diff --git a/routes/v1/sessions/create.ts b/routes/v1/sessions/create.ts
index da3c1c4..e9ff6d1 100644
--- a/routes/v1/sessions/create.ts
+++ b/routes/v1/sessions/create.ts
@@ -9,9 +9,13 @@ export default withRouteSpec({
     user_id: z.string(),
     host: z.string(),
   }),
+  jsonBody: z.object({
+    body: z.string().optional(),
+  }),
 })((req, ctx) => {
-  // TODO check the body, this endpoint sends a 502 bad gateway
-  // if you don't provide an empty string in the body
+  if (req.jsonBody.body !== "") {
+    return ctx.json({ id: "", user_id: "", host: "" }, { status: 502 })
+  }
 
   const session = {
     session_id: randomUUID(),
diff --git a/tests/routes/v1/sessions/create.test.ts b/tests/routes/v1/sessions/create.test.ts
index 3786cfd..ae84f8b 100644
--- a/tests/routes/v1/sessions/create.test.ts
+++ b/tests/routes/v1/sessions/create.test.ts
@@ -9,7 +9,9 @@ test("POST /v1/sessions/create", async () => {
     "Freerouting-Environment-Host": "test-host",
   }
 
-  const { data } = await axios.post("/v1/sessions/create", {}, { headers })
+  const { data } = await axios.post("/v1/sessions/create", {
+    body: "",
+  }, { headers })
 
   expect(data).toMatchObject({
     id: expect.any(String),
@@ -17,3 +19,23 @@ test("POST /v1/sessions/create", async () => {
     host: "test-host",
   })
 })
+
+test("POST /v1/sessions/create with non-empty body returns 502", async () => {
+  const { axios } = await getTestServer()
+
+  const headers = {
+    "Freerouting-Profile-ID": "test-user-id",
+    "Freerouting-Environment-Host": "test-host",
+  }
+
+  const response = await axios.post(
+    "/v1/sessions/create",
+    { some: "data" },
+    {
+      headers,
+      validateStatus: () => true,
+    }
+  )
+
+  expect(response.status).toBe(502)
+})