diff --git a/lib/__tests__/oki-api.test.js b/lib/__tests__/oki-api.test.js
new file mode 100644
index 0000000..0fcb3bc
--- /dev/null
+++ b/lib/__tests__/oki-api.test.js
@@ -0,0 +1,37 @@
+import {describe, it, expect, vi, afterEach} from 'vitest'
+import {jwennAnTeks} from '../oki-api'
+
+describe('request (via jwennAnTeks)', () => {
+  const originalFetch = global.fetch
+
+  afterEach(() => {
+    global.fetch = originalFetch
+    vi.restoreAllMocks()
+  })
+
+  it('returns the parsed body on a successful response', async () => {
+    global.fetch = vi.fn().mockResolvedValue({
+      ok: true,
+      json: async () => ({id: 1, titre: 'Test'})
+    })
+
+    const result = await jwennAnTeks(1, 'token')
+    expect(result).toEqual({id: 1, titre: 'Test'})
+  })
+
+  it('throws a clear error when Strapi returns an error response', async () => {
+    global.fetch = vi.fn().mockResolvedValue({
+      ok: false,
+      status: 400,
+      json: async () => ({data: null, error: {status: 400, name: 'ValidationError', message: 'Invalid key'}})
+    })
+
+    await expect(jwennAnTeks(1, 'token')).rejects.toThrow('Eshwe pu jwenn done-a')
+  })
+
+  it('throws when the network request itself fails', async () => {
+    global.fetch = vi.fn().mockRejectedValue(new TypeError('network down'))
+
+    await expect(jwennAnTeks(1, 'token')).rejects.toThrow('Eshwe pu jwenn done-a')
+  })
+})
diff --git a/lib/oki-api.js b/lib/oki-api.js
index af2a6c8..3a5fbbc 100644
--- a/lib/oki-api.js
+++ b/lib/oki-api.js
@@ -14,12 +14,18 @@ const headers = {
 async function request(url, opts = {}) {
   const {...options} = opts
 
+  let res
   try {
-    const res = await fetch(`${OKI_API}${url}`, options)
-    return res.json()
+    res = await fetch(`${OKI_API}${url}`, options)
   } catch {
     throw new Error('Eshwe pu jwenn done-a')
   }
+
+  if (!res.ok) {
+    throw new Error('Eshwe pu jwenn done-a')
+  }
+
+  return res.json()
 }
 
 export async function jwennTeksEpiSlug(slug) {