diff --git a/.agents/evidence/pr/issue-415-codexapp-standard-responses/dashboard-standard-responses-capture.png b/.agents/evidence/pr/issue-415-codexapp-standard-responses/dashboard-standard-responses-capture.png
new file mode 100644
index 00000000..8800d332
Binary files /dev/null and b/.agents/evidence/pr/issue-415-codexapp-standard-responses/dashboard-standard-responses-capture.png differ
diff --git a/claude_tap/cli_clients.py b/claude_tap/cli_clients.py
index 0ec3c352..4271231d 100644
--- a/claude_tap/cli_clients.py
+++ b/claude_tap/cli_clients.py
@@ -441,7 +441,10 @@ def reverse_strip_path_prefix(self, target: str) -> str:
         default_proxy_mode="forward",
         auto_trust_ca_macos=True,
         forward_trace_methods=("POST", "WEBSOCKET"),
-        forward_trace_path_prefixes=("/backend-api/codex/responses",),
+        forward_trace_path_prefixes=(
+            "/backend-api/codex/responses",
+            "/v1/responses",
+        ),
     ),
     "kimi": ClientConfig(
         cmd="kimi",
diff --git a/tests/test_client_config_framework.py b/tests/test_client_config_framework.py
index 74b26234..7dd203c7 100644
--- a/tests/test_client_config_framework.py
+++ b/tests/test_client_config_framework.py
@@ -134,7 +134,10 @@ def test_codexapp_declares_raw_backend_capture_mode() -> None:
     assert cfg.default_target == "https://chatgpt.com/backend-api/codex"
     assert cfg.default_proxy_mode == "forward"
     assert cfg.forward_trace_methods == ("POST", "WEBSOCKET")
-    assert cfg.forward_trace_path_prefixes == ("/backend-api/codex/responses",)
+    assert cfg.forward_trace_path_prefixes == (
+        "/backend-api/codex/responses",
+        "/v1/responses",
+    )
     assert cfg.transcript_only is False
 
 
diff --git a/tests/test_forward_proxy.py b/tests/test_forward_proxy.py
index 37d86fe5..1298acb6 100644
--- a/tests/test_forward_proxy.py
+++ b/tests/test_forward_proxy.py
@@ -10,6 +10,7 @@
 
 import pytest
 
+from claude_tap.cli_clients import CLIENT_CONFIGS
 from claude_tap.forward_proxy import ForwardProxyServer, _decode_request_body_for_trace
 from claude_tap.trace import TraceWriter
 from claude_tap.trace_store import get_trace_store, reset_trace_store
@@ -36,6 +37,80 @@ async def drain(self) -> None:
         return None
 
 
+@pytest.mark.parametrize(
+    ("method", "path", "expected"),
+    [
+        ("POST", "/backend-api/codex/responses", True),
+        ("POST", "/v1/responses", True),
+        ("WEBSOCKET", "/v1/responses", True),
+        ("GET", "/v1/responses", False),
+        ("POST", "/v1/chat/completions", False),
+        ("POST", "/v1/responses-other", False),
+    ],
+)
+def test_codexapp_capture_filter(method: str, path: str, expected: bool) -> None:
+    cfg = CLIENT_CONFIGS["codexapp"]
+    server = ForwardProxyServer(
+        host="127.0.0.1",
+        port=0,
+        ca=object(),
+        writer=object(),
+        session=object(),
+        trace_methods=cfg.forward_trace_methods,
+        trace_path_prefixes=cfg.forward_trace_path_prefixes,
+    )
+
+    assert server._should_trace_request(method, path) is expected
+
+
+@pytest.mark.asyncio
+async def test_forward_proxy_captures_codexapp_custom_responses_request(
+    tmp_path: Path,
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    monkeypatch.setenv("CLOUDTAP_DB", str(tmp_path / "traces.sqlite3"))
+    reset_trace_store()
+    store = get_trace_store()
+    session_id = store.create_session(client="codexapp", proxy_mode="forward")
+    trace_writer = TraceWriter(session_id, store=store)
+    client_writer = _MemoryWriter()
+    cfg = CLIENT_CONFIGS["codexapp"]
+    server = ForwardProxyServer(
+        host="127.0.0.1",
+        port=0,
+        ca=object(),
+        writer=trace_writer,
+        session=_UnexpectedSession(),
+        trace_methods=cfg.forward_trace_methods,
+        trace_path_prefixes=cfg.forward_trace_path_prefixes,
+        capture_only=True,
+    )
+    request_body = {
+        "model": "MiniMax-M3",
+        "input": [{"role": "user", "content": [{"type": "input_text", "text": "hello"}]}],
+        "stream": False,
+    }
+
+    try:
+        await server._forward_and_record(
+            "POST",
+            "/v1/responses",
+            {"Content-Type": "application/json"},
+            json.dumps(request_body).encode(),
+            "https://api.minimaxi.com/v1/responses",
+            client_writer,
+        )
+        trace_writer.close()
+
+        records = store.load_records(session_id)
+        assert len(records) == 1
+        assert records[0]["request"]["path"] == "/v1/responses"
+        assert records[0]["request"]["body"] == request_body
+        assert records[0]["response"]["status"] == 200
+    finally:
+        reset_trace_store()
+
+
 @pytest.mark.parametrize(
     ("encoding", "compress"),
     [