diff --git a/ddtrace/contrib/internal/mcp/patch.py b/ddtrace/contrib/internal/mcp/patch.py
index c649b4bd4b5..e2e2e48cbb3 100644
--- a/ddtrace/contrib/internal/mcp/patch.py
+++ b/ddtrace/contrib/internal/mcp/patch.py
@@ -1,4 +1,3 @@
-import os
 import sys
 from typing import TYPE_CHECKING
 from typing import Optional
@@ -17,6 +16,7 @@
 from ddtrace.contrib.trace_utils import unwrap
 from ddtrace.contrib.trace_utils import wrap
 from ddtrace.internal.logger import get_logger
+from ddtrace.internal.settings import env
 from ddtrace.internal.utils.formats import asbool
 from ddtrace.llmobs._integrations.mcp import CLIENT_TOOL_CALL_OPERATION_NAME
 from ddtrace.llmobs._integrations.mcp import SERVER_REQUEST_OPERATION_NAME
@@ -32,8 +32,8 @@
 config._add(
     "mcp",
     {
-        "distributed_tracing": asbool(os.getenv("DD_MCP_DISTRIBUTED_TRACING", default=True)),
-        "capture_intent": asbool(os.getenv("DD_MCP_CAPTURE_INTENT", default=False)),
+        "distributed_tracing": asbool(env.get("DD_MCP_DISTRIBUTED_TRACING", default=True)),
+        "capture_intent": asbool(env.get("DD_MCP_CAPTURE_INTENT", default=False)),
     },
 )
 
diff --git a/ddtrace/contrib/internal/ray/patch.py b/ddtrace/contrib/internal/ray/patch.py
index 84d50acad61..745dedcb854 100644
--- a/ddtrace/contrib/internal/ray/patch.py
+++ b/ddtrace/contrib/internal/ray/patch.py
@@ -18,6 +18,7 @@
 from ddtrace.internal.logger import get_logger
 from ddtrace.internal.module import ModuleWatchdog
 from ddtrace.internal.schema import schematize_service_name
+from ddtrace.internal.settings import env
 from ddtrace.internal.telemetry import get_config as _get_config
 from ddtrace.internal.utils import get_argument_value
 from ddtrace.internal.utils.formats import asbool
@@ -64,7 +65,7 @@
 
 log = get_logger(__name__)
 
-RAY_SERVICE_NAME = os.environ.get(RAY_JOB_NAME)
+RAY_SERVICE_NAME = env.get(RAY_JOB_NAME)
 
 # Ray modules that should be excluded from tracing
 RAY_COMMON_MODULE_DENYLIST = {
@@ -84,8 +85,8 @@
     "ray",
     dict(
         _default_service=schematize_service_name("ray"),
-        use_entrypoint_as_service_name=asbool(os.getenv("DD_TRACE_RAY_USE_ENTRYPOINT_AS_SERVICE_NAME", default=False)),
-        redact_entrypoint_paths=asbool(os.getenv("DD_TRACE_RAY_REDACT_ENTRYPOINT_PATHS", default=True)),
+        use_entrypoint_as_service_name=asbool(env.get("DD_TRACE_RAY_USE_ENTRYPOINT_AS_SERVICE_NAME", default=False)),
+        redact_entrypoint_paths=asbool(env.get("DD_TRACE_RAY_REDACT_ENTRYPOINT_PATHS", default=True)),
         trace_core_api=_get_config("DD_TRACE_RAY_CORE_API", default=False, modifier=asbool),
         trace_args_kwargs=_get_config("DD_TRACE_RAY_ARGS_KWARGS", default=False, modifier=asbool),
     ),
@@ -397,12 +398,12 @@ async def _traced_run_method(self: Any, *args: Any, _dd_ray_trace_ctx=None, **kw
         from ddtrace.ext import SpanTypes
 
         context = _TraceContext._extract(_dd_ray_trace_ctx) if _dd_ray_trace_ctx else None
-        submission_id = os.environ.get(RAY_SUBMISSION_ID)
+        submission_id = env.get(RAY_SUBMISSION_ID)
 
         with long_running_ray_span(
             "actor_method.execute",
             resource=f"{self.__class__.__name__}.{method.__name__}",
-            service=os.environ.get(RAY_JOB_NAME, DEFAULT_JOB_NAME),
+            service=env.get(RAY_JOB_NAME, DEFAULT_JOB_NAME),
             span_type=SpanTypes.RAY,
             child_of=context,
             activate=True,
@@ -440,7 +441,7 @@ def _traced_exec_entrypoint_method(self: Any, *args: Any, _dd_ray_trace_ctx=None
         with tracer.trace(
             "exec entrypoint",
             resource=f"exec {entrypoint_name}",
-            service=os.environ.get(RAY_JOB_NAME, DEFAULT_JOB_NAME),
+            service=env.get(RAY_JOB_NAME, DEFAULT_JOB_NAME),
             span_type=SpanTypes.RAY,
         ) as span:
             span._set_attribute(SPAN_KIND, SpanKind.CONSUMER)
diff --git a/ddtrace/contrib/internal/ray/utils.py b/ddtrace/contrib/internal/ray/utils.py
index e8da3d9db79..51ec1e04c73 100644
--- a/ddtrace/contrib/internal/ray/utils.py
+++ b/ddtrace/contrib/internal/ray/utils.py
@@ -21,6 +21,7 @@
 from ddtrace.constants import _FILTER_KEPT_KEY
 from ddtrace.constants import _SAMPLING_PRIORITY_KEY
 from ddtrace.constants import _SPAN_MEASURED_KEY
+from ddtrace.internal.settings import env
 from ddtrace.propagation.http import _TraceContext
 
 from .constants import DD_RAY_TRACE_CTX
@@ -69,16 +70,16 @@ def _inject_context_in_kwargs(context: Context, kwargs: dict[str, Any]) -> None:
 def _inject_context_in_env(context: Context) -> None:
     headers = {}
     _TraceContext._inject(context, headers)
-    os.environ["traceparent"] = headers.get("traceparent", "")
-    os.environ["tracestate"] = headers.get("tracestate", "")
+    env["traceparent"] = headers.get("traceparent", "")
+    env["tracestate"] = headers.get("tracestate", "")
 
 
 def _extract_tracing_context_from_env() -> Optional[Context]:
-    if os.environ.get("traceparent") is not None and os.environ.get("tracestate") is not None:
+    if env.get("traceparent") is not None and env.get("tracestate") is not None:
         return _TraceContext._extract(
             {
-                "traceparent": os.environ.get("traceparent"),
-                "tracestate": os.environ.get("tracestate"),
+                "traceparent": env.get("traceparent"),
+                "tracestate": env.get("tracestate"),
             }
         )
     return None
@@ -93,7 +94,7 @@ def _inject_ray_span_tags_and_metrics(span: Span) -> None:
     span._set_attribute(_SPAN_MEASURED_KEY, 1)
     span._set_attribute(_SAMPLING_PRIORITY_KEY, 2)
 
-    submission_id = os.environ.get(RAY_SUBMISSION_ID)
+    submission_id = env.get(RAY_SUBMISSION_ID)
     if submission_id is not None:
         span._set_attribute(RAY_SUBMISSION_ID_TAG, submission_id)