diff --git a/tests/e2e/e2e_config.py b/tests/e2e/e2e_config.py
index 0c7cb39aef1..a4d79b7f139 100644
--- a/tests/e2e/e2e_config.py
+++ b/tests/e2e/e2e_config.py
@@ -28,7 +28,9 @@ MASTER_KEY = os.environ.get("LITELLM_MASTER_KEY", "sk-1234")
 # single path-routing host (stage ALB, compose monolith) works for both planes.
 # Set LITELLM_CONTROL_PLANE_URL only when management is a different base than
 # the LLM host and you are not going through an ingress that path-routes.
-CONTROL_PLANE_BASE_URL = os.environ.get("LITELLM_CONTROL_PLANE_URL", PROXY_BASE_URL).rstrip("/")
+CONTROL_PLANE_BASE_URL = os.environ.get(
+    "LITELLM_CONTROL_PLANE_URL", PROXY_BASE_URL
+).rstrip("/")
 
 
 def parse_replica_urls(raw: str, fallback: str) -> tuple[str, ...]:
@@ -105,13 +107,18 @@ PROPAGATION_TIMEOUT = float(os.environ.get("E2E_PROPAGATION_TIMEOUT", "15"))
 # for empty values) means the harness behaves exactly as before this knob
 # existed.
 FIXTURE_MODE_RAW = os.environ.get("E2E_FIXTURE_MODE", "live")
-FIXTURE_DIR = Path(os.environ.get("E2E_FIXTURE_DIR", "").strip() or str(Path(__file__).resolve().parent / ".fixtures"))
+FIXTURE_DIR = Path(
+    os.environ.get("E2E_FIXTURE_DIR", "").strip()
+    or str(Path(__file__).resolve().parent / ".fixtures")
+)
 
 # Where the provider-edge server binds, and the host name edge api_base URLs
 # advertise to the proxy. They differ when the proxy runs in a container and
 # reaches the pytest host via a gateway name like host.docker.internal.
 PROVIDER_EDGE_BIND_HOST = os.environ.get("E2E_PROVIDER_EDGE_BIND_HOST", "").strip() or "127.0.0.1"
-PROVIDER_EDGE_ADVERTISE_HOST = os.environ.get("E2E_PROVIDER_EDGE_ADVERTISE_HOST", "").strip() or PROVIDER_EDGE_BIND_HOST
+PROVIDER_EDGE_ADVERTISE_HOST = (
+    os.environ.get("E2E_PROVIDER_EDGE_ADVERTISE_HOST", "").strip() or PROVIDER_EDGE_BIND_HOST
+)
 
 # Deliberately modest concurrency. The suite shares its proxy with every other
 # suite in the run, and 750 users at spawn rate 50 saturated the request path hard
@@ -143,10 +150,18 @@ ANOMALY_SESSIONS = int(os.environ.get("E2E_ANOMALY_SESSIONS", "6"))
 ANOMALY_TURNS_PER_SESSION = int(os.environ.get("E2E_ANOMALY_TURNS_PER_SESSION", "6"))
 ANOMALY_TURN_ATTEMPTS = int(os.environ.get("E2E_ANOMALY_TURN_ATTEMPTS", "3"))
 ANOMALY_MAX_ERROR_RATIO = float(os.environ.get("E2E_ANOMALY_MAX_ERROR_RATIO", "0.05"))
-ANOMALY_MIN_WARM_CACHE_READ_SHARE = float(os.environ.get("E2E_ANOMALY_MIN_WARM_CACHE_READ_SHARE", "0.65"))
-ANOMALY_MAX_P95_TURN_SECONDS = float(os.environ.get("E2E_ANOMALY_MAX_P95_TURN_SECONDS", "30"))
-ANOMALY_MAX_KEY_SPEND_USD = float(os.environ.get("E2E_ANOMALY_MAX_KEY_SPEND_USD", "0.60"))
-ANOMALY_SPEND_SETTLE_SECONDS = float(os.environ.get("E2E_ANOMALY_SPEND_SETTLE_SECONDS", "75"))
+ANOMALY_MIN_WARM_CACHE_READ_SHARE = float(
+    os.environ.get("E2E_ANOMALY_MIN_WARM_CACHE_READ_SHARE", "0.65")
+)
+ANOMALY_MAX_P95_TURN_SECONDS = float(
+    os.environ.get("E2E_ANOMALY_MAX_P95_TURN_SECONDS", "30")
+)
+ANOMALY_MAX_KEY_SPEND_USD = float(
+    os.environ.get("E2E_ANOMALY_MAX_KEY_SPEND_USD", "0.60")
+)
+ANOMALY_SPEND_SETTLE_SECONDS = float(
+    os.environ.get("E2E_ANOMALY_SPEND_SETTLE_SECONDS", "75")
+)
 MEMORY_REQUESTS_PER_PHASE = int(os.environ.get("E2E_MEMORY_REQUESTS_PER_PHASE", "300"))
 MEMORY_RETRIES_PER_REQUEST = int(os.environ.get("E2E_MEMORY_RETRIES_PER_REQUEST", "2"))
 MEMORY_TRANSCRIPT_TURNS = int(os.environ.get("E2E_MEMORY_TRANSCRIPT_TURNS", "40"))
@@ -174,12 +189,8 @@ def datadog_mcp_url(*, toolsets: str = "core") -> str:
     belong to a non-US1 org.
     """
     site = (
-        (os.environ.get("DD_SITE", DD_SITE) or "datadoghq.com")
-        .strip()
-        .removeprefix("https://")
-        .removeprefix("http://")
-        .rstrip("/")
-    )
+        os.environ.get("DD_SITE", DD_SITE) or "datadoghq.com"
+    ).strip().removeprefix("https://").removeprefix("http://").rstrip("/")
     site = site.removeprefix("app.")
     host = "mcp.datadoghq.com" if site in ("", "datadoghq.com") else f"mcp.{site}"
     base = f"https://{host}/v1/mcp"