diff --git a/packages/lidarr/src/client.endpoints.test.ts b/packages/lidarr/src/client.endpoints.test.ts
new file mode 100644
index 0000000..6bad813
--- /dev/null
+++ b/packages/lidarr/src/client.endpoints.test.ts
@@ -0,0 +1,95 @@
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { LidarrClient } from './client.js'
+
+afterEach(() => {
+  vi.unstubAllGlobals()
+})
+
+function stubFetch(handler: (url: string, init: RequestInit) => unknown) {
+  const calls: Array<{ url: string; method: string; body: unknown }> = []
+  vi.stubGlobal(
+    'fetch',
+    vi.fn(async (input: string | URL, init: RequestInit = {}) => {
+      const url = String(input)
+      calls.push({ url, method: init.method ?? 'GET', body: init.body ? JSON.parse(String(init.body)) : undefined })
+      return Response.json(handler(url, init) as never)
+    }),
+  )
+  return calls
+}
+
+const client = () => new LidarrClient('http://lidarr.local', 'api-key-value')
+
+describe('LidarrClient endpoints', () => {
+  it('drops root folders without an id or path', async () => {
+    stubFetch(() => [
+      { id: 1, path: '/music', freeSpace: 500 },
+      { id: 2 },
+      { path: '/no-id' },
+    ])
+    await expect(client().rootFolders()).resolves.toEqual([{ id: 1, path: '/music', freeSpaceBytes: 500 }])
+  })
+
+  it('url-encodes the artist lookup term and keeps only usable results', async () => {
+    const calls = stubFetch(() => [
+      { foreignArtistId: 'mb-1', artistName: 'Sigur Rós', disambiguation: 'Icelandic', overview: 'Band' },
+      { artistName: 'No id' },
+    ])
+    const found = await client().lookupArtist('Sigur Rós & Co')
+    expect(calls[0]!.url).toContain('/api/v1/artist/lookup?term=Sigur%20R%C3%B3s%20%26%20Co')
+    expect(found).toHaveLength(1)
+    expect(found[0]).toMatchObject({ foreignArtistId: 'mb-1', artistName: 'Sigur Rós' })
+  })
+
+  it('posts a new artist monitored, without searching for missing albums', async () => {
+    const calls = stubFetch(() => ({ id: 7, foreignArtistId: 'mb-1', artistName: 'Sigur Rós' }))
+    const artist = await client().addArtist({
+      foreignArtistId: 'mb-1',
+      artistName: 'Sigur Rós',
+      qualityProfileId: 1,
+      metadataProfileId: 2,
+      rootFolderPath: '/music',
+    })
+    expect(artist.id).toBe(7)
+    expect(calls[0]).toMatchObject({
+      method: 'POST',
+      body: { monitored: true, addOptions: { monitor: 'all', searchForMissingAlbums: false }, rootFolderPath: '/music' },
+    })
+  })
+
+  it('rejects an add response it cannot read as an artist', async () => {
+    stubFetch(() => ({ unexpected: true }))
+    await expect(
+      client().addArtist({ foreignArtistId: 'x', artistName: 'X', qualityProfileId: 1, metadataProfileId: 1, rootFolderPath: '/m' }),
+    ).rejects.toMatchObject({ code: 'INVALID_RESPONSE' })
+  })
+
+  it('lists an artist\'s albums and falls back to the requested artist id', async () => {
+    const calls = stubFetch(() => [
+      { id: 10, title: 'Ágætis byrjun', monitored: true, foreignAlbumId: 'fa-1' },
+      { id: 11, title: '( )', artistId: 9 },
+      { title: 'no id' },
+    ])
+    const albums = await client().getAlbums(7)
+    expect(calls[0]!.url).toContain('/api/v1/album?artistId=7')
+    expect(albums).toEqual([
+      { id: 10, foreignAlbumId: 'fa-1', title: 'Ágætis byrjun', monitored: true, artistId: 7 },
+      { id: 11, foreignAlbumId: '', title: '( )', monitored: false, artistId: 9 },
+    ])
+  })
+
+  it('makes no request when there are no albums to monitor or search', async () => {
+    const calls = stubFetch(() => ({}))
+    await client().setAlbumsMonitored([], true)
+    await client().searchAlbums([])
+    expect(calls).toHaveLength(0)
+  })
+
+  it('sends monitor and search requests with the album ids', async () => {
+    const calls = stubFetch(() => ({}))
+    await client().setAlbumsMonitored([1, 2], true)
+    await client().searchAlbums([3])
+    expect(calls[0]).toMatchObject({ method: 'PUT', url: expect.stringContaining('/api/v1/album/monitor'), body: { albumIds: [1, 2], monitored: true } })
+    expect(calls[1]).toMatchObject({ method: 'POST', url: expect.stringContaining('/api/v1/command'), body: { name: 'AlbumSearch', albumIds: [3] } })
+  })
+})