (const [, q] of this.Queries) {
-        q.connectionRestored(c);
-      }
-    }
+  ConnectEphemeralRelay(address: string) {
+    return this.#pool.connect(address, { read: true, write: true }, true);
   }
 
-  #onRelayDisconnect(c: Connection, code: number) {
-    this.#relayMetrics.onDisconnect(c.Address, code);
-    for (const [, q] of this.Queries) {
-      q.connectionLost(c.Id);
-    }
-  }
-
-  #onEndOfStoredEvents(c: Readonly<Connection>, sub: string) {
-    for (const [, v] of this.Queries) {
-      v.eose(sub, c);
-    }
-  }
-
-  #onEvent(sub: string, ev: TaggedNostrEvent) {
-    ev.relays?.length && this.#relayMetrics.onEvent(ev.relays[0]);
-
-    if (!EventExt.isValid(ev)) {
-      this.#log("Rejecting invalid event %O", ev);
-      return;
-    }
-    if (this.checkSigs) {
-      const id = EventExt.createId(ev);
-      if (!this.#queryOptimizer.schnorrVerify(id, ev.sig, ev.pubkey)) {
-        this.#log("Invalid sig %O", ev);
-        return;
-      }
-    }
-
-    this.emit("event", ev);
-
-    for (const [, v] of this.Queries) {
-      v.handleEvent(sub, ev);
-    }
-  }
-
-  /**
-   *
-   * @param address Relay address URL
-   */
-  async ConnectEphemeralRelay(address: string): Promise<Connection | undefined> {
-    try {
-      const addr = unwrap(sanitizeRelayUrl(address));
-      if (!this.#sockets.has(addr)) {
-        const c = new Connection(addr, { read: true, write: true }, true);
-        this.#sockets.set(addr, c);
-        c.on("event", (s, e) => this.#onEvent(s, e));
-        c.on("eose", s => this.#onEndOfStoredEvents(c, s));
-        c.on("disconnect", code => this.#onRelayDisconnect(c, code));
-        c.on("connected", r => this.#onRelayConnected(c, r));
-        c.on("auth", (c, r, cb) => this.emit("auth", c, r, cb));
-        await c.Connect();
-        return c;
-      }
-    } catch (e) {
-      console.error(e);
-    }
-  }
-
-  /**
-   * Disconnect from a relay
-   */
   DisconnectRelay(address: string) {
-    const c = this.#sockets.get(address);
-    if (c) {
-      this.#sockets.delete(address);
-      c.Close();
-    }
+    this.#pool.disconnect(address);
   }
 
   GetQuery(id: string): Query | undefined {
@@ -354,7 +318,7 @@ export class NostrSystem extends EventEmitter<NostrSystemEvents> implements Syst
 
     if (qSend.relay) {
       this.#log("Sending query to %s %O", qSend.relay, qSend);
-      const s = this.#sockets.get(qSend.relay);
+      const s = this.#pool.getConnection(qSend.relay);
       if (s) {
         const qt = q.sendToRelay(s, qSend);
         if (qt) {
@@ -373,7 +337,7 @@ export class NostrSystem extends EventEmitter<NostrSystemEvents> implements Syst
       }
     } else {
       const ret = [];
-      for (const [a, s] of this.#sockets) {
+      for (const [a, s] of this.#pool) {
         if (!s.Ephemeral) {
           this.#log("Sending query to %s %O", a, qSend);
           const qt = q.sendToRelay(s, qSend);
@@ -388,58 +352,16 @@ export class NostrSystem extends EventEmitter<NostrSystemEvents> implements Syst
   }
 
   HandleEvent(ev: TaggedNostrEvent) {
-    this.#onEvent("*", ev);
+    this.emit("event", "*", ev);
   }
 
-  /**
-   * Send events to writable relays
-   */
-  async BroadcastEvent(ev: NostrEvent, cb?: (rsp: OkResponse) => void) {
+  async BroadcastEvent(ev: NostrEvent, cb?: (rsp: OkResponse) => void): Promise<OkResponse[]> {
     this.HandleEvent({ ...ev, relays: [] });
-    const socks = [...this.#sockets.values()].filter(a => !a.Ephemeral && a.Settings.write);
-    const replyRelays = await pickRelaysForReply(ev, this);
-    const oks = await Promise.all([
-      ...socks.map(async s => {
-        try {
-          const rsp = await s.SendAsync(ev);
-          cb?.(rsp);
-          return rsp;
-        } catch (e) {
-          console.error(e);
-        }
-        return;
-      }),
-      ...replyRelays.filter(a => !this.#sockets.has(a)).map(a => this.WriteOnceToRelay(a, ev)),
-    ]);
-    return removeUndefined(oks);
+    return await this.#pool.broadcast(this, ev, cb);
   }
 
-  /**
-   * Write an event to a relay then disconnect
-   */
   async WriteOnceToRelay(address: string, ev: NostrEvent): Promise<OkResponse> {
-    const addrClean = sanitizeRelayUrl(address);
-    if (!addrClean) {
-      throw new Error("Invalid relay address");
-    }
-
-    const existing = this.#sockets.get(addrClean);
-    if (existing) {
-      return await existing.SendAsync(ev);
-    } else {
-      return await new Promise<OkResponse>((resolve, reject) => {
-        const c = new Connection(address, { write: true, read: true }, true);
-
-        const t = setTimeout(reject, 10_000);
-        c.once("connected", async () => {
-          clearTimeout(t);
-          const rsp = await c.SendAsync(ev);
-          c.Close();
-          resolve(rsp);
-        });
-        c.Connect();
-      });
-    }
+    return await this.#pool.broadcastTo(address, ev);
   }
 
   takeSnapshot(): SystemSnapshot {
diff --git a/packages/system/src/worker/index.ts b/packages/system/src/worker/index.ts
new file mode 100644
index 00000000..8d2372d9
--- /dev/null
+++ b/packages/system/src/worker/index.ts
@@ -0,0 +1,14 @@
+
+export const enum NostrSystemCommand {
+    OkResponse,
+    ErrorResponse,
+    Init,
+    ConnectRelay,
+    DisconnectRelay
+}
+
+export interface NostrSystemMessage<T> {
+  id: string;
+  type: NostrSystemCommand;
+  data: T;
+}
diff --git a/packages/system/src/worker/system-worker-script.ts b/packages/system/src/worker/system-worker-script.ts
new file mode 100644
index 00000000..abe2bcce
--- /dev/null
+++ b/packages/system/src/worker/system-worker-script.ts
@@ -0,0 +1,59 @@
+/// <reference lib="webworker" />
+
+import { NostrSystem, NostrsystemProps } from "../nostr-system";
+import { NostrSystemMessage, NostrSystemCommand } from ".";
+
+let system: NostrSystem | undefined;
+
+function reply<T>(id: string, type: NostrSystemCommand, data: T) {
+  globalThis.postMessage({
+    id,
+    type,
+    data,
+  } as NostrSystemMessage<T>);
+}
+function okReply(id: string, message?: string) {
+  reply<string | undefined>(id, NostrSystemCommand.OkResponse, message);
+}
+function errorReply(id: string, message: string) {
+  reply<string>(id, NostrSystemCommand.ErrorResponse, message);
+}
+function checkInitialized() {
+  if (system === undefined) {
+    throw new Error("System not initialized");
+  }
+}
+
+globalThis.onmessage = async ev => {
+  const data = ev.data as { id: string; type: NostrSystemCommand };
+  try {
+    switch (data.type) {
+      case NostrSystemCommand.Init: {
+        const cmd = ev.data as NostrSystemMessage<NostrsystemProps>;
+        if (system === undefined) {
+          system = new NostrSystem(cmd.data);
+          await system.Init();
+          okReply(data.id);
+        } else {
+          errorReply(data.id, "System is already initialized");
+        }
+        break;
+      }
+      case NostrSystemCommand.ConnectRelay: {
+        checkInitialized();
+        const cmd = ev.data as NostrSystemMessage<[string, {read: boolean, write: boolean}]>;
+        await system?.ConnectToRelay(cmd.data[0], cmd.data[1]);
+        okReply(data.id, "Connected");
+        break;
+      }
+      default: {
+        errorReply(data.id, "Unknown command");
+        break;
+      }
+    }
+  } catch (e) {
+    if (e instanceof Error) {
+      errorReply(data.id, e.message);
+    }
+  }
+};
diff --git a/packages/system/src/worker/system-worker.ts b/packages/system/src/worker/system-worker.ts
new file mode 100644
index 00000000..3ebd4130
--- /dev/null
+++ b/packages/system/src/worker/system-worker.ts
@@ -0,0 +1,109 @@
+import { v4 as uuid } from "uuid";
+import EventEmitter from "eventemitter3";
+import {
+  ConnectionStateSnapshot,
+  NostrEvent,
+  NoteStore,
+  OkResponse,
+  ProfileLoaderService,
+  QueryOptimizer,
+  RelayCache,
+  RelaySettings,
+  RequestBuilder,
+  SystemInterface,
+  TaggedNostrEvent,
+} from "..";
+import { NostrSystemEvents, NostrsystemProps } from "../nostr-system";
+import { Query } from "../query";
+import { NostrSystemCommand, NostrSystemMessage } from ".";
+
+export class SystemWorker extends EventEmitter<NostrSystemEvents> implements SystemInterface {
+  #worker: Worker;
+  #commandQueue: Map<string, (v: unknown) => void> = new Map();
+  checkSigs: boolean;
+
+  constructor(scriptPath: string, props: NostrsystemProps) {
+    super();
+    this.checkSigs = props.checkSigs ?? false;
+
+    this.#worker = new Worker(scriptPath, {
+      name: "SystemWorker",
+    });
+  }
+
+  get Sockets(): ConnectionStateSnapshot[] {
+    throw new Error("Method not implemented.");
+  }
+
+  async Init() {
+    await this.#workerRpc<void, string>(NostrSystemCommand.Init, undefined);
+  }
+
+  GetQuery(id: string): Query | undefined {
+    return undefined;
+  }
+
+  Query<T extends NoteStore>(type: new () => T, req: RequestBuilder): Query {
+    throw new Error("Method not implemented.");
+  }
+
+  Fetch(req: RequestBuilder, cb?: ((evs: TaggedNostrEvent[]) => void) | undefined): Promise<TaggedNostrEvent[]> {
+    throw new Error("Method not implemented.");
+  }
+
+  ConnectToRelay(address: string, options: RelaySettings): Promise<void> {
+    throw new Error("Method not implemented.");
+  }
+
+  DisconnectRelay(address: string): void {
+    throw new Error("Method not implemented.");
+  }
+
+  HandleEvent(ev: TaggedNostrEvent): void {
+    throw new Error("Method not implemented.");
+  }
+
+  BroadcastEvent(ev: NostrEvent, cb?: ((rsp: OkResponse) => void) | undefined): Promise<OkResponse[]> {
+    throw new Error("Method not implemented.");
+  }
+
+  WriteOnceToRelay(relay: string, ev: NostrEvent): Promise<OkResponse> {
+    throw new Error("Method not implemented.");
+  }
+
+  get ProfileLoader(): ProfileLoaderService {
+    throw new Error("Method not implemented.");
+  }
+
+  get RelayCache(): RelayCache {
+    throw new Error("Method not implemented.");
+  }
+
+  get QueryOptimizer(): QueryOptimizer {
+    throw new Error("Method not implemented.");
+  }
+
+  #workerRpc<T, R>(type: NostrSystemCommand, data: T, timeout = 5_000) {
+    const id = uuid();
+    this.#worker.postMessage({
+      id,
+      type,
+      data,
+    } as NostrSystemMessage<T>);
+    return new Promise<R>((resolve, reject) => {
+      let t: ReturnType<typeof setTimeout>;
+      this.#commandQueue.set(id, v => {
+        clearTimeout(t);
+        const cmdReply = v as NostrSystemMessage<R>;
+        if (cmdReply.type === NostrSystemCommand.OkResponse) {
+          resolve(cmdReply.data);
+        } else {
+          reject(cmdReply.data);
+        }
+      });
+      t = setTimeout(() => {
+        reject("timeout");
+      }, timeout);
+    });
+  }
+}