diff --git a/README.md b/README.md
index 51e4920..b15e01e 100644
--- a/README.md
+++ b/README.md
@@ -138,7 +138,7 @@ eigenx auth logout           # Remove key
 ### 2. Environment Variable
 
 ```bash
-export PRIVATE_KEY=0x1234...
+export EIGENX_PRIVATE_KEY=0x1234...
 eigenx app deploy
 ```
 
diff --git a/pkg/commands/auth/keyring.go b/pkg/commands/auth/keyring.go
index f38f0da..6d9a5e7 100644
--- a/pkg/commands/auth/keyring.go
+++ b/pkg/commands/auth/keyring.go
@@ -36,7 +36,7 @@ func GetPrivateKeyWithSource(cCtx *cli.Context) (string, string, error) {
 	}
 
 	// 2. Check environment variable
-	if privateKey := os.Getenv("PRIVATE_KEY"); privateKey != "" {
+	if privateKey := os.Getenv(common.EigenXPrivateKeyEnvVar); privateKey != "" {
 		return privateKey, "environment variable", nil
 	}
 
@@ -54,7 +54,7 @@ func GetPrivateKeyWithSource(cCtx *cli.Context) (string, string, error) {
 	baseMsg := `Private key required. Please provide it via:
   • Keyring: eigenx auth login
   • Flag: --private-key YOUR_KEY
-  • Environment: export PRIVATE_KEY=YOUR_KEY`
+  • Environment: export EIGENX_PRIVATE_KEY=YOUR_KEY`
 
 	if len(keyringErrors) > 0 {
 		return "", "", fmt.Errorf("%s\n\nKeyring issues detected:\n%v", baseMsg, keyringErrors)
diff --git a/pkg/commands/auth/keyring_test.go b/pkg/commands/auth/keyring_test.go
index e6c6977..334cdb6 100644
--- a/pkg/commands/auth/keyring_test.go
+++ b/pkg/commands/auth/keyring_test.go
@@ -43,19 +43,19 @@ func TestListStoredKeys(t *testing.T) {
 }
 
 func TestGetPrivateKeyWithSource(t *testing.T) {
-	originalEnv := os.Getenv("PRIVATE_KEY")
+	originalEnv := os.Getenv(common.EigenXPrivateKeyEnvVar)
 	defer func() {
 		if originalEnv == "" {
-			os.Unsetenv("PRIVATE_KEY")
+			os.Unsetenv(common.EigenXPrivateKeyEnvVar)
 		} else {
-			os.Setenv("PRIVATE_KEY", originalEnv)
+			os.Setenv(common.EigenXPrivateKeyEnvVar, originalEnv)
 		}
 	}()
 
 	mock := testutils.SetupMockKeyring(t)
 
 	t.Run("from command flag", func(t *testing.T) {
-		os.Unsetenv("PRIVATE_KEY")
+		os.Unsetenv(common.EigenXPrivateKeyEnvVar)
 
 		app := &cli.App{
 			Flags: []cli.Flag{common.PrivateKeyFlag},
@@ -79,8 +79,8 @@ func TestGetPrivateKeyWithSource(t *testing.T) {
 
 	t.Run("from environment variable", func(t *testing.T) {
 		testKey := "0xabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcd"
-		os.Setenv("PRIVATE_KEY", testKey)
-		defer os.Unsetenv("PRIVATE_KEY")
+		os.Setenv(common.EigenXPrivateKeyEnvVar, testKey)
+		defer os.Unsetenv(common.EigenXPrivateKeyEnvVar)
 
 		app := &cli.App{}
 		var ctx *cli.Context
@@ -99,7 +99,7 @@ func TestGetPrivateKeyWithSource(t *testing.T) {
 	})
 
 	t.Run("from stored credentials", func(t *testing.T) {
-		os.Unsetenv("PRIVATE_KEY")
+		os.Unsetenv(common.EigenXPrivateKeyEnvVar)
 		mock.Clear()
 		err := mock.StorePrivateKey("sepolia", "0x1111111111111111111111111111111111111111111111111111111111111111")
 		require.NoError(t, err)
@@ -124,8 +124,8 @@ func TestGetPrivateKeyWithSource(t *testing.T) {
 		flagKey := "0x1111111111111111111111111111111111111111111111111111111111111111"
 		envKey := "0x2222222222222222222222222222222222222222222222222222222222222222"
 
-		os.Setenv("PRIVATE_KEY", envKey)
-		defer os.Unsetenv("PRIVATE_KEY")
+		os.Setenv(common.EigenXPrivateKeyEnvVar, envKey)
+		defer os.Unsetenv(common.EigenXPrivateKeyEnvVar)
 
 		app := &cli.App{
 			Flags: []cli.Flag{common.PrivateKeyFlag},
@@ -146,7 +146,7 @@ func TestGetPrivateKeyWithSource(t *testing.T) {
 	})
 
 	t.Run("no key available", func(t *testing.T) {
-		os.Unsetenv("PRIVATE_KEY")
+		os.Unsetenv(common.EigenXPrivateKeyEnvVar)
 		mock.Clear()
 
 		app := &cli.App{}
diff --git a/pkg/commands/auth/whoami.go b/pkg/commands/auth/whoami.go
index 687d224..647d729 100644
--- a/pkg/commands/auth/whoami.go
+++ b/pkg/commands/auth/whoami.go
@@ -25,7 +25,7 @@ func whoamiAction(cCtx *cli.Context) error {
 		fmt.Println("")
 		fmt.Println("To authenticate, use one of:")
 		fmt.Println("  eigenx auth login                    # Store key in keyring")
-		fmt.Println("  export PRIVATE_KEY=0x...             # Use environment variable")
+		fmt.Println("  export EIGENX_PRIVATE_KEY=0x...      # Use environment variable")
 		fmt.Println("  eigenx <command> --private-key 0x... # Use flag")
 		return nil
 	}
diff --git a/pkg/commands/auth/whoami_test.go b/pkg/commands/auth/whoami_test.go
index a8f83e2..7d0c737 100644
--- a/pkg/commands/auth/whoami_test.go
+++ b/pkg/commands/auth/whoami_test.go
@@ -28,12 +28,12 @@ func TestWhoamiCommand(t *testing.T) {
 }
 
 func TestWhoamiAction(t *testing.T) {
-	originalEnv := os.Getenv("PRIVATE_KEY")
+	originalEnv := os.Getenv(common.EigenXPrivateKeyEnvVar)
 	defer func() {
 		if originalEnv == "" {
-			os.Unsetenv("PRIVATE_KEY")
+			os.Unsetenv(common.EigenXPrivateKeyEnvVar)
 		} else {
-			os.Setenv("PRIVATE_KEY", originalEnv)
+			os.Setenv(common.EigenXPrivateKeyEnvVar, originalEnv)
 		}
 	}()
 
@@ -41,8 +41,8 @@ func TestWhoamiAction(t *testing.T) {
 
 	t.Run("with environment variable", func(t *testing.T) {
 		testKey := "0x1234567890123456789012345678901234567890123456789012345678901234"
-		os.Setenv("PRIVATE_KEY", testKey)
-		defer os.Unsetenv("PRIVATE_KEY")
+		os.Setenv(common.EigenXPrivateKeyEnvVar, testKey)
+		defer os.Unsetenv(common.EigenXPrivateKeyEnvVar)
 
 		app, noopLogger := testutils.CreateTestAppWithNoopLoggerAndAccess("test-app", common.GlobalFlags, func(cCtx *cli.Context) error {
 			return whoamiAction(cCtx)
@@ -60,7 +60,7 @@ func TestWhoamiAction(t *testing.T) {
 	})
 
 	t.Run("with stored credentials", func(t *testing.T) {
-		os.Unsetenv("PRIVATE_KEY")
+		os.Unsetenv(common.EigenXPrivateKeyEnvVar)
 		mock.Clear()
 		err := mock.StorePrivateKey("sepolia", "0xabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcd")
 		require.NoError(t, err)
@@ -81,7 +81,7 @@ func TestWhoamiAction(t *testing.T) {
 	})
 
 	t.Run("not authenticated", func(t *testing.T) {
-		os.Unsetenv("PRIVATE_KEY")
+		os.Unsetenv(common.EigenXPrivateKeyEnvVar)
 		mock.Clear()
 
 		app, noopLogger := testutils.CreateTestAppWithNoopLoggerAndAccess("test-app", common.GlobalFlags, func(cCtx *cli.Context) error {
@@ -101,7 +101,7 @@ func TestWhoamiAction(t *testing.T) {
 	})
 
 	t.Run("with environment flag", func(t *testing.T) {
-		os.Unsetenv("PRIVATE_KEY")
+		os.Unsetenv(common.EigenXPrivateKeyEnvVar)
 		mock.Clear()
 		err := mock.StorePrivateKey("sepolia", "0x2222222222222222222222222222222222222222222222222222222222222222")
 		require.NoError(t, err)
diff --git a/pkg/commands/utils/preflight.go b/pkg/commands/utils/preflight.go
index be8c237..1f90fe8 100644
--- a/pkg/commands/utils/preflight.go
+++ b/pkg/commands/utils/preflight.go
@@ -90,10 +90,10 @@ func GetPrivateKeyOrFail(cCtx *cli.Context) (string, error) {
 	}
 
 	// Check environment variable
-	if privateKey := os.Getenv("PRIVATE_KEY"); privateKey != "" {
+	if privateKey := os.Getenv(common.EigenXPrivateKeyEnvVar); privateKey != "" {
 		// Validate the key format
 		if err := common.ValidatePrivateKey(privateKey); err != nil {
-			return "", fmt.Errorf("invalid private key in PRIVATE_KEY environment variable: %w", err)
+			return "", fmt.Errorf("invalid private key in %s environment variable: %w", common.EigenXPrivateKeyEnvVar, err)
 		}
 		return privateKey, nil
 	}
@@ -113,7 +113,7 @@ func GetPrivateKeyOrFail(cCtx *cli.Context) (string, error) {
 	return "", fmt.Errorf(`private key required. Please provide it via:
   • Keyring: eigenx auth login
   • Flag: --private-key YOUR_KEY
-  • Environment: export PRIVATE_KEY=YOUR_KEY`)
+  • Environment: export EIGENX_PRIVATE_KEY=YOUR_KEY`)
 }
 
 // GetDeveloperAddress gets developer address from private key
diff --git a/pkg/common/constants.go b/pkg/common/constants.go
index 46f147c..5948ece 100644
--- a/pkg/common/constants.go
+++ b/pkg/common/constants.go
@@ -31,6 +31,7 @@ const (
 	// Environment variable names
 	MnemonicEnvVar         = "MNEMONIC"                  // Filtered out, overridden by protocol
 	EigenMachineTypeEnvVar = "EIGEN_MACHINE_TYPE_PUBLIC" // Instance type configuration
+	EigenXPrivateKeyEnvVar = "EIGENX_PRIVATE_KEY"        // Private key for authentication
 )
 
 // API permissions constants
diff --git a/pkg/common/flags.go b/pkg/common/flags.go
index b4d083f..6125556 100644
--- a/pkg/common/flags.go
+++ b/pkg/common/flags.go
@@ -13,13 +13,13 @@ var (
 	RpcUrlFlag = &cli.StringFlag{
 		Name:    "rpc-url",
 		Usage:   "RPC URL to connect to blockchain",
-		EnvVars: []string{"RPC_URL"},
+		EnvVars: []string{"EIGENX_RPC_URL"},
 	}
 
 	PrivateKeyFlag = &cli.StringFlag{
 		Name:    "private-key",
 		Usage:   "Private key for signing transactions",
-		EnvVars: []string{"PRIVATE_KEY"},
+		EnvVars: []string{EigenXPrivateKeyEnvVar},
 	}
 
 	ForceFlag = &cli.BoolFlag{