diff --git a/.gitignore b/.gitignore
index f2a23324b..f21c85c41 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
+.direnv/
+
 # backend
 node_modules
 .env
@@ -26,8 +28,6 @@ node_modules
 /.pnp
 .pnp.js
 
-.env
-
 # testing
 coverage
 reports
@@ -63,10 +63,12 @@ yarn-error.log*
 
 # Editor specific
 .vscode/*
-.idea/*
+**/.idea/*
 
 frontend-build
 
+# cli
+.go/
 *.tgz
 cli/infisical-merge
 cli/test/infisical-merge
diff --git a/cli/packages/api/model.go b/cli/packages/api/model.go
index 72dbbc97b..1eb936f24 100644
--- a/cli/packages/api/model.go
+++ b/cli/packages/api/model.go
@@ -2,6 +2,12 @@ package api
 
 import "time"
 
+type Environment struct {
+	Name string `json:"name"`
+	Slug string `json:"slug"`
+	ID   string `json:"id"`
+}
+
 // Stores info for login one
 type LoginOneRequest struct {
 	Email           string `json:"email"`
@@ -14,7 +20,6 @@ type LoginOneResponse struct {
 }
 
 // Stores info for login two
-
 type LoginTwoRequest struct {
 	Email       string `json:"email"`
 	ClientProof string `json:"clientProof"`
@@ -168,9 +173,10 @@ type Secret struct {
 }
 
 type Project struct {
-	ID   string `json:"id"`
-	Name string `json:"name"`
-	Slug string `json:"slug"`
+	ID           string        `json:"id"`
+	Name         string        `json:"name"`
+	Slug         string        `json:"slug"`
+	Environments []Environment `json:"environments"`
 }
 
 type RawSecret struct {
diff --git a/cli/packages/cmd/run.go b/cli/packages/cmd/run.go
index 7f11a3f95..388a4861d 100644
--- a/cli/packages/cmd/run.go
+++ b/cli/packages/cmd/run.go
@@ -15,6 +15,9 @@ import (
 	"syscall"
 	"time"
 
+	"github.com/Infisical/infisical-merge/packages/api"
+	"github.com/go-resty/resty/v2"
+
 	"github.com/Infisical/infisical-merge/packages/models"
 	"github.com/Infisical/infisical-merge/packages/util"
 	"github.com/fatih/color"
@@ -59,11 +62,11 @@ var runCmd = &cobra.Command{
 		return nil
 	},
 	Run: func(cmd *cobra.Command, args []string) {
-		environmentName, _ := cmd.Flags().GetString("env")
+		environmentSlug, _ := cmd.Flags().GetString("env")
 		if !cmd.Flags().Changed("env") {
 			environmentFromWorkspace := util.GetEnvFromWorkspaceFile()
 			if environmentFromWorkspace != "" {
-				environmentName = environmentFromWorkspace
+				environmentSlug = environmentFromWorkspace
 			}
 		}
 
@@ -136,8 +139,20 @@ var runCmd = &cobra.Command{
 			util.HandleError(err, "Unable to parse flag")
 		}
 
+		log.Debug().Msgf("Confirming selected environment is valid: %s", environmentSlug)
+
+		hasEnvironment, err := confirmProjectHasEnvironment(environmentSlug, projectId, token)
+		if err != nil {
+			util.HandleError(err, "Could not confirm project has environment")
+		}
+		if !hasEnvironment {
+			util.HandleError(fmt.Errorf("project does not have environment '%s'", environmentSlug))
+		}
+
+		log.Debug().Msgf("Project '%s' has environment '%s'", projectId, environmentSlug)
+
 		request := models.GetAllSecretsParameters{
-			Environment:            environmentName,
+			Environment:            environmentSlug,
 			WorkspaceId:            projectId,
 			TagSlugs:               tagSlugs,
 			SecretsPath:            secretsPath,
@@ -308,7 +323,6 @@ func waitForExitCommand(cmd *exec.Cmd) (int, error) {
 }
 
 func executeCommandWithWatchMode(commandFlag string, args []string, watchModeInterval int, request models.GetAllSecretsParameters, projectConfigDir string, secretOverriding bool, token *models.TokenDetails) {
-
 	var cmd *exec.Cmd
 	var err error
 	var lastSecretsFetch time.Time
@@ -439,8 +453,53 @@ func executeCommandWithWatchMode(commandFlag string, args []string, watchModeInt
 	}
 }
 
-func fetchAndFormatSecretsForShell(request models.GetAllSecretsParameters, projectConfigDir string, secretOverriding bool, token *models.TokenDetails) (models.InjectableEnvironmentResult, error) {
+func confirmProjectHasEnvironment(environmentSlug, projectId string, token *models.TokenDetails) (bool, error) {
+	var accessToken string
 
+	if token != nil && (token.Type == util.SERVICE_TOKEN_IDENTIFIER || token.Type == util.UNIVERSAL_AUTH_TOKEN_IDENTIFIER) {
+		accessToken = token.Token
+	} else {
+		util.RequireLogin()
+		util.RequireLocalWorkspaceFile()
+
+		loggedInUserDetails, err := util.GetCurrentLoggedInUserDetails(true)
+		if err != nil {
+			util.HandleError(err, "Unable to authenticate")
+		}
+
+		if loggedInUserDetails.LoginExpired {
+			util.PrintErrorMessageAndExit("Your login session has expired, please run [infisical login] and try again")
+		}
+		accessToken = loggedInUserDetails.UserCredentials.JTWToken
+	}
+
+	if projectId == "" {
+		workspaceFile, err := util.GetWorkSpaceFromFile()
+		if err != nil {
+			util.HandleError(err, "Unable to get local project details")
+		}
+
+		projectId = workspaceFile.WorkspaceId
+	}
+
+	httpClient := resty.New()
+	httpClient.SetAuthToken(accessToken).
+		SetHeader("Accept", "application/json")
+
+	project, err := api.CallGetProjectById(httpClient, projectId)
+	if err != nil {
+		return false, err
+	}
+
+	for _, env := range project.Environments {
+		if env.Slug == environmentSlug {
+			return true, nil
+		}
+	}
+	return false, nil
+}
+
+func fetchAndFormatSecretsForShell(request models.GetAllSecretsParameters, projectConfigDir string, secretOverriding bool, token *models.TokenDetails) (models.InjectableEnvironmentResult, error) {
 	if token != nil && token.Type == util.SERVICE_TOKEN_IDENTIFIER {
 		request.InfisicalToken = token.Token
 	} else if token != nil && token.Type == util.UNIVERSAL_AUTH_TOKEN_IDENTIFIER {
diff --git a/cli/packages/util/secrets.go b/cli/packages/util/secrets.go
index 5a2a0ec24..0e26e03b0 100644
--- a/cli/packages/util/secrets.go
+++ b/cli/packages/util/secrets.go
@@ -232,7 +232,6 @@ func FilterSecretsByTag(plainTextSecrets []models.SingleEnvironmentVariable, tag
 
 func GetAllEnvironmentVariables(params models.GetAllSecretsParameters, projectConfigFilePath string) ([]models.SingleEnvironmentVariable, error) {
 	var secretsToReturn []models.SingleEnvironmentVariable
-	// var serviceTokenDetails api.GetServiceTokenDetailsResponse
 	var errorToReturn error
 
 	if params.InfisicalToken == "" && params.UniversalAuthAccessToken == "" {
diff --git a/cli/test/secrets_test.go b/cli/test/secrets_test.go
index f7f0f13ff..642d33277 100644
--- a/cli/test/secrets_test.go
+++ b/cli/test/secrets_test.go
@@ -76,7 +76,6 @@ func TestUniversalAuth_SecretsGetWrongEnvironment(t *testing.T) {
 	if err != nil {
 		t.Fatalf("snapshot failed: %v", err)
 	}
-
 }
 
 func TestUserAuth_SecretsGetAll(t *testing.T) {
diff --git a/flake.nix b/flake.nix
index 094cfedc6..cc4cf8d65 100644
--- a/flake.nix
+++ b/flake.nix
@@ -14,11 +14,21 @@
           git
           lazygit
 
+          go
           python312Full
           nodejs_20
           nodePackages.prettier
           infisical
         ];
+
+        env = {
+          GOROOT = "${pkgs.go}/share/go";
+        };
+
+        shellHook = ''
+          export GOPATH="$(pwd)/.go"
+          mkdir -p "$GOPATH"
+        '';
       };
   };
 }