diff --git a/gateway/platforms/api_server.py b/gateway/platforms/api_server.py
index d2be9e785..7ced55c1e 100644
--- a/gateway/platforms/api_server.py
+++ b/gateway/platforms/api_server.py
@@ -974,6 +974,18 @@ class APIServerAdapter(BasePlatformAdapter):
             resume_job as _cron_resume,
             trigger_job as _cron_trigger,
         )
+        # Wrap as staticmethod to prevent descriptor binding — these are plain
+        # module functions, not instance methods.  Without this, self._cron_*()
+        # injects ``self`` as the first positional argument and every call
+        # raises TypeError.
+        _cron_list = staticmethod(_cron_list)
+        _cron_get = staticmethod(_cron_get)
+        _cron_create = staticmethod(_cron_create)
+        _cron_update = staticmethod(_cron_update)
+        _cron_remove = staticmethod(_cron_remove)
+        _cron_pause = staticmethod(_cron_pause)
+        _cron_resume = staticmethod(_cron_resume)
+        _cron_trigger = staticmethod(_cron_trigger)
         _CRON_AVAILABLE = True
     except ImportError:
         pass
diff --git a/tests/gateway/test_api_server_jobs.py b/tests/gateway/test_api_server_jobs.py
index 789900a5c..6c17bb120 100644
--- a/tests/gateway/test_api_server_jobs.py
+++ b/tests/gateway/test_api_server_jobs.py
@@ -540,6 +540,72 @@ class TestCronUnavailable:
                 data = await resp.json()
                 assert "not available" in data["error"].lower()
 
+    @pytest.mark.asyncio
+    async def test_pause_handler_no_self_binding(self, adapter):
+        """Pause must not inject ``self`` into the cron helper call."""
+        app = _create_app(adapter)
+        captured = {}
+
+        def _plain_pause(job_id):
+            captured["job_id"] = job_id
+            return SAMPLE_JOB
+
+        async with TestClient(TestServer(app)) as cli:
+            with patch.object(APIServerAdapter, "_CRON_AVAILABLE", True), patch.object(
+                APIServerAdapter, "_cron_pause", staticmethod(_plain_pause)
+            ):
+                resp = await cli.post(f"/api/jobs/{VALID_JOB_ID}/pause")
+                assert resp.status == 200
+                data = await resp.json()
+                assert data["job"] == SAMPLE_JOB
+                assert captured["job_id"] == VALID_JOB_ID
+
+    @pytest.mark.asyncio
+    async def test_list_handler_no_self_binding(self, adapter):
+        """List must preserve keyword arguments without injecting ``self``."""
+        app = _create_app(adapter)
+        captured = {}
+
+        def _plain_list(include_disabled=False):
+            captured["include_disabled"] = include_disabled
+            return [SAMPLE_JOB]
+
+        async with TestClient(TestServer(app)) as cli:
+            with patch.object(APIServerAdapter, "_CRON_AVAILABLE", True), patch.object(
+                APIServerAdapter, "_cron_list", staticmethod(_plain_list)
+            ):
+                resp = await cli.get("/api/jobs?include_disabled=true")
+                assert resp.status == 200
+                data = await resp.json()
+                assert data["jobs"] == [SAMPLE_JOB]
+                assert captured["include_disabled"] is True
+
+    @pytest.mark.asyncio
+    async def test_update_handler_no_self_binding(self, adapter):
+        """Update must pass positional arguments correctly without ``self``."""
+        app = _create_app(adapter)
+        captured = {}
+        updated_job = {**SAMPLE_JOB, "name": "updated-name"}
+
+        def _plain_update(job_id, updates):
+            captured["job_id"] = job_id
+            captured["updates"] = updates
+            return updated_job
+
+        async with TestClient(TestServer(app)) as cli:
+            with patch.object(APIServerAdapter, "_CRON_AVAILABLE", True), patch.object(
+                APIServerAdapter, "_cron_update", staticmethod(_plain_update)
+            ):
+                resp = await cli.patch(
+                    f"/api/jobs/{VALID_JOB_ID}",
+                    json={"name": "updated-name"},
+                )
+                assert resp.status == 200
+                data = await resp.json()
+                assert data["job"] == updated_job
+                assert captured["job_id"] == VALID_JOB_ID
+                assert captured["updates"] == {"name": "updated-name"}
+
     @pytest.mark.asyncio
     async def test_cron_unavailable_create(self, adapter):
         """POST /api/jobs returns 501 when _CRON_AVAILABLE is False."""