diff --git a/harness/nextgen/api_secrets_test.go b/harness/nextgen/api_secrets_test.go
new file mode 100644
index 00000000..b2763413
--- /dev/null
+++ b/harness/nextgen/api_secrets_test.go
@@ -0,0 +1,32 @@
+package nextgen
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/harness/harness-go-sdk/harness/utils"
+	"github.com/stretchr/testify/require"
+)
+
+func TestCreateSecret(t *testing.T) {
+	c, ctx := getClientWithContext()
+
+	id := fmt.Sprintf("%s_%s", t.Name(), utils.RandStringBytes(5))
+
+	secret := &Secret{
+		Type_:      SecretTypes.SecretText,
+		Name:       id,
+		Identifier: id,
+		Text: &SecretTextSpec{
+			Type_:                   SecretSpecTypes.Text,
+			ValueType:               SecretTextValueTypes.Inline,
+			Value:                   "test",
+			SecretManagerIdentifier: "harnessSecretManager",
+		},
+	}
+
+	resp, _, err := c.SecretsApi.PostSecret(ctx, SecretRequestWrapper{Secret: secret}, c.AccountId, &SecretsApiPostSecretOpts{})
+	require.NoError(t, err)
+	require.NotNil(t, resp.Data.Secret)
+	require.Equal(t, secret.Name, resp.Data.Secret.Name)
+}
diff --git a/harness/nextgen/client_test.go b/harness/nextgen/client_test.go
new file mode 100644
index 00000000..acbb4304
--- /dev/null
+++ b/harness/nextgen/client_test.go
@@ -0,0 +1,19 @@
+package nextgen
+
+import (
+	"context"
+	"sync"
+)
+
+var configureClient sync.Once
+var client *APIClient
+
+func getClientWithContext() (*APIClient, context.Context) {
+	configureClient.Do(func() {
+		cfg := NewConfiguration()
+		client = NewAPIClient(cfg)
+	})
+
+	ctx := context.WithValue(context.Background(), ContextAPIKey, APIKey{Key: client.ApiKey})
+	return client, ctx
+}
diff --git a/harness/nextgen/client_utils.go b/harness/nextgen/client_utils.go
new file mode 100644
index 00000000..0b43076c
--- /dev/null
+++ b/harness/nextgen/client_utils.go
@@ -0,0 +1,8 @@
+package nextgen
+
+import "context"
+
+func (c *APIClient) WithAuthContext(ctx context.Context) (*APIClient, context.Context) {
+	authCtx := context.WithValue(ctx, ContextAPIKey, APIKey{Key: c.ApiKey})
+	return c, authCtx
+}
diff --git a/harness/nextgen/configuration.go b/harness/nextgen/configuration.go
index a24241f6..1cee6510 100644
--- a/harness/nextgen/configuration.go
+++ b/harness/nextgen/configuration.go
@@ -77,7 +77,7 @@ func NewConfiguration() *Configuration {
 
 	cfg := &Configuration{
 		AccountId:     helpers.EnvVars.AccountId.Get(),
-		ApiKey:        helpers.EnvVars.ApiKey.Get(),
+		ApiKey:        helpers.EnvVars.PlatformApiKey.Get(),
 		BasePath:      helpers.EnvVars.Endpoint.GetWithDefault(utils.BaseUrl),
 		DefaultHeader: make(map[string]string),
 		HTTPClient:    utils.GetDefaultHttpClient(logger),
diff --git a/harness/nextgen/enum_secret_spec_types.go b/harness/nextgen/enum_secret_spec_types.go
new file mode 100644
index 00000000..29aff987
--- /dev/null
+++ b/harness/nextgen/enum_secret_spec_types.go
@@ -0,0 +1,23 @@
+package nextgen
+
+type SecretSpecType string
+
+var SecretSpecTypes = struct {
+	File   SecretSpecType
+	SSHKey SecretSpecType
+	Text   SecretSpecType
+}{
+	File:   "SecretFileSpe",
+	SSHKey: "SSHKeySpec",
+	Text:   "SecretTextSpec",
+}
+
+var SecretSpecTypeValues = []string{
+	SecretSpecTypes.File.String(),
+	SecretSpecTypes.SSHKey.String(),
+	SecretSpecTypes.Text.String(),
+}
+
+func (e SecretSpecType) String() string {
+	return string(e)
+}
diff --git a/harness/nextgen/enum_secret_text_value_types.go b/harness/nextgen/enum_secret_text_value_types.go
new file mode 100644
index 00000000..c41d6f51
--- /dev/null
+++ b/harness/nextgen/enum_secret_text_value_types.go
@@ -0,0 +1,20 @@
+package nextgen
+
+type SecretTextValueType string
+
+var SecretTextValueTypes = struct {
+	Inline    SecretTextValueType
+	Reference SecretTextValueType
+}{
+	Inline:    "Inline",
+	Reference: "Reference",
+}
+
+var SecretTextValueTypeValues = []string{
+	SecretTextValueTypes.Inline.String(),
+	SecretTextValueTypes.Reference.String(),
+}
+
+func (e SecretTextValueType) String() string {
+	return string(e)
+}
diff --git a/harness/nextgen/enum_secret_types.go b/harness/nextgen/enum_secret_types.go
new file mode 100644
index 00000000..fd64e535
--- /dev/null
+++ b/harness/nextgen/enum_secret_types.go
@@ -0,0 +1,23 @@
+package nextgen
+
+type SecretType string
+
+var SecretTypes = struct {
+	SecretFile SecretType
+	SecretText SecretType
+	SSHKey     SecretType
+}{
+	SecretFile: "SecretFile",
+	SecretText: "SecretText",
+	SSHKey:     "SSHKey",
+}
+
+var SecretTypeValues = []string{
+	SecretTypes.SecretFile.String(),
+	SecretTypes.SecretText.String(),
+	SecretTypes.SSHKey.String(),
+}
+
+func (e SecretType) String() string {
+	return string(e)
+}
diff --git a/harness/nextgen/model_secret.go b/harness/nextgen/model_secret.go
index d0032040..b16bef88 100644
--- a/harness/nextgen/model_secret.go
+++ b/harness/nextgen/model_secret.go
@@ -9,10 +9,12 @@
  */
 package nextgen
 
+import "encoding/json"
+
 // This is details of the secret entity defined in Harness.
 type Secret struct {
 	// This specifies the type of secret
-	Type_ string `json:"type"`
+	Type_ SecretType `json:"type"`
 	// Name of the Secret
 	Name string `json:"name"`
 	// Identifier of the Secret
@@ -24,6 +26,10 @@ type Secret struct {
 	// Tags
 	Tags map[string]string `json:"tags,omitempty"`
 	// Description of the Secret
-	Description string      `json:"description,omitempty"`
-	Spec        *SecretSpec `json:"spec"`
+	Description string          `json:"description,omitempty"`
+	Spec        json.RawMessage `json:"spec"`
+
+	File   *SecretFileSpe  `json:"-"`
+	Text   *SecretTextSpec `json:"-"`
+	SSHKey *SshKeySpec     `json:"-"`
 }
diff --git a/harness/nextgen/model_secret_serializer.go b/harness/nextgen/model_secret_serializer.go
new file mode 100644
index 00000000..ffc35f5a
--- /dev/null
+++ b/harness/nextgen/model_secret_serializer.go
@@ -0,0 +1,62 @@
+package nextgen
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+func (a *Secret) UnmarshalJSON(data []byte) error {
+
+	type Alias Secret
+
+	aux := &struct {
+		*Alias
+	}{
+		Alias: (*Alias)(a),
+	}
+
+	err := json.Unmarshal(data, &aux)
+	if err != nil {
+		return err
+	}
+
+	switch a.Type_ {
+	case SecretTypes.SecretFile:
+		err = json.Unmarshal(aux.Spec, &a.File)
+	case SecretTypes.SSHKey:
+		err = json.Unmarshal(aux.Spec, &a.SSHKey)
+	case SecretTypes.SecretText:
+		err = json.Unmarshal(aux.Spec, &a.Text)
+	default:
+		panic(fmt.Sprintf("unknown secret type %s", a.Type_))
+	}
+
+	return err
+}
+
+func (a *Secret) MarshalJSON() ([]byte, error) {
+	type Alias Secret
+
+	var spec []byte
+	var err error
+
+	switch a.Type_ {
+	case SecretTypes.SecretFile:
+		spec, err = json.Marshal(a.File)
+	case SecretTypes.SSHKey:
+		// spec, err = json.Marshal(a.AssumeIamRole)
+		// noop
+	case SecretTypes.SecretText:
+		spec, err = json.Marshal(a.Text)
+	default:
+		panic(fmt.Sprintf("unknown secret type %s", a.Type_))
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	a.Spec = json.RawMessage(spec)
+
+	return json.Marshal((*Alias)(a))
+}
diff --git a/harness/nextgen/model_secret_text_spec.go b/harness/nextgen/model_secret_text_spec.go
index 504dd71b..9cdb81ef 100644
--- a/harness/nextgen/model_secret_text_spec.go
+++ b/harness/nextgen/model_secret_text_spec.go
@@ -11,12 +11,12 @@ package nextgen
 
 // This has details of encrypted text secret.
 type SecretTextSpec struct {
-	ErrorMessageForInvalidYaml string `json:"errorMessageForInvalidYaml,omitempty"`
-	Type_                      string `json:"type"`
+	ErrorMessageForInvalidYaml string         `json:"errorMessageForInvalidYaml,omitempty"`
+	Type_                      SecretSpecType `json:"type"`
 	// Identifier of the Secret Manager used to manage the secret.
 	SecretManagerIdentifier string `json:"secretManagerIdentifier"`
 	// This has details to specify if the secret value is inline or referenced.
-	ValueType string `json:"valueType"`
+	ValueType SecretTextValueType `json:"valueType"`
 	// Value of the Secret
 	Value string `json:"value,omitempty"`
 }