diff --git a/lib/karakeep/client.js b/lib/karakeep/client.js
new file mode 100644
index 0000000..f92f826
--- /dev/null
+++ b/lib/karakeep/client.js
@@ -0,0 +1,11 @@
+export async function getBookmark(id) {
+  const base = process.env.KARAKEEP_API_URL || 'https://karakeep.hynesy.com';
+  const tok = process.env.KARAKEEP_API_TOKEN || '';
+  const res = await fetch(`${base}/api/v1/bookmarks/${encodeURIComponent(id)}`, {
+    headers: { Authorization: 'Bearer ' + tok },
+    signal: AbortSignal.timeout(10_000)
+  });
+  if (res.status === 404) return null;
+  if (!res.ok) throw new Error(`karakeep ${res.status}`);
+  return res.json();
+}
diff --git a/tests/karakeep/client.test.js b/tests/karakeep/client.test.js
new file mode 100644
index 0000000..a9216ae
--- /dev/null
+++ b/tests/karakeep/client.test.js
@@ -0,0 +1,35 @@
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
+import { getBookmark } from '../../lib/karakeep/client.js';
+
+let lastInit;
+beforeEach(() => {
+  lastInit = null;
+  global.fetch = vi.fn(async (url, init) => {
+    lastInit = init;
+    return new Response(
+      JSON.stringify({ id: 'b-1', url: 'https://example.com', title: 'X', tags: [{ name: 'archive' }] }),
+      { status: 200, headers: { 'content-type': 'application/json' }}
+    );
+  });
+});
+afterEach(() => { vi.restoreAllMocks(); });
+
+describe('karakeep client', () => {
+  it('fetches a bookmark with bearer token', async () => {
+    process.env.KARAKEEP_API_URL = 'https://karakeep.test';
+    process.env.KARAKEEP_API_TOKEN = 'tok-123';
+    const bm = await getBookmark('b-1');
+    expect(bm.url).toBe('https://example.com');
+    expect(lastInit.headers.Authorization).toBe('Bearer tok-123');
+  });
+
+  it('returns null on 404', async () => {
+    global.fetch = vi.fn(async () => new Response('', { status: 404 }));
+    expect(await getBookmark('nope')).toBeNull();
+  });
+
+  it('throws on other non-2xx', async () => {
+    global.fetch = vi.fn(async () => new Response('boom', { status: 503 }));
+    await expect(getBookmark('x')).rejects.toThrow();
+  });
+});