diff --git a/js/channelProfile.js b/js/channelProfile.js
index 4f874e34..6e63526c 100644
--- a/js/channelProfile.js
+++ b/js/channelProfile.js
@@ -2,9 +2,9 @@
 
 import {
   nostrClient,
-  DEFAULT_RELAY_URLS,
-  convertEventToVideo as sharedConvertEventToVideo
+  convertEventToVideo as sharedConvertEventToVideo,
 } from "./nostr.js";
+import { DEFAULT_RELAY_URLS } from "./nostr/toolkit.js";
 import { subscriptions } from "./subscriptions.js";
 import { attachHealthBadges } from "./gridHealth.js";
 import { attachUrlHealthBadges } from "./urlHealthObserver.js";
diff --git a/js/nostr.js b/js/nostr.js
index 4a8d0566..6dd444b3 100644
--- a/js/nostr.js
+++ b/js/nostr.js
@@ -44,23 +44,17 @@ import {
   assertAnyRelayAccepted,
   summarizePublishResults,
 } from "./nostrPublish.js";
-import { nostrToolsReady } from "./nostrToolsBootstrap.js";
+import {
+  DEFAULT_RELAY_URLS,
+  RELAY_URLS,
+  ensureNostrTools,
+  getCachedNostrTools,
+  nostrToolsBootstrapFailure,
+  readToolkitFromScope,
+  resolveSimplePoolConstructor,
+} from "./nostr/toolkit.js";
 import { devLogger, userLogger } from "./utils/logger.js";
 
-/**
- * The default relay set bitvid bootstraps with before loading a user's
- * preferences.
- */
-export const DEFAULT_RELAY_URLS = Object.freeze([
-  "wss://relay.damus.io",
-  "wss://nos.lol",
-  "wss://relay.snort.social",
-  "wss://relay.primal.net",
-  "wss://relay.nostr.band",
-]);
-
-const RELAY_URLS = Array.from(DEFAULT_RELAY_URLS);
-
 let activeSigner = null;
 
 const EVENTS_CACHE_STORAGE_KEY = "bitvid:eventsCache:v1";
@@ -413,215 +407,6 @@ const VIEW_EVENT_KIND = Number.isFinite(VIEW_EVENT_SCHEMA?.kind)
   ? VIEW_EVENT_SCHEMA.kind
   : 30079;
 
-const globalScope =
-  typeof window !== "undefined"
-    ? window
-    : typeof globalThis !== "undefined"
-    ? globalThis
-    : null;
-
-const nostrToolsReadySource =
-  globalScope &&
-  globalScope.nostrToolsReady &&
-  typeof globalScope.nostrToolsReady.then === "function"
-    ? globalScope.nostrToolsReady
-    : nostrToolsReady;
-
-function normalizeToolkitCandidate(candidate) {
-  if (
-    candidate &&
-    typeof candidate === "object" &&
-    candidate.ok !== false &&
-    typeof candidate.then !== "function"
-  ) {
-    return candidate;
-  }
-  return null;
-}
-
-function readToolkitFromScope(scope = globalScope) {
-  if (!scope || typeof scope !== "object") {
-    return null;
-  }
-
-  const candidates = [];
-
-  const canonical = scope.__BITVID_CANONICAL_NOSTR_TOOLS__;
-  if (canonical) {
-    candidates.push(canonical);
-  }
-
-  const direct = scope.NostrTools;
-  if (direct) {
-    candidates.push(direct);
-  }
-
-  const nestedWindow =
-    scope.window && scope.window !== scope && typeof scope.window === "object"
-      ? scope.window
-      : null;
-  if (nestedWindow) {
-    if (nestedWindow.__BITVID_CANONICAL_NOSTR_TOOLS__) {
-      candidates.push(nestedWindow.__BITVID_CANONICAL_NOSTR_TOOLS__);
-    }
-    if (nestedWindow.NostrTools) {
-      candidates.push(nestedWindow.NostrTools);
-    }
-  }
-
-  for (const candidate of candidates) {
-    const normalized = normalizeToolkitCandidate(candidate);
-    if (normalized) {
-      return normalized;
-    }
-  }
-
-  return null;
-}
-
-const __nostrToolsBootstrapResult = await (async () => {
-  try {
-    const result = await nostrToolsReadySource;
-    if (result && typeof result === "object" && result.ok === false) {
-      return {
-        toolkit: normalizeToolkitCandidate(readToolkitFromScope()),
-        failure: result,
-      };
-    }
-
-    const normalized = normalizeToolkitCandidate(result);
-    if (normalized) {
-      return { toolkit: normalized, failure: null };
-    }
-
-    return {
-      toolkit: normalizeToolkitCandidate(readToolkitFromScope()),
-      failure: null,
-    };
-  } catch (error) {
-    return {
-      toolkit: normalizeToolkitCandidate(readToolkitFromScope()),
-      failure: error,
-    };
-  }
-})();
-
-let cachedNostrTools = __nostrToolsBootstrapResult.toolkit || null;
-const nostrToolsBootstrapFailure = __nostrToolsBootstrapResult.failure || null;
-
-if (!cachedNostrTools && nostrToolsBootstrapFailure && isDevMode) {
-  userLogger.warn(
-    "[nostr] nostr-tools helpers unavailable after bootstrap.",
-    nostrToolsBootstrapFailure
-  );
-}
-
-function rememberNostrTools(candidate) {
-  const normalized = normalizeToolkitCandidate(candidate);
-  if (normalized) {
-    cachedNostrTools = normalized;
-  }
-}
-
-function getCachedNostrTools() {
-  const fallback = readToolkitFromScope();
-  if (cachedNostrTools && fallback && fallback !== cachedNostrTools) {
-    rememberNostrTools(fallback);
-  } else if (!cachedNostrTools && fallback) {
-    rememberNostrTools(fallback);
-  }
-  return cachedNostrTools || fallback || null;
-}
-
-async function ensureNostrTools() {
-  if (cachedNostrTools) {
-    return cachedNostrTools;
-  }
-
-  try {
-    const result = await nostrToolsReadySource;
-    rememberNostrTools(result);
-  } catch (error) {
-    devLogger.warn("[nostr] Failed to resolve nostr-tools helpers.", error);
-  }
-
-  if (!cachedNostrTools) {
-    rememberNostrTools(readToolkitFromScope());
-  }
-
-  return cachedNostrTools || null;
-}
-
-function isSimplePoolConstructor(candidate) {
-  if (typeof candidate !== "function") {
-    return false;
-  }
-
-  const prototype = candidate.prototype;
-  if (!prototype || typeof prototype !== "object") {
-    return false;
-  }
-
-  return typeof prototype.sub === "function" && typeof prototype.close === "function";
-}
-
-function unwrapSimplePool(candidate) {
-  if (!candidate) {
-    return null;
-  }
-
-  if (isSimplePoolConstructor(candidate)) {
-    return candidate;
-  }
-
-  if (typeof candidate === "object") {
-    if (isSimplePoolConstructor(candidate.SimplePool)) {
-      return candidate.SimplePool;
-    }
-    if (isSimplePoolConstructor(candidate.default)) {
-      return candidate.default;
-    }
-  }
-
-  return null;
-}
-
-function resolveSimplePoolConstructor(tools, scope = globalScope) {
-  const candidates = [
-    tools?.SimplePool,
-    tools?.pool?.SimplePool,
-    tools?.pool,
-    tools?.SimplePool?.SimplePool,
-    tools?.SimplePool?.default,
-    tools?.pool?.default,
-    tools?.default?.SimplePool,
-    tools?.default?.pool?.SimplePool,
-    tools?.default?.pool,
-  ];
-
-  if (scope && typeof scope === "object") {
-    candidates.push(scope?.SimplePool);
-    candidates.push(scope?.pool?.SimplePool);
-    candidates.push(scope?.pool);
-    const scopedTools =
-      scope?.NostrTools && scope.NostrTools !== tools ? scope.NostrTools : null;
-    if (scopedTools) {
-      candidates.push(scopedTools.SimplePool);
-      candidates.push(scopedTools.pool?.SimplePool);
-      candidates.push(scopedTools.pool);
-    }
-  }
-
-  for (const candidate of candidates) {
-    const resolved = unwrapSimplePool(candidate);
-    if (resolved) {
-      return resolved;
-    }
-  }
-
-  return null;
-}
-
 let ingestLocalViewEventRef = null;
 
 async function loadIngestLocalViewEvent() {
@@ -5188,7 +4973,7 @@ function decodeNpubToHex(npub) {
     trimmed
   );
 
-  let tools = cachedNostrTools;
+  let tools = getCachedNostrTools();
   if (!tools || typeof tools?.nip19?.decode !== "function") {
     const fallbackTools = readToolkitFromScope();
     if (fallbackTools) {
diff --git a/js/nostr/toolkit.js b/js/nostr/toolkit.js
new file mode 100644
index 00000000..30f35015
--- /dev/null
+++ b/js/nostr/toolkit.js
@@ -0,0 +1,234 @@
+// js/nostr/toolkit.js
+
+import { isDevMode } from "../config.js";
+import { nostrToolsReady } from "../nostrToolsBootstrap.js";
+import { devLogger, userLogger } from "../utils/logger.js";
+
+/**
+ * The default relay set bitvid bootstraps with before loading a user's
+ * preferences.
+ */
+export const DEFAULT_RELAY_URLS = Object.freeze([
+  "wss://relay.damus.io",
+  "wss://nos.lol",
+  "wss://relay.snort.social",
+  "wss://relay.primal.net",
+  "wss://relay.nostr.band",
+]);
+
+export const RELAY_URLS = Array.from(DEFAULT_RELAY_URLS);
+
+const globalScope =
+  typeof window !== "undefined"
+    ? window
+    : typeof globalThis !== "undefined"
+    ? globalThis
+    : null;
+
+const nostrToolsReadySource =
+  globalScope &&
+  globalScope.nostrToolsReady &&
+  typeof globalScope.nostrToolsReady.then === "function"
+    ? globalScope.nostrToolsReady
+    : nostrToolsReady;
+
+export function normalizeToolkitCandidate(candidate) {
+  if (
+    candidate &&
+    typeof candidate === "object" &&
+    candidate.ok !== false &&
+    typeof candidate.then !== "function"
+  ) {
+    return candidate;
+  }
+  return null;
+}
+
+export function readToolkitFromScope(scope = globalScope) {
+  if (!scope || typeof scope !== "object") {
+    return null;
+  }
+
+  const candidates = [];
+
+  const canonical = scope.__BITVID_CANONICAL_NOSTR_TOOLS__;
+  if (canonical) {
+    candidates.push(canonical);
+  }
+
+  const direct = scope.NostrTools;
+  if (direct) {
+    candidates.push(direct);
+  }
+
+  const nestedWindow =
+    scope.window && scope.window !== scope && typeof scope.window === "object"
+      ? scope.window
+      : null;
+  if (nestedWindow) {
+    if (nestedWindow.__BITVID_CANONICAL_NOSTR_TOOLS__) {
+      candidates.push(nestedWindow.__BITVID_CANONICAL_NOSTR_TOOLS__);
+    }
+    if (nestedWindow.NostrTools) {
+      candidates.push(nestedWindow.NostrTools);
+    }
+  }
+
+  for (const candidate of candidates) {
+    const normalized = normalizeToolkitCandidate(candidate);
+    if (normalized) {
+      return normalized;
+    }
+  }
+
+  return null;
+}
+
+const __nostrToolsBootstrapResult = await (async () => {
+  try {
+    const result = await nostrToolsReadySource;
+    if (result && typeof result === "object" && result.ok === false) {
+      return {
+        toolkit: normalizeToolkitCandidate(readToolkitFromScope()),
+        failure: result,
+      };
+    }
+
+    const normalized = normalizeToolkitCandidate(result);
+    if (normalized) {
+      return { toolkit: normalized, failure: null };
+    }
+
+    return {
+      toolkit: normalizeToolkitCandidate(readToolkitFromScope()),
+      failure: null,
+    };
+  } catch (error) {
+    return {
+      toolkit: normalizeToolkitCandidate(readToolkitFromScope()),
+      failure: error,
+    };
+  }
+})();
+
+let cachedNostrTools = __nostrToolsBootstrapResult.toolkit || null;
+export const nostrToolsBootstrapFailure =
+  __nostrToolsBootstrapResult.failure || null;
+
+if (!cachedNostrTools && nostrToolsBootstrapFailure && isDevMode) {
+  userLogger.warn(
+    "[nostr] nostr-tools helpers unavailable after bootstrap.",
+    nostrToolsBootstrapFailure
+  );
+}
+
+export function rememberNostrTools(candidate) {
+  const normalized = normalizeToolkitCandidate(candidate);
+  if (normalized) {
+    cachedNostrTools = normalized;
+  }
+}
+
+export function getCachedNostrTools() {
+  const fallback = readToolkitFromScope();
+  if (cachedNostrTools && fallback && fallback !== cachedNostrTools) {
+    rememberNostrTools(fallback);
+  } else if (!cachedNostrTools && fallback) {
+    rememberNostrTools(fallback);
+  }
+  return cachedNostrTools || fallback || null;
+}
+
+export async function ensureNostrTools() {
+  if (cachedNostrTools) {
+    return cachedNostrTools;
+  }
+
+  try {
+    const result = await nostrToolsReadySource;
+    rememberNostrTools(result);
+  } catch (error) {
+    devLogger.warn("[nostr] Failed to resolve nostr-tools helpers.", error);
+  }
+
+  if (!cachedNostrTools) {
+    rememberNostrTools(readToolkitFromScope());
+  }
+
+  return cachedNostrTools || null;
+}
+
+function isSimplePoolConstructor(candidate) {
+  if (typeof candidate !== "function") {
+    return false;
+  }
+
+  const prototype = candidate.prototype;
+  if (!prototype || typeof prototype !== "object") {
+    return false;
+  }
+
+  return (
+    typeof prototype.sub === "function" &&
+    typeof prototype.close === "function"
+  );
+}
+
+function unwrapSimplePool(candidate) {
+  if (!candidate) {
+    return null;
+  }
+
+  if (isSimplePoolConstructor(candidate)) {
+    return candidate;
+  }
+
+  if (typeof candidate === "object") {
+    if (isSimplePoolConstructor(candidate.SimplePool)) {
+      return candidate.SimplePool;
+    }
+    if (isSimplePoolConstructor(candidate.default)) {
+      return candidate.default;
+    }
+  }
+
+  return null;
+}
+
+export function resolveSimplePoolConstructor(tools, scope = globalScope) {
+  const candidates = [
+    tools?.SimplePool,
+    tools?.pool?.SimplePool,
+    tools?.pool,
+    tools?.SimplePool?.SimplePool,
+    tools?.SimplePool?.default,
+    tools?.pool?.default,
+    tools?.default?.SimplePool,
+    tools?.default?.pool?.SimplePool,
+    tools?.default?.pool,
+  ];
+
+  if (scope && typeof scope === "object") {
+    candidates.push(scope?.SimplePool);
+    candidates.push(scope?.pool?.SimplePool);
+    candidates.push(scope?.pool);
+    const scopedTools =
+      scope?.NostrTools && scope.NostrTools !== tools ? scope.NostrTools : null;
+    if (scopedTools) {
+      candidates.push(scopedTools.SimplePool);
+      candidates.push(scopedTools.pool?.SimplePool);
+      candidates.push(scopedTools.pool);
+    }
+  }
+
+  for (const candidate of candidates) {
+    const resolved = unwrapSimplePool(candidate);
+    if (resolved) {
+      return resolved;
+    }
+  }
+
+  return null;
+}
+
+export { isSimplePoolConstructor, unwrapSimplePool };
diff --git a/js/relayManager.js b/js/relayManager.js
index 114afa1b..85db9a86 100644
--- a/js/relayManager.js
+++ b/js/relayManager.js
@@ -1,6 +1,6 @@
 import { isDevMode } from "./config.js";
+import { DEFAULT_RELAY_URLS } from "./nostr/toolkit.js";
 import {
-  DEFAULT_RELAY_URLS,
   getActiveSigner,
   nostrClient,
   requestDefaultExtensionPermissions,
diff --git a/js/subscriptions.js b/js/subscriptions.js
index f4f3ba40..4b04c137 100644
--- a/js/subscriptions.js
+++ b/js/subscriptions.js
@@ -4,8 +4,8 @@ import {
   nostrClient,
   convertEventToVideo as sharedConvertEventToVideo,
   requestDefaultExtensionPermissions,
-  DEFAULT_RELAY_URLS,
 } from "./nostr.js";
+import { DEFAULT_RELAY_URLS } from "./nostr/toolkit.js";
 import {
   buildSubscriptionListEvent,
   SUBSCRIPTION_LIST_IDENTIFIER
diff --git a/tests/nostr/toolkit.test.mjs b/tests/nostr/toolkit.test.mjs
new file mode 100644
index 00000000..6a700dbf
--- /dev/null
+++ b/tests/nostr/toolkit.test.mjs
@@ -0,0 +1,167 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+const originalCanonical = globalThis.__BITVID_CANONICAL_NOSTR_TOOLS__;
+const originalNostrTools = globalThis.NostrTools;
+const originalNostrToolsReady = globalThis.nostrToolsReady;
+
+class BootstrapSimplePool {
+  sub() {}
+  close() {}
+}
+
+const bootstrapToolkit = {
+  ok: true,
+  nip19: {
+    decode: (value) => value,
+    npubEncode: (value) => value,
+  },
+  SimplePool: BootstrapSimplePool,
+};
+
+globalThis.__BITVID_CANONICAL_NOSTR_TOOLS__ = bootstrapToolkit;
+globalThis.NostrTools = bootstrapToolkit;
+globalThis.nostrToolsReady = Promise.resolve(bootstrapToolkit);
+
+const toolkitModule = await import("../../js/nostr/toolkit.js");
+const {
+  rememberNostrTools,
+  getCachedNostrTools,
+  ensureNostrTools,
+  resolveSimplePoolConstructor,
+} = toolkitModule;
+
+const baselineToolkit = getCachedNostrTools() || bootstrapToolkit;
+
+test.after(() => {
+  if (originalCanonical === undefined) {
+    delete globalThis.__BITVID_CANONICAL_NOSTR_TOOLS__;
+  } else {
+    globalThis.__BITVID_CANONICAL_NOSTR_TOOLS__ = originalCanonical;
+  }
+
+  if (originalNostrTools === undefined) {
+    delete globalThis.NostrTools;
+  } else {
+    globalThis.NostrTools = originalNostrTools;
+  }
+
+  if (originalNostrToolsReady === undefined) {
+    delete globalThis.nostrToolsReady;
+  } else {
+    globalThis.nostrToolsReady = originalNostrToolsReady;
+  }
+
+  rememberNostrTools(baselineToolkit);
+});
+
+test("ensureNostrTools resolves the cached toolkit", async () => {
+  class CachedSimplePool {
+    sub() {}
+    close() {}
+  }
+
+  const cachedToolkit = {
+    ok: true,
+    nip19: {
+      decode: (value) => value,
+      npubEncode: (value) => value,
+    },
+    SimplePool: CachedSimplePool,
+  };
+
+  const previousCanonicalForTest = globalThis.__BITVID_CANONICAL_NOSTR_TOOLS__;
+  const previousNostrToolsForTest = globalThis.NostrTools;
+
+  globalThis.__BITVID_CANONICAL_NOSTR_TOOLS__ = cachedToolkit;
+  globalThis.NostrTools = cachedToolkit;
+  rememberNostrTools(cachedToolkit);
+
+  try {
+    const ensured = await ensureNostrTools();
+    assert.strictEqual(ensured, cachedToolkit);
+  } finally {
+    if (previousCanonicalForTest === undefined) {
+      delete globalThis.__BITVID_CANONICAL_NOSTR_TOOLS__;
+    } else {
+      globalThis.__BITVID_CANONICAL_NOSTR_TOOLS__ = previousCanonicalForTest;
+    }
+
+    if (previousNostrToolsForTest === undefined) {
+      delete globalThis.NostrTools;
+    } else {
+      globalThis.NostrTools = previousNostrToolsForTest;
+    }
+
+    rememberNostrTools(baselineToolkit);
+  }
+});
+
+test("resolveSimplePoolConstructor handles supported permutations", () => {
+  class MockSimplePool {
+    sub() {}
+    close() {}
+  }
+
+  const variations = [
+    { label: "tools.SimplePool", tools: { SimplePool: MockSimplePool } },
+    { label: "tools.pool.SimplePool", tools: { pool: { SimplePool: MockSimplePool } } },
+    { label: "tools.pool constructor", tools: { pool: MockSimplePool } },
+    {
+      label: "tools.SimplePool.SimplePool",
+      tools: { SimplePool: { SimplePool: MockSimplePool } },
+    },
+    {
+      label: "tools.SimplePool.default",
+      tools: { SimplePool: { default: MockSimplePool } },
+    },
+    { label: "tools.pool.default", tools: { pool: { default: MockSimplePool } } },
+    {
+      label: "tools.default.SimplePool",
+      tools: { default: { SimplePool: MockSimplePool } },
+    },
+    {
+      label: "tools.default.pool.SimplePool",
+      tools: { default: { pool: { SimplePool: MockSimplePool } } },
+    },
+    {
+      label: "tools.default.pool constructor",
+      tools: { default: { pool: MockSimplePool } },
+    },
+  ];
+
+  for (const { label, tools } of variations) {
+    assert.strictEqual(
+      resolveSimplePoolConstructor(tools),
+      MockSimplePool,
+      `expected ${label}`
+    );
+  }
+
+  assert.strictEqual(
+    resolveSimplePoolConstructor({}, { SimplePool: MockSimplePool }),
+    MockSimplePool,
+    "scope.SimplePool fallback"
+  );
+
+  assert.strictEqual(
+    resolveSimplePoolConstructor({}, { pool: { SimplePool: MockSimplePool } }),
+    MockSimplePool,
+    "scope.pool.SimplePool fallback"
+  );
+
+  assert.strictEqual(
+    resolveSimplePoolConstructor(
+      {},
+      { NostrTools: { pool: { SimplePool: MockSimplePool } } }
+    ),
+    MockSimplePool,
+    "scope.NostrTools.pool.SimplePool fallback"
+  );
+
+  assert.strictEqual(
+    resolveSimplePoolConstructor({}, {}),
+    null,
+    "returns null when no candidates are available"
+  );
+});