diff --git a/harness/cd/approval.go b/harness/cd/approval.go
new file mode 100644
index 00000000..775fdb13
--- /dev/null
+++ b/harness/cd/approval.go
@@ -0,0 +1,141 @@
+package cd
+
+import (
+	"fmt"
+
+	"github.com/harness/harness-go-sdk/harness/cd/graphql"
+)
+
+// Helper type for accessing all application related crud methods
+type ApprovalClient struct {
+	ApiClient *ApiClient
+}
+
+// CRUD
+func (ac *ApprovalClient) GetApprovalDetails(applicationId string, executionId string) (*graphql.ApprovalDetailsPayload, error) {
+	query := &GraphQLQuery{
+		Query: fmt.Sprintf(`query($applicationId: String!, $executionId: String!) {
+			approvalDetails(applicationId: $applicationId, executionId: $executionId) {
+				approvalDetails {
+				%s
+				}
+			}
+		}`, approvalDetailsFields),
+		Variables: map[string]interface{}{
+			"applicationId": applicationId,
+			"executionId":   executionId,
+		},
+	}
+
+	res := struct {
+		ApprovalDetails graphql.ApprovalDetailsPayload
+	}{}
+	ac.ApiClient.ExecuteGraphQLQuery(query, &res)
+
+	return &res.ApprovalDetails, nil
+}
+
+func (ac *ApprovalClient) ApproveOrRejectApprovals(input *graphql.ApproveOrRejectApprovalsInput) (*graphql.ApproveOrRejectApprovalsInputPayload, error) {
+
+	query := &GraphQLQuery{
+		Query: `mutation approveOrRejectApprovals ($approvalInput: ApproveOrRejectApprovalsInput!) {
+			approveOrRejectApprovals(input: $approvalInput)
+			 {
+			 success
+			 clientMutationId
+			 }
+		   }`,
+		Variables: map[string]interface{}{
+			"approvalInput": &input,
+		},
+	}
+
+	res := &struct {
+		ApproveOrRejectApprovalsInputPayload *graphql.ApproveOrRejectApprovalsInputPayload
+	}{}
+	err := ac.ApiClient.ExecuteGraphQLQuery(query, &res)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return res.ApproveOrRejectApprovalsInputPayload, nil
+}
+
+var approvalDetailsFields = `
+approvalId
+approvalType
+stepName
+stageName
+startedAt
+triggeredBy {
+	name
+	email
+}
+willExpireAt
+... on UserGroupApprovalDetails {
+	approvers
+	approvalId
+	approvalType
+	stepName
+	stageName
+	startedAt
+	executionId
+	triggeredBy {
+	name
+	email
+	}
+	willExpireAt
+	variables {
+	name
+	value
+	}
+}
+... on ShellScriptDetails {
+	approvalId
+	approvalType
+	retryInterval
+	stageName
+	stepName
+	startedAt
+	triggeredBy {
+	email
+	name
+	}
+	willExpireAt
+}
+... on SNOWApprovalDetails {
+	approvalCondition
+	approvalId
+	approvalType
+	currentStatus
+	rejectionCondition
+	stageName
+	startedAt
+	stepName
+	ticketType
+	ticketUrl
+	triggeredBy {
+	email
+	name
+	}
+	willExpireAt
+}
+... on JiraApprovalDetails {
+	approvalCondition
+	approvalId
+	approvalType
+	currentStatus
+	issueKey
+	issueUrl
+	rejectionCondition
+	stepName
+	stageName
+	startedAt
+	triggeredBy {
+	email
+	name
+	}
+	willExpireAt
+}
+`
diff --git a/harness/cd/approval_test.go b/harness/cd/approval_test.go
new file mode 100644
index 00000000..517bc27e
--- /dev/null
+++ b/harness/cd/approval_test.go
@@ -0,0 +1,14 @@
+package cd
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestApprovalDetails(t *testing.T) {
+	c := getClient()
+	approval, err := c.ApprovalClient.GetApprovalDetails("q_nsFwL5TUq4Jsq00vNGRQ-gf39sw", "ntUxF8b_SRuSWLckvPkODw")
+	require.NoError(t, err)
+	require.NotNil(t, approval)
+}
diff --git a/harness/cd/client.go b/harness/cd/client.go
index 5ee7814e..4a160ca9 100644
--- a/harness/cd/client.go
+++ b/harness/cd/client.go
@@ -46,6 +46,7 @@ type ApiClient struct {
 	UserClient          *UserClient
 	TagClient           *TagClient
 	TriggerClient       *TriggerClient
+	ApprovalClient      *ApprovalClient
 }
 
 func DefaultConfig() *Config {
@@ -101,6 +102,7 @@ func NewClient(cfg *Config) (*ApiClient, error) {
 
 	// API Services
 	c.ApplicationClient = (*ApplicationClient)(&c.common)
+	c.ApprovalClient = (*ApprovalClient)(&c.common)
 	c.CloudProviderClient = (*CloudProviderClient)(&c.common)
 	c.ConfigAsCodeClient = (*ConfigAsCodeClient)(&c.common)
 	c.ConnectorClient = (*ConnectorClient)(&c.common)
diff --git a/harness/cd/graphql/enum_approval_action_types.go b/harness/cd/graphql/enum_approval_action_types.go
new file mode 100644
index 00000000..59dc6112
--- /dev/null
+++ b/harness/cd/graphql/enum_approval_action_types.go
@@ -0,0 +1,20 @@
+package graphql
+
+type ApprovalActionType string
+
+var ApprovalActionTypes = struct {
+	Approve ApprovalActionType
+	Reject  ApprovalActionType
+}{
+	Approve: "APPROVE",
+	Reject:  "REJECT",
+}
+
+var ApprovalActionTypeList = []string{
+	ApprovalActionTypes.Approve.String(),
+	ApprovalActionTypes.Reject.String(),
+}
+
+func (d ApprovalActionType) String() string {
+	return string(d)
+}
diff --git a/harness/cd/graphql/model_approve_or_reject_approvals_input.go b/harness/cd/graphql/model_approve_or_reject_approvals_input.go
new file mode 100644
index 00000000..f2d04164
--- /dev/null
+++ b/harness/cd/graphql/model_approve_or_reject_approvals_input.go
@@ -0,0 +1,11 @@
+package graphql
+
+type ApproveOrRejectApprovalsInput struct {
+	Action           ApprovalActionType  `json:"action,omitempty"`
+	ApplicationId    string              `json:"applicationId,omitempty"`
+	ApprovalId       string              `json:"approvalId,omitempty"`
+	ClientMutationId string              `json:"clientMutationId,omitempty"`
+	Comments         string              `json:"comments,omitempty"`
+	ExecutionId      string              `json:"executionId,omitempty"`
+	VariableInputs   []*ApprovalVariable `json:"variableInputs,omitempty"`
+}
diff --git a/harness/cd/graphql/types.go b/harness/cd/graphql/types.go
index fe367ed2..aad72869 100644
--- a/harness/cd/graphql/types.go
+++ b/harness/cd/graphql/types.go
@@ -847,3 +847,30 @@ type CEClusterHealth struct {
 	LastEventTimestamp float64  `json:"lastEventTimestamp,omitempty"`
 	Messages           []string `json:"messages"`
 }
+
+type ApprovalVariable struct {
+	Name  string `json:"name,omitempty"`
+	Value string `json:"value,omitempty"`
+}
+
+type ApprovalDetailsPayload struct {
+	ApprovalDetails []*Approval `json:"approvalDetails,omitempty"`
+}
+
+type Approval struct {
+	ApprovalId   string              `json:"approvalId,omitempty"`
+	ApprovalType ApprovalStepType    `json:"approvalType,omitempty"`
+	StepName     string              `json:"stepName,omitempty"`
+	StageName    string              `json:"stageName,omitempty"`
+	StartedAt    *time.Time          `json:"startedAt,omitempty"`
+	TriggeredBy  User                `json:"triggeredBy,omitempty"`
+	WillExpireAt *time.Time          `json:"willExpireAt,omitempty"`
+	Approvers    []string            `json:"approvers,omitempty"`
+	ExecutionId  string              `json:"executionId,omitempty"`
+	Variables    []*ApprovalVariable `json:"variables,omitempty"`
+}
+
+type ApproveOrRejectApprovalsInputPayload struct {
+	ClientMutationId string `json:"clientMutationId,omitempty"`
+	Success          bool   `json:"success,omitempty"`
+}