diff --git a/marketing/positioning.md b/marketing/positioning.md
index 511b2aa..c328902 100644
--- a/marketing/positioning.md
+++ b/marketing/positioning.md
@@ -9,7 +9,7 @@ Primary source: `~/Code/the-nook/docs/marketing-strategy.md`.
 ## The sentence
 
 > **Your Mac and your agents, under control.** The Nook puts your whole coding-agent
-> fleet in the notch — twelve agents, local or over SSH — so you see what is running,
+> fleet in the notch — thirteen agents, local or over SSH — so you see what is running,
 > unblock it in one tap, and keep the machine from overheating while it works.
 
 ## The wedge
@@ -50,7 +50,7 @@ pages, marketing copy, comparison tables, meta descriptions, emails, FAQs, all o
 
 ### 2. A claim requires a test to exist
 
-Copy that says "12 agents" or "no data leaves the device" must have a test backing it.
+Copy that says "13 agents" or "no data leaves the device" must have a test backing it.
 If a claim cannot be pointed at code or a test, it does not go in copy.
 
 ### 3. Honest privacy scoping
@@ -77,7 +77,7 @@ nothing posts itself.
 
 | Claim | Backing |
 |---|---|
-| Twelve hooked agents, one glance | `AgentSpec.all` — claude, codex, opencode, pi, omp, hermes, openclaw, zai, gemini, cline, qwen, deepseek |
+| Thirteen hooked agents, one glance | `AgentSpec.all` — claude, codex, opencode, pi, omp, muse, hermes, openclaw, zai, gemini, cline, qwen, deepseek |
 | Remote agents over SSH | `hook/setup.go` remote install path; `NOOK_HOST` TCP transport |
 | Permission gate answered from a card | awaitPolicyTable + bridge directive path (`hook/normalize.go`, `serialize.go`) |
 | Fan / thermal / charge control | `helper/` (privileged helper, SMC, no kext) |
@@ -87,7 +87,7 @@ nothing posts itself.
 
 ## Voice
 
-- Short, concrete, no hype adjectives. Numbers over adjectives ("twelve agents",
+- Short, concrete, no hype adjectives. Numbers over adjectives ("thirteen agents",
   "one tap", "$10 once").
 - The notch/island is the product's home; agents are the product's point.
 - Never apologize for being a utility. The utility is the point.
diff --git a/src/routes/nook/agents.test.ts b/src/routes/nook/agents.test.ts
new file mode 100644
index 0000000..2309628
--- /dev/null
+++ b/src/routes/nook/agents.test.ts
@@ -0,0 +1,54 @@
+/**
+ * Regression test for the /agents roster (NOOK-336).
+ *
+ * The page mirrors the app's registry, `AgentSpec.all` in
+ * the-nook/Sources/NookCore/Agents/AgentRegistry.swift. When Muse joined
+ * the registry in 0.10.0 the page kept twelve entries and kept saying
+ * "twelve", so a shipped agent was missing from the one page that lists
+ * them. The registry lives in another repo, so the expected roster is
+ * restated here; when an agent is added there, add it here and on the page.
+ *
+ * STATIC SOURCE AUDIT, the same pattern as the downloads regressions.
+ */
+import { describe, it, expect } from "bun:test";
+import { readFileSync } from "node:fs";
+import { join } from "node:path";
+
+const SOURCE = readFileSync(join(import.meta.dir, "agents.tsx"), "utf8");
+
+/** AgentSpec.all display names, in registry order. */
+const REGISTRY = [
+  "Claude Code",
+  "Codex",
+  "OpenCode",
+  "Pi",
+  "Oh My Pi",
+  "Muse",
+  "Hermes",
+  "OpenClaw",
+  "Z.ai (ZCode)",
+  "Gemini CLI",
+  "Cline",
+  "Qwen Code",
+  "DeepSeek"
+];
+
+const NUMBER_WORDS = ["twelve", "thirteen", "fourteen", "fifteen"];
+
+const entries = [...SOURCE.matchAll(/^\s{4}name: "([^"]+)",$/gm)].map((m) => m[1]);
+
+describe("Nook /agents roster (NOOK-336)", () => {
+  it("lists every registry agent, in registry order", () => {
+    expect(entries).toEqual(REGISTRY);
+  });
+
+  it("states the same count everywhere it names one", () => {
+    const word = NUMBER_WORDS[entries.length - 12];
+    for (const other of NUMBER_WORDS.filter((w) => w !== word)) {
+      expect(SOURCE.toLowerCase()).not.toContain(other);
+    }
+    expect(SOURCE).toContain(`all ${word}`);
+    expect(SOURCE).toContain(`The ${entries.length} agents`);
+    expect(SOURCE).toContain(`watches ${word} coding agents`);
+  });
+});
diff --git a/src/routes/nook/agents.tsx b/src/routes/nook/agents.tsx
index e594cdd..703016c 100644
--- a/src/routes/nook/agents.tsx
+++ b/src/routes/nook/agents.tsx
@@ -105,6 +105,29 @@ const AGENTS: AgentEntry[] = [
     gating:
       "Full — honors the agent's own approval tiers, per-tool policies included"
   },
+  {
+    name: "Muse",
+    wiring:
+      "Plugin at ~/.nook/plugins/muse, installed, approved and enabled through Muse's own plugins CLI; each hook calls the shared hook binary. This Mac only — remote hosts skip it",
+    events: [
+      "SessionStart",
+      "SessionEnd",
+      "UserPromptSubmit",
+      "PreToolUse",
+      "PermissionRequest",
+      "PostToolUse",
+      "PostToolUseFailure",
+      "Stop",
+      "StopFailure",
+      "Notification",
+      "PreCompact",
+      "PostCompact",
+      "SubagentStart",
+      "SubagentStop"
+    ],
+    gating:
+      "Full — permission prompts can be allowed or denied from a card, and every tool call under Verify"
+  },
   {
     name: "Hermes",
     wiring:
@@ -240,8 +263,8 @@ export default function NookAgentsPage() {
       <EdgeCacheHeaders maxAge={300} />
       <PageHead
         title="Supported agents"
-        description="Every coding agent The Nook supports — all twelve, with each hook's exact event coverage and what you can do from a card: watch sessions live, answer permission prompts, unblock work."
-        ogTitle="The 12 agents The Nook supports, and what each hook sees"
+        description="Every coding agent The Nook supports — all thirteen, with each hook's exact event coverage and what you can do from a card: watch sessions live, answer permission prompts, unblock work."
+        ogTitle="The 13 agents The Nook supports, and what each hook sees"
       />
       <SubdomainHeader />
       <main class="min-h-screen px-[8vw] py-[8vh]">
@@ -249,7 +272,7 @@ export default function NookAgentsPage() {
           Supported agents
         </h1>
         <p class="text-subtext0 mb-2 max-w-2xl text-lg">
-          The Nook watches twelve coding agents in one place — your menu bar and
+          The Nook watches thirteen coding agents in one place — your menu bar and
           notch show every session that is running, thinking, or blocked, and a
           card answers permission prompts without leaving your keyboard.
         </p>