diff --git a/src/ucode/smart_routing/routing.py b/src/ucode/smart_routing/routing.py
index 6286c767d..79f48f41b 100644
--- a/src/ucode/smart_routing/routing.py
+++ b/src/ucode/smart_routing/routing.py
@@ -23,11 +23,13 @@
 from pathlib import Path
 from typing import Any
 
+from ucode import config_io
 from ucode.smart_routing.rationale import format_rationale
 
 ROUTER_NAME = "task_v3"
 ROUTER_NAME_ENV_VAR = "SMART_ROUTER_NAME"
 ROUTING_PATH = "/ai-gateway/routing/v1/routes:select"
+ROUTING_REQUEST_LOG_NAME = "routing-requests.jsonl"
 REQUEST_TIMEOUT_S = 30.0
 SUBAGENT_ROUTING_DISCLAIMER = (
     "Spawned subagents are routed independently based on their own complexity."
@@ -234,8 +236,14 @@ def select_route(
         "task": {"prompt": task},
         "route_selector": {"router_name": router_name},
     }
+    url = workspace.rstrip("/") + ROUTING_PATH
+    # Written to a file because stdout belongs to the TUI or the hook protocol.
+    _append_jsonl(
+        config_io.APP_DIR / ROUTING_REQUEST_LOG_NAME,
+        {"at": time.time(), "url": url, "body": body},
+    )
     request = urllib.request.Request(
-        workspace.rstrip("/") + ROUTING_PATH,
+        url,
         data=json.dumps(body).encode("utf-8"),
         headers={
             "Authorization": f"Bearer {token}",
diff --git a/tests/test_claude_routing.py b/tests/test_claude_routing.py
index 5b2b5307d..1bb694124 100644
--- a/tests/test_claude_routing.py
+++ b/tests/test_claude_routing.py
@@ -5,6 +5,7 @@
 import json
 import urllib.error
 
+from ucode import config_io
 from ucode.smart_routing import claude_routing, routing
 
 WS = "https://example.databricks.com"
@@ -79,6 +80,30 @@ def fake_urlopen(request, timeout):
     assert recorded["router_name"] == captured["body"]["route_selector"]["router_name"]
 
 
+def test_routing_request_is_logged(monkeypatch):
+    sent = {}
+
+    def fake_urlopen(request, timeout):
+        sent["url"] = request.full_url
+        sent["body"] = json.loads(request.data)
+        return _Response({"route_selection": []})
+
+    monkeypatch.setattr(claude_routing.urllib.request, "urlopen", fake_urlopen)
+
+    claude_routing.request_routing_decision(
+        WS,
+        "dapi-secret",
+        "Refactor the parser",
+        ["system.ai.claude-opus-4-8", "system.ai.claude-sonnet-5"],
+    )
+
+    log_path = config_io.APP_DIR / routing.ROUTING_REQUEST_LOG_NAME
+    [record] = [json.loads(line) for line in log_path.read_text().splitlines()]
+    assert record["url"] == sent["url"]
+    assert record["body"] == sent["body"]
+    assert "dapi-secret" not in log_path.read_text()
+
+
 def test_missing_arm_short_circuits_without_calling_router(monkeypatch):
     def fail(*args, **kwargs):
         raise AssertionError("router must not be called when an arm is missing")