diff --git a/README.md b/README.md
index 80fa61b..5493d87 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,22 @@ You can build the docker container by running:
 docker build .
 ```
 
+# Usage
+
+## Environment config
+
+* `NSM_LISTEN_ON`                - url to listen on. (default: "unix:///listen.on.socket")
+* `NSM_NAME`                     - Name of Network service manager proxy (default: "nsmgr-proxy")
+* `NSM_MAX_TOKEN_LIFETIME`       - maximum lifetime of tokens (default: "10m")
+* `NSM_REGISTRY_SERVER_POLICIES` - paths to files and directories that contain registry server policies (default: "etc/nsm/opa/common/.*.rego,etc/nsm/opa/registry/.*.rego,etc/nsm/opa/server/.*.rego")
+* `NSM_REGISTRY_CLIENT_POLICIES` - paths to files and directories that contain registry client policies (default: "etc/nsm/opa/common/.*.rego,etc/nsm/opa/registry/.*.rego,etc/nsm/opa/client/.*.rego")
+* `NSM_MAP_IP_FILE_PATH`         - Path to file that contains map of internal to external IPs (default: "map-ip.yaml")
+* `NSM_REGISTRY_PROXY_URL`       - URL to registry proxy. All incoming interdomain registry requests will be proxying by the URL
+* `NSM_REGISTRY_URL`             - URL to registry. All incoming local registry requests will be proxying by the URL
+* `NSM_LOG_LEVEL`                - Log level (default: "INFO")
+* `NSM_OPEN_TELEMETRY_ENDPOINT`  - OpenTelemetry Collector Endpoint (default: "otel-collector.observability.svc.cluster.local:4317")
+* `NSM_METRICS_EXPORT_INTERVAL`  - interval between mertics exports (default: "10s")
+
 # Testing
 
 ## Testing Docker container
@@ -72,4 +88,4 @@ docker run --privileged -e DLV_LISTEN_FORWARDER=:50000 -p 40000:40000 -p 50000:5
 ```
 
 Please note, the tests **start** the cmd, so until you connect to port 40000 with your debugger and walk the tests
-through to the point of running cmd, you will not be able to attach a debugger on port 50000 to the cmd.
\ No newline at end of file
+through to the point of running cmd, you will not be able to attach a debugger on port 50000 to the cmd.
diff --git a/main.go b/main.go
index 64726be..5bd1c62 100644
--- a/main.go
+++ b/main.go
@@ -2,6 +2,8 @@
 //
 // Copyright (c) 2023 Cisco and/or its affiliates.
 //
+// Copyright (c) 2024 OpenInfra Foundation Europe. All rights reserved.
+//
 // SPDX-License-Identifier: Apache-2.0
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
@@ -67,7 +69,7 @@ type Config struct {
 	RegistryProxyURL       *url.URL      `desc:"URL to registry proxy. All incoming interdomain registry requests will be proxying by the URL" split_words:"true"`
 	RegistryURL            *url.URL      `desc:"URL to registry. All incoming local registry requests will be proxying by the URL" split_words:"true"`
 	LogLevel               string        `default:"INFO" desc:"Log level" split_words:"true"`
-	OpenTelemetryEndpoint  string        `default:"otel-collector.observability.svc.cluster.local:4317" desc:"OpenTelemetry Collector Endpoint"`
+	OpenTelemetryEndpoint  string        `default:"otel-collector.observability.svc.cluster.local:4317" desc:"OpenTelemetry Collector Endpoint" split_words:"true"`
 	MetricsExportInterval  time.Duration `default:"10s" desc:"interval between mertics exports" split_words:"true"`
 }