diff --git a/services/mcp-server/src/lib/config.ts b/services/mcp-server/src/lib/config.ts
index a00db066..db49ff55 100644
--- a/services/mcp-server/src/lib/config.ts
+++ b/services/mcp-server/src/lib/config.ts
@@ -15,6 +15,7 @@ const envSchema = z.object({
   JARVISJR_BACKEND_URL: z.string().default('http://localhost:4012'),
   CHRONOMIND_BACKEND_URL: z.string().default('http://localhost:4011'),
   NOMGAP_BACKEND_URL: z.string().default('http://localhost:4013'),
+  NOTELETT_BACKEND_URL: z.string().default('http://localhost:4016'),
   PEAKPULSE_BACKEND_URL: z.string().default('http://localhost:4010'),
   BYTELYST_NOTES_BACKEND_URL: z.string().default('http://localhost:4016'),
   /** Max items returned per tool call query (hard cap) */
diff --git a/services/mcp-server/src/lib/notelett-client.ts b/services/mcp-server/src/lib/notelett-client.ts
new file mode 100644
index 00000000..94b27f96
--- /dev/null
+++ b/services/mcp-server/src/lib/notelett-client.ts
@@ -0,0 +1,152 @@
+/**
+ * NoteLett backend client — typed HTTP wrappers for notelett-backend (port 4016).
+ *
+ * Auth: Bearer token from the caller's JWT (same JWT_SECRET as platform-service).
+ */
+
+import { config } from './config.js';
+
+export interface NoteLettClientOptions {
+  token?: string;
+  requestId?: string;
+}
+
+async function noteFetch<T>(
+  path: string,
+  init: RequestInit,
+  opts: NoteLettClientOptions,
+): Promise<T> {
+  const headers: Record<string, string> = {
+    'Content-Type': 'application/json',
+    'x-product-id': 'notelett',
+    ...(opts.token ? { Authorization: `Bearer ${opts.token}` } : {}),
+    ...(opts.requestId ? { 'x-request-id': opts.requestId } : {}),
+  };
+  const res = await fetch(`${config.NOTELETT_BACKEND_URL}/api${path}`, {
+    ...init,
+    headers: { ...((init.headers as Record<string, string>) ?? {}), ...headers },
+    signal: AbortSignal.timeout(15_000),
+  });
+  if (!res.ok) {
+    const body = await res.text().catch(() => '');
+    throw new Error(`notelett-backend ${init.method ?? 'GET'} ${path} → ${res.status}: ${body}`);
+  }
+  if (res.status === 204) return undefined as T;
+  return res.json() as Promise<T>;
+}
+
+// ── Notes ────────────────────────────────────────────────────────────────
+
+export interface NoteDoc {
+  id: string;
+  workspaceId: string;
+  title: string;
+  content: string;
+  status: string;
+  createdAt: string;
+  updatedAt: string;
+}
+
+export function noteLettNotesList(
+  params: { workspaceId: string; limit?: number; offset?: number; search?: string },
+  opts: NoteLettClientOptions,
+): Promise<{ items: NoteDoc[]; total: number }> {
+  const qs = new URLSearchParams();
+  qs.set('workspaceId', params.workspaceId);
+  if (params.limit !== undefined) qs.set('limit', String(params.limit));
+  if (params.offset !== undefined) qs.set('offset', String(params.offset));
+  if (params.search) qs.set('search', params.search);
+  return noteFetch(`/notes?${qs}`, { method: 'GET' }, opts);
+}
+
+export function noteLettNoteGet(
+  noteId: string,
+  opts: NoteLettClientOptions,
+): Promise<NoteDoc> {
+  return noteFetch(`/notes/${noteId}`, { method: 'GET' }, opts);
+}
+
+export function noteLettNoteCreate(
+  input: { workspaceId: string; title: string; content?: string },
+  opts: NoteLettClientOptions,
+): Promise<NoteDoc> {
+  return noteFetch('/notes', { method: 'POST', body: JSON.stringify(input) }, opts);
+}
+
+export function noteLettNoteUpdate(
+  noteId: string,
+  input: { title?: string; content?: string },
+  opts: NoteLettClientOptions,
+): Promise<NoteDoc> {
+  return noteFetch(`/notes/${noteId}`, { method: 'PATCH', body: JSON.stringify(input) }, opts);
+}
+
+export function noteLettNoteDelete(
+  noteId: string,
+  opts: NoteLettClientOptions,
+): Promise<void> {
+  return noteFetch(`/notes/${noteId}`, { method: 'DELETE' }, opts);
+}
+
+export function noteLettNoteSummarize(
+  noteId: string,
+  opts: NoteLettClientOptions,
+): Promise<{ summary: string }> {
+  return noteFetch(`/notes/${noteId}/summarize`, { method: 'POST' }, opts);
+}
+
+// ── Workspaces ───────────────────────────────────────────────────────────
+
+export interface WorkspaceDoc {
+  id: string;
+  name: string;
+  description?: string;
+  createdAt: string;
+}
+
+export function noteLettWorkspacesList(
+  opts: NoteLettClientOptions,
+): Promise<{ items: WorkspaceDoc[]; total: number }> {
+  return noteFetch('/workspaces', { method: 'GET' }, opts);
+}
+
+export function noteLettWorkspaceCreate(
+  input: { name: string; description?: string },
+  opts: NoteLettClientOptions,
+): Promise<WorkspaceDoc> {
+  return noteFetch('/workspaces', { method: 'POST', body: JSON.stringify(input) }, opts);
+}
+
+// ── Note tasks ───────────────────────────────────────────────────────────
+
+export interface NoteTaskDoc {
+  id: string;
+  noteId: string;
+  title: string;
+  status: string;
+  createdAt: string;
+}
+
+export function noteLettNoteTasksList(
+  noteId: string,
+  opts: NoteLettClientOptions,
+): Promise<{ items: NoteTaskDoc[]; total: number }> {
+  return noteFetch(`/note-tasks?noteId=${noteId}`, { method: 'GET' }, opts);
+}
+
+// ── Note artifacts ───────────────────────────────────────────────────────
+
+export interface NoteArtifactDoc {
+  id: string;
+  noteId: string;
+  type: string;
+  content: string;
+  createdAt: string;
+}
+
+export function noteLettNoteArtifactsList(
+  noteId: string,
+  opts: NoteLettClientOptions,
+): Promise<{ items: NoteArtifactDoc[]; total: number }> {
+  return noteFetch(`/note-artifacts?noteId=${noteId}`, { method: 'GET' }, opts);
+}
diff --git a/services/mcp-server/src/modules/notelett/notelett-tools.ts b/services/mcp-server/src/modules/notelett/notelett-tools.ts
new file mode 100644
index 00000000..8ce9b685
--- /dev/null
+++ b/services/mcp-server/src/modules/notelett/notelett-tools.ts
@@ -0,0 +1,183 @@
+/**
+ * NoteLett MCP tools — notelett.notes.*, notelett.workspaces.*
+ *
+ * Backed by: notelett-backend (port 4016).
+ * All tools require admin role.
+ */
+
+import { z } from 'zod';
+import { registerTool } from '../tools/registry.js';
+import { config } from '../../lib/config.js';
+import {
+  noteLettNotesList,
+  noteLettNoteGet,
+  noteLettNoteCreate,
+  noteLettNoteUpdate,
+  noteLettNoteDelete,
+  noteLettNoteSummarize,
+  noteLettWorkspacesList,
+  noteLettWorkspaceCreate,
+  noteLettNoteTasksList,
+  noteLettNoteArtifactsList,
+} from '../../lib/notelett-client.js';
+import type { McpToolRequest } from '../tools/types.js';
+
+const tokenOf = (req: McpToolRequest) => req.headers.authorization?.slice(7);
+
+// ── notelett.notes.list ─────────────────────────────────────────────────
+
+registerTool({
+  name: 'notelett.notes.list',
+  description:
+    'List notes in a workspace. Supports text search, pagination. Returns id, title, status, createdAt. Requires admin role.',
+  requiredRole: 'admin',
+  inputSchema: z.object({
+    workspaceId: z.string().min(1).describe('Workspace ID'),
+    search: z.string().optional().describe('Full-text search query'),
+    limit: z.coerce.number().min(1).max(config.QUERY_MAX_LIMIT).default(config.QUERY_DEFAULT_LIMIT),
+    offset: z.coerce.number().min(0).default(0),
+  }),
+  async execute(args, req) {
+    return noteLettNotesList(args, { token: tokenOf(req), requestId: req.id });
+  },
+});
+
+// ── notelett.notes.get ──────────────────────────────────────────────────
+
+registerTool({
+  name: 'notelett.notes.get',
+  description:
+    'Get a single note by ID including full content, status, and timestamps. Requires admin role.',
+  requiredRole: 'admin',
+  inputSchema: z.object({
+    noteId: z.string().min(1).describe('Note ID'),
+  }),
+  async execute(args, req) {
+    return noteLettNoteGet(args.noteId, { token: tokenOf(req), requestId: req.id });
+  },
+});
+
+// ── notelett.notes.create ───────────────────────────────────────────────
+
+registerTool({
+  name: 'notelett.notes.create',
+  description:
+    'Create a new note in a workspace. Returns the new note document. Requires admin role.',
+  requiredRole: 'admin',
+  inputSchema: z.object({
+    workspaceId: z.string().min(1).describe('Workspace ID'),
+    title: z.string().min(1).describe('Note title'),
+    content: z.string().optional().describe('Initial note content (plain text or HTML)'),
+  }),
+  async execute(args, req) {
+    return noteLettNoteCreate(args, { token: tokenOf(req), requestId: req.id });
+  },
+});
+
+// ── notelett.notes.update ───────────────────────────────────────────────
+
+registerTool({
+  name: 'notelett.notes.update',
+  description:
+    'Update an existing note (title and/or content). Returns the updated document. Requires admin role.',
+  requiredRole: 'admin',
+  inputSchema: z.object({
+    noteId: z.string().min(1).describe('Note ID'),
+    title: z.string().optional().describe('New title'),
+    content: z.string().optional().describe('New content'),
+  }),
+  async execute(args, req) {
+    const { noteId, ...updates } = args;
+    return noteLettNoteUpdate(noteId, updates, { token: tokenOf(req), requestId: req.id });
+  },
+});
+
+// ── notelett.notes.delete ───────────────────────────────────────────────
+
+registerTool({
+  name: 'notelett.notes.delete',
+  description:
+    'Soft-delete a note (sets status to archived). Requires admin role.',
+  requiredRole: 'admin',
+  inputSchema: z.object({
+    noteId: z.string().min(1).describe('Note ID'),
+  }),
+  async execute(args, req) {
+    await noteLettNoteDelete(args.noteId, { token: tokenOf(req), requestId: req.id });
+    return { success: true };
+  },
+});
+
+// ── notelett.notes.summarize ────────────────────────────────────────────
+
+registerTool({
+  name: 'notelett.notes.summarize',
+  description:
+    'Generate an AI summary of a note using the extraction service. Returns { summary }. Requires admin role.',
+  requiredRole: 'admin',
+  inputSchema: z.object({
+    noteId: z.string().min(1).describe('Note ID'),
+  }),
+  async execute(args, req) {
+    return noteLettNoteSummarize(args.noteId, { token: tokenOf(req), requestId: req.id });
+  },
+});
+
+// ── notelett.workspaces.list ────────────────────────────────────────────
+
+registerTool({
+  name: 'notelett.workspaces.list',
+  description:
+    'List all workspaces accessible to the authenticated user. Returns id, name, description, createdAt. Requires admin role.',
+  requiredRole: 'admin',
+  inputSchema: z.object({}),
+  async execute(_args, req) {
+    return noteLettWorkspacesList({ token: tokenOf(req), requestId: req.id });
+  },
+});
+
+// ── notelett.workspaces.create ──────────────────────────────────────────
+
+registerTool({
+  name: 'notelett.workspaces.create',
+  description:
+    'Create a new workspace. Returns the new workspace document. Requires admin role.',
+  requiredRole: 'admin',
+  inputSchema: z.object({
+    name: z.string().min(1).describe('Workspace name'),
+    description: z.string().optional().describe('Workspace description'),
+  }),
+  async execute(args, req) {
+    return noteLettWorkspaceCreate(args, { token: tokenOf(req), requestId: req.id });
+  },
+});
+
+// ── notelett.notes.tasks ────────────────────────────────────────────────
+
+registerTool({
+  name: 'notelett.notes.tasks',
+  description:
+    'List tasks extracted from a note. Returns id, title, status, createdAt. Requires admin role.',
+  requiredRole: 'admin',
+  inputSchema: z.object({
+    noteId: z.string().min(1).describe('Note ID'),
+  }),
+  async execute(args, req) {
+    return noteLettNoteTasksList(args.noteId, { token: tokenOf(req), requestId: req.id });
+  },
+});
+
+// ── notelett.notes.artifacts ────────────────────────────────────────────
+
+registerTool({
+  name: 'notelett.notes.artifacts',
+  description:
+    'List artifacts associated with a note (file uploads, links, etc). Requires admin role.',
+  requiredRole: 'admin',
+  inputSchema: z.object({
+    noteId: z.string().min(1).describe('Note ID'),
+  }),
+  async execute(args, req) {
+    return noteLettNoteArtifactsList(args.noteId, { token: tokenOf(req), requestId: req.id });
+  },
+});
diff --git a/services/mcp-server/src/server.ts b/services/mcp-server/src/server.ts
index 55b01561..5a3ff9db 100644
--- a/services/mcp-server/src/server.ts
+++ b/services/mcp-server/src/server.ts
@@ -11,6 +11,7 @@
  *   jarvis.*                     — agents, sessions, memory (JarvisJr coaching platform)
  *   chronomind.*                 — timers, routines, syncStatus
  *   nomgap.*                     — fasting sessions, push triggers
+ *   notelett.*                   — notes, workspaces, tasks, artifacts, summarize
  *   peakpulse.*                  — adventure sessions, GPS routes, stats
  *   notes.*                      — notes, search, draft creation
  *   tracker.*                    — items, votes, comments, public roadmap
@@ -67,6 +68,7 @@ import './modules/lysnrai/lysnrai-tools.js';
 import './modules/jarvis/jarvis-tools.js';
 import './modules/chronomind/chronomind-tools.js';
 import './modules/nomgap/nomgap-tools.js';
+import './modules/notelett/notelett-tools.js';
 import './modules/peakpulse/peakpulse-tools.js';
 import './modules/notes/notes-tools.js';
 import './modules/tracker/tracker-tools.js';