diff --git a/lib/api/cap.js b/lib/api/cap.js
index fd33c81..7e6a662 100644
--- a/lib/api/cap.js
+++ b/lib/api/cap.js
@@ -1,6 +1,6 @@
 import { canAct } from '../auth/capability.js';
 import * as pendingChanges from '../db/repos/pending_changes.js';
-import { ForbiddenError } from './errors.js';
+import { ForbiddenError, UnauthorizedError } from './errors.js';
 
 const METHOD_TO_ACTION = { POST: 'create', PATCH: 'update', PUT: 'update', DELETE: 'delete' };
 
@@ -15,9 +15,8 @@ export function requireWrite(entity_type) {
 }
 
 export function requireOwner(req, _res, next) {
-  if (req.actor?.kind !== 'user') {
-    return next(new ForbiddenError('owner-only endpoint'));
-  }
+  if (!req.actor) return next(new UnauthorizedError('owner-only endpoint'));
+  if (req.actor.kind !== 'user') return next(new ForbiddenError('owner-only endpoint'));
   next();
 }
 
diff --git a/lib/api/errors.js b/lib/api/errors.js
index a6bb297..5705934 100644
--- a/lib/api/errors.js
+++ b/lib/api/errors.js
@@ -33,6 +33,12 @@ export class ForbiddenError extends ApiError {
   }
 }
 
+export class UnauthorizedError extends ApiError {
+  constructor(message = 'unauthorized', details) {
+    super('unauthorized', message, 401, details);
+  }
+}
+
 export function asyncWrap(fn) {
   return (req, res, next) => Promise.resolve(fn(req, res, next)).catch(next);
 }
diff --git a/lib/api/routes/devices.js b/lib/api/routes/devices.js
new file mode 100644
index 0000000..beee87a
--- /dev/null
+++ b/lib/api/routes/devices.js
@@ -0,0 +1,82 @@
+import { Router } from 'express';
+import { z } from 'zod';
+import { asyncWrap, errorMiddleware } from '../errors.js';
+import { requireOwner } from '../cap.js';
+import { validate } from '../validate.js';
+import * as devices from '../../db/repos/lan_devices.js';
+import * as agents from '../../db/repos/agents.js';
+import { timingSafeStrEqual } from '../../auth/safe_compare.js';
+import { accessOwnerEmail } from '../../auth/cf_access.js';
+
+export const router = Router();
+
+// Soft auth: identifies the actor if auth is present but never blocks the request.
+// Owner-only sub-routes enforce 401/403 via requireOwner.
+async function softAuth(req, _res, next) {
+  try {
+    const cfEmail = await accessOwnerEmail(req);
+    if (cfEmail) { req.actor = { kind: 'user', id: null }; return next(); }
+    const auth = req.headers.authorization || '';
+    const [scheme, token] = auth.split(' ');
+    if (scheme === 'Bearer' && token) {
+      if (process.env.OWNER_TOKEN && timingSafeStrEqual(token, process.env.OWNER_TOKEN)) {
+        req.actor = { kind: 'user', id: null }; return next();
+      }
+      try {
+        const agent = await agents.verifyToken(token);
+        if (agent) req.actor = { kind: 'agent', id: agent.id, capabilities: agent.capabilities || {}, scopes: agent.scopes || {} };
+      } catch { /* ignore */ }
+    }
+  } catch { /* ignore */ }
+  next();
+}
+const GROUP_ORDER = ['Smart Home', 'Entertainment', 'Personal', 'Network', 'Flagged'];
+
+router.use(softAuth);
+
+// GET /devices — known devices grouped for the band (open within the app, like /services).
+router.get('/', asyncWrap(async (_req, res) => {
+  const byGrp = new Map();
+  for (const d of await devices.listKnown()) {
+    const g = d.grp || 'Flagged';
+    if (!byGrp.has(g)) byGrp.set(g, []);
+    byGrp.get(g).push(d);
+  }
+  const order = [...GROUP_ORDER, ...[...byGrp.keys()].filter(g => !GROUP_ORDER.includes(g))];
+  res.json({ groups: order.filter(g => byGrp.has(g)).map(name => ({ name, devices: byGrp.get(name) })) });
+}));
+
+// GET /devices/discovered — review queue (owner).
+router.get('/discovered', requireOwner, asyncWrap(async (_req, res) => {
+  res.json(await devices.listDiscovered());
+}));
+
+const macParam = z.object({ mac: z.string().regex(/^[0-9a-f]{2}(:[0-9a-f]{2}){5}$/i) });
+const patchBody = z.object({
+  name: z.string().max(120).optional(),
+  grp: z.enum(['Smart Home', 'Entertainment', 'Personal', 'Network', 'Flagged']).optional(),
+  status: z.enum(['new', 'known', 'ignored']).optional(),
+  note: z.string().max(500).optional(),
+  flagged: z.boolean().optional()
+});
+
+// PATCH /devices/:mac — name / edit / promote (owner). This is "add from discovered".
+router.patch('/:mac', requireOwner, validate({ params: macParam, body: patchBody }), asyncWrap(async (req, res) => {
+  const updated = await devices.update(req.params.mac.toLowerCase(), req.body);
+  if (!updated) return res.status(404).json({ error: { code: 'not_found' } });
+  res.json(updated);
+}));
+
+// DELETE /devices/:mac (owner).
+router.delete('/:mac', requireOwner, validate({ params: macParam }), asyncWrap(async (req, res) => {
+  if (!(await devices.remove(req.params.mac.toLowerCase()))) return res.status(404).json({ error: { code: 'not_found' } });
+  res.status(204).end();
+}));
+
+// POST /devices/scan — run a scan now (owner).
+router.post('/scan', requireOwner, asyncWrap(async (_req, res) => {
+  const { runDeviceScanCycle } = await import('../../infra/scan_cycle.js');
+  res.json(await runDeviceScanCycle());
+}));
+
+router.use(errorMiddleware);
diff --git a/server.js b/server.js
index 7e5ff7a..a8dc74f 100644
--- a/server.js
+++ b/server.js
@@ -7,6 +7,7 @@ import * as queue from './lib/jobs/queue.js';
 import { registerWorkers } from './lib/jobs/index.js';
 import { router as ingestRouter } from './lib/api/routes/ingest.js';
 import { router as iconsRouter } from './lib/api/routes/icons.js';
+import { router as devicesRouter } from './lib/api/routes/devices.js';
 import { startCron } from './lib/cron/index.js';
 import { seedFromConfig } from './lib/health/registry.js';
 import { mcpAuth } from './lib/api/middleware/mcp_auth.js';
@@ -52,6 +53,10 @@ export function createApp() {
   // slugs are sanitized to [a-z0-9-] to prevent path traversal.
   app.use('/api/icons', iconsRouter);
 
+  // /api/devices — band data is public (like the static devices.json it replaces);
+  // discovered/edit/scan sub-routes use requireOwner (401/403) internally.
+  app.use('/api/devices', devicesRouter);
+
   app.get('/health', async (_req, res) => {
     let db_ok = false;
     try {
diff --git a/tests/api/devices.test.js b/tests/api/devices.test.js
new file mode 100644
index 0000000..0010826
--- /dev/null
+++ b/tests/api/devices.test.js
@@ -0,0 +1,41 @@
+// tests/api/devices.test.js
+import { describe, it, expect, beforeAll, beforeEach } from 'vitest';
+import request from 'supertest';
+import { createApp } from '../../server.js';
+import { resetDb } from '../helpers/db.js';
+import { migrateUp } from '../../lib/db/migrate.js';
+
+let app;
+const owner = r => r.set('Authorization', 'Bearer test-token');
+beforeAll(async () => { process.env.OWNER_TOKEN = 'test-token'; app = createApp(); });
+beforeEach(async () => { await resetDb(); await migrateUp(); });
+
+describe('/api/devices', () => {
+  it('GET / returns known devices grouped', async () => {
+    const res = await request(app).get('/api/devices');
+    expect(res.status).toBe(200);
+    const names = res.body.groups.map(g => g.name);
+    expect(names).toContain('Network');
+    const net = res.body.groups.find(g => g.name === 'Network');
+    expect(net.devices.some(d => d.name === 'Orbi Satellite')).toBe(true);
+  });
+
+  it('GET /discovered requires owner and lists new devices', async () => {
+    expect((await request(app).get('/api/devices/discovered')).status).toBe(401);
+    const res = await owner(request(app).get('/api/devices/discovered'));
+    expect(res.status).toBe(200);
+    expect(res.body.some(d => d.mac === '24:4b:fe:8e:09:a4')).toBe(true);
+  });
+
+  it('PATCH /:mac promotes + names (owner)', async () => {
+    const res = await owner(request(app).patch('/api/devices/24:4b:fe:8e:09:a4'))
+      .send({ name: 'ASUS Router', grp: 'Network', status: 'known' });
+    expect(res.status).toBe(200);
+    expect(res.body.name).toBe('ASUS Router');
+    expect((await owner(request(app).get('/api/devices/discovered'))).body).toHaveLength(0);
+  });
+
+  it('PATCH rejects a bad MAC', async () => {
+    expect((await owner(request(app).patch('/api/devices/not-a-mac')).send({ name: 'x' })).status).toBe(400);
+  });
+});