diff --git a/test/integration/proxy.test.ts b/test/integration/proxy.test.ts
index 4638b9e..bec8235 100644
--- a/test/integration/proxy.test.ts
+++ b/test/integration/proxy.test.ts
@@ -13,7 +13,7 @@ vi.hoisted(() => {
 });
 
 let downstream: ReturnType<typeof serve>;
-let captured: { auth?: string; fake?: string; path?: string } = {};
+let captured: { auth?: string; fake?: string; path?: string; method?: string; body?: string } = {};
 
 describe('gateway proxy', () => {
   let token = '';
@@ -32,11 +32,13 @@ describe('gateway proxy', () => {
         },
       });
     });
-    echo.all('*', (c) => {
+    echo.all('*', async (c) => {
       captured = {
         auth: c.req.header('authorization') ?? '',
         fake: c.req.header('x-user-id') ?? '',
         path: c.req.path,
+        method: c.req.method,
+        body: await c.req.text(),
       };
       return c.json({ from: 'downstream' });
     });
@@ -66,6 +68,19 @@ describe('gateway proxy', () => {
     expect(captured.fake).toBe('');
   });
 
+  it('POST 转发：方法与请求体原样到下游（F1）', async () => {
+    const res = await buildApp().request('/api/task/task/t-1/claim', {
+      method: 'POST',
+      headers: { authorization: `Bearer ${token}`, 'content-type': 'application/json' },
+      body: JSON.stringify({ note: 'hello' }),
+    });
+    expect(res.status).toBe(200);
+    expect(captured.method).toBe('POST');
+    expect(captured.path).toBe('/task/t-1/claim');
+    expect(JSON.parse(captured.body ?? '')).toEqual({ note: 'hello' });
+    expect(await res.json()).toEqual({ from: 'downstream' });
+  });
+
   it('下游不可达 → 502 统一错误形状，点名是哪个下游（C3）', async () => {
     const res = await buildApp().request('/api/data/ledger/domains', {
       headers: { authorization: `Bearer ${token}` },