diff --git a/odpf/siren/v1beta1/siren.proto b/odpf/siren/v1beta1/siren.proto
new file mode 100644
index 00000000..d1e37b8e
--- /dev/null
+++ b/odpf/siren/v1beta1/siren.proto
@@ -0,0 +1,634 @@
+syntax = "proto3";
+package odpf.siren.v1beta1;
+
+import "google/api/annotations.proto";
+import "google/api/field_behavior.proto";
+import "google/protobuf/descriptor.proto";
+import "google/protobuf/struct.proto";
+import "google/protobuf/timestamp.proto";
+import "google/protobuf/empty.proto";
+import "protoc-gen-openapiv2/options/annotations.proto";
+import "validate/validate.proto";
+
+option go_package = "github.com/odpf/proton/siren/v1beta1;sirenv1beta1";
+option java_multiple_files = true;
+option java_package = "io.odpf.proton.siren";
+option java_outer_classname = "ServiceManager";
+
+// These annotations are used when generating the OpenAPI file.
+option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_swagger) = {
+    info: {
+        title: "Siren APIs";
+        description: "Documentation of our Siren API with gRPC and\ngRPC-Gateway.";
+        version: "0.3.0";
+    };
+    schemes: HTTP;
+};
+
+service SirenService {
+    rpc Ping(PingRequest) returns (PingResponse) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "ping";
+            tags: "Ping";
+        };
+
+        option (google.api.http) = {
+            get: "/ping"
+        };   
+    }
+
+
+    rpc ListProviders(ListProvidersRequest) returns (ListProvidersResponse) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "list providers";
+            tags: "Provider";
+        };
+        
+        option (google.api.http) = {
+            get: "/v1beta1/providers"
+        };
+    }
+
+    rpc CreateProvider(CreateProviderRequest) returns (Provider) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "create a provider";
+            tags: "Provider";
+        };
+
+        option (google.api.http) = {
+            post: "/v1beta1/providers"
+            body: "*"
+        };
+    }
+
+    rpc GetProvider(GetProviderRequest) returns (Provider) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "get a provider";
+            tags: "Provider";
+        };
+
+        option (google.api.http) = {
+            get: "/v1beta1/providers/{id}"
+        };
+    }
+
+    rpc UpdateProvider(UpdateProviderRequest) returns (Provider) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "update a provider";
+            tags: "Provider";
+        };
+
+        option (google.api.http) = {
+            put: "/v1beta1/providers/{id}",
+            body: "*"
+        };
+    }
+
+    rpc DeleteProvider(DeleteProviderRequest) returns (google.protobuf.Empty) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "delete a provider";
+            tags: "Provider";
+        };
+
+        option (google.api.http) = {
+            delete: "/v1beta1/providers/{id}"
+        };
+    }
+
+    rpc SendReceiverNotification(SendReceiverNotificationRequest) returns (SendReceiverNotificationResponse) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "send notification to receiver";
+            tags: "Receiver";
+        };
+
+        option (google.api.http) = {
+            post: "/v1beta1/receivers/{id}/send"
+            body: "*"
+        };
+    }
+
+
+    rpc ListNamespaces(google.protobuf.Empty) returns (ListNamespacesResponse) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "list namespaces";
+            tags: "Namespace";
+        };
+
+        option (google.api.http) = {
+            get: "/v1beta1/namespaces"
+        };
+    }
+
+    rpc CreateNamespace(CreateNamespaceRequest) returns (Namespace) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "create a namespace";
+            tags: "Namespace";
+        };
+
+        option (google.api.http) = {
+            post: "/v1beta1/namespaces"
+            body: "*"
+        };
+    }
+
+    rpc GetNamespace(GetNamespaceRequest) returns (Namespace) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "get a namespace";
+            tags: "Namespace";
+        };
+
+        option (google.api.http) = {
+            get: "/v1beta1/namespaces/{id}"
+        };
+    }
+
+    rpc UpdateNamespace(UpdateNamespaceRequest) returns (Namespace) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "update a namespace";
+            tags: "Namespace";
+        };
+
+        option (google.api.http) = {
+            put: "/v1beta1/namespaces/{id}",
+            body: "*"
+        };
+    }
+
+    rpc DeleteNamespace(DeleteNamespaceRequest) returns (google.protobuf.Empty) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "delete a namespace";
+            tags: "Namespace";
+        };
+
+        option (google.api.http) = {
+            delete: "/v1beta1/namespaces/{id}"
+        };        
+    }
+
+    
+    rpc ListReceivers(google.protobuf.Empty) returns (ListReceiversResponse) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "list receivers";
+            tags: "Receiver";
+        };
+
+        option (google.api.http) = {
+            get: "/v1beta1/receivers"
+        };
+    }
+
+    rpc CreateReceiver(CreateReceiverRequest) returns (Receiver) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "create a receiver";
+            tags: "Receiver";
+        };
+        
+        option (google.api.http) = {
+            post: "/v1beta1/receivers"
+            body: "*"
+        };
+    }
+
+    rpc GetReceiver(GetReceiverRequest) returns (Receiver) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "get a receiver";
+            tags: "Receiver";
+        };
+
+        option (google.api.http) = {
+            get: "/v1beta1/receivers/{id}"
+        }; 
+    }
+
+    rpc UpdateReceiver(UpdateReceiverRequest) returns (Receiver) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "update a receiver";
+            tags: "Receiver";
+        };
+
+        option (google.api.http) = {
+            put: "/v1beta1/receivers/{id}",
+            body: "*"
+        };
+    }
+
+    rpc DeleteReceiver(DeleteReceiverRequest) returns (google.protobuf.Empty) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "delete a receiver";
+            tags: "Receiver";
+        };
+
+        option (google.api.http) = {
+            delete: "/v1beta1/receivers/{id}"
+        };
+    }
+
+
+    rpc ListAlerts(ListAlertsRequest) returns (Alerts) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "list alerts";
+            tags: "Alert";
+        };
+
+        option (google.api.http) = {
+            get: "/v1beta1/alerts/{provider_name}/{provider_id}"
+        };
+    }
+
+    rpc CreateCortexAlerts(CreateCortexAlertsRequest) returns (Alerts) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "create cortex alerts";
+            tags: "Alert";
+        };
+
+        option (google.api.http) = {
+            post: "/v1beta1/alerts/cortex/{provider_id}"
+            body: "*"
+        };
+    }
+
+    
+    rpc ListRules(ListRulesRequest) returns (ListRulesResponse) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "list rules";
+            tags: "Rule";
+        };
+
+        option (google.api.http) = {
+            get: "/v1beta1/rules"
+        };
+    }
+
+    rpc UpdateRule(UpdateRuleRequest) returns (UpdateRuleResponse) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "add/update a rule";
+            tags: "Rule";
+        };
+
+        option (google.api.http) = {
+            put: "/v1beta1/rules"
+            body: "*"
+        };
+    }
+    
+    
+    rpc ListTemplates(ListTemplatesRequest) returns (ListTemplatesResponse) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "list templates";
+            tags: "Template";
+        };
+
+        option (google.api.http) = {
+            get: "/v1beta1/templates"
+        };
+    }
+
+    rpc GetTemplateByName(GetTemplateByNameRequest) returns (TemplateResponse) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "get a template";
+            tags: "Template";
+        };
+
+        option (google.api.http) = {
+            get: "/v1beta1/templates/{name}"
+        };
+    }
+
+    rpc UpsertTemplate(UpsertTemplateRequest) returns (TemplateResponse) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "add/update a template";
+            tags: "Template";
+        };
+
+        option (google.api.http) = {
+            put: "/v1beta1/templates",
+            body: "*"
+        };
+    }
+
+    rpc DeleteTemplate(DeleteTemplateRequest) returns (DeleteTemplateResponse) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "delete a template";
+            tags: "Template";
+        };
+
+        option (google.api.http) = {
+            delete: "/v1beta1/templates/{name}",
+        };
+    }
+
+    rpc RenderTemplate(RenderTemplateRequest) returns (RenderTemplateResponse) {
+        option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+            summary: "render a template";
+            tags: "Template";
+        };
+        
+        option (google.api.http) = {
+            post: "/v1beta1/templates/{name}/render",
+            body: "*"
+        };
+    }
+}
+
+message PingRequest {}
+
+message PingResponse {
+    string message = 1;
+}
+
+enum Types {
+    CORTEX = 0;
+}
+
+message Provider {
+    uint64 id = 1;
+    string host = 2;
+    string urn = 3;
+    string name = 4;
+    string type = 5 [(validate.rules).string = {in: ["cortex"]}];
+    google.protobuf.Struct credentials = 6;
+    map<string, string> labels = 7;
+    google.protobuf.Timestamp created_at = 8;
+    google.protobuf.Timestamp updated_at = 9;
+}
+
+message ListProvidersRequest {
+    string urn = 1;
+    string type = 2;
+}
+
+message ListProvidersResponse {
+    repeated Provider providers = 1;
+}
+
+message CreateProviderRequest {
+    string host = 1 [(validate.rules).string.uri = true];
+    string urn = 2 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+    string name = 3 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+    string type = 4 [(validate.rules).string = {in: ["cortex"]}];
+    google.protobuf.Struct credentials = 5;
+    map<string, string> labels = 6;
+}
+
+message GetProviderRequest {
+    uint64 id = 1;
+}
+
+message UpdateProviderRequest {
+    uint64 id = 1;
+    string host = 2 [(validate.rules).string.uri = true];
+    string name = 3 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+    string type = 4 [(validate.rules).string = {in: ["cortex"]}];
+    google.protobuf.Struct credentials = 5;
+    map<string, string> labels = 6;
+}
+
+message DeleteProviderRequest {
+    uint64 id = 1;
+}
+
+
+message Namespace {
+    uint64 id = 1;
+    string urn = 2;
+    string name = 3;
+    uint64 provider = 4;
+    google.protobuf.Struct credentials = 5;
+    map<string, string> labels = 6;
+    google.protobuf.Timestamp created_at = 7;
+    google.protobuf.Timestamp updated_at = 8;
+}
+
+message ListNamespacesResponse {
+    repeated Namespace namespaces = 1;
+}
+
+message CreateNamespaceRequest {
+    string name = 1 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+    string urn = 2 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+    uint64 provider = 3;
+    google.protobuf.Struct credentials = 4;
+    map<string, string> labels = 5;
+    google.protobuf.Timestamp created_at = 6;
+    google.protobuf.Timestamp updated_at = 7;
+}
+
+message GetNamespaceRequest {
+    uint64 id = 1;
+}
+
+message UpdateNamespaceRequest {
+    uint64 id = 1;
+    string name = 2 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+    uint64 provider = 3;
+    google.protobuf.Struct credentials = 4;
+    map<string, string> labels = 5;
+}
+
+message DeleteNamespaceRequest {
+    uint64 id = 1;
+}
+
+message Receiver {
+    uint64 id = 1;
+    string name = 2;
+    string type = 3 [(validate.rules).string = {in: ["slack", "pagerduty", "http"]}];
+    map<string, string> labels = 4;
+    google.protobuf.Struct configurations = 5;
+    google.protobuf.Struct data = 6;
+    google.protobuf.Timestamp created_at = 7;
+    google.protobuf.Timestamp updated_at = 8;
+}
+
+message ListReceiversResponse {
+    repeated Receiver receivers = 1;
+}
+
+message CreateReceiverRequest {
+    string name = 1 [(validate.rules).string.pattern = "^[A-Za-z0-9_.-]+$"];
+    string type = 2 [(validate.rules).string = {in: ["slack", "pagerduty", "http"]}];
+    map<string, string> labels = 3;
+    google.protobuf.Struct configurations = 4;
+}
+
+message GetReceiverRequest {
+    uint64 id = 1;
+}
+
+message UpdateReceiverRequest {
+    uint64 id = 1;
+    string name = 2 [(validate.rules).string.pattern = "^[A-Za-z0-9_.-]+$"];
+    string type = 3 [(validate.rules).string = {in: ["slack", "pagerduty", "http"]}];
+    map<string, string> labels = 4;
+    google.protobuf.Struct configurations = 5;
+}
+
+message DeleteReceiverRequest {
+    uint64 id = 1;
+}
+
+message SendReceiverNotificationRequest{
+    uint64 id = 1;
+    message SlackPayload {
+        string message = 1;
+        string receiver_name = 2 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+        string receiver_type = 3 [(validate.rules).string = {in: ["channel", "user"]}];
+        repeated google.protobuf.Struct blocks = 4;
+    }
+
+    oneof data {
+        SlackPayload slack = 2;
+    }
+}
+
+message SendReceiverNotificationResponse {
+    bool ok = 1;
+}
+
+message ListAlertsRequest {
+    string provider_name = 1 [(validate.rules).string = {in: ["cortex"]}];
+    uint64 provider_id = 2;
+    string resource_name = 3 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+    uint64 start_time = 4;
+    uint64 end_time = 5;
+}
+
+message Alerts {
+    repeated Alert alerts = 1;
+}
+
+message Alert {
+    uint64 id = 1;
+    uint64 provider_id = 2;
+    string resource_name = 3;
+    string metric_name = 4;
+    string metric_value = 5;
+    string severity = 6;
+    string rule = 7;
+    google.protobuf.Timestamp triggered_at = 8;
+}
+
+message CreateCortexAlertsRequest {
+    uint64 provider_id = 1;
+    repeated CortexAlert alerts = 2;
+}
+
+message CortexAlert {
+    Annotations annotations = 1;
+    Labels labels = 2;
+    string status = 3;
+    google.protobuf.Timestamp starts_at=4;
+}
+
+message Annotations {
+    string metric_name = 1;
+    string metric_value = 2;
+    string resource = 3;
+    string template = 4;
+}
+
+message Labels {
+    string severity = 1;
+}
+
+message Rule {
+    uint64 id = 1;
+    string name = 2;
+    bool enabled = 3;
+    string group_name = 4;
+    string namespace = 5;
+    string template = 6;
+    repeated Variables variables = 7;
+    google.protobuf.Timestamp created_at = 8;
+    google.protobuf.Timestamp updated_at = 9;
+    uint64 provider_namespace = 10 [(validate.rules).uint64.gte = 0];;
+}
+
+message Variables {
+    string name = 1 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+    string value = 2 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+    string type = 3;
+    string description = 4;
+}
+
+
+message ListRulesRequest {
+    string name = 1;
+    string namespace = 2;
+    string group_name = 3;
+    string template = 4;
+    uint64 provider_namespace = 5;
+}
+
+message ListRulesResponse {
+    repeated Rule rules = 1;
+}
+
+message UpdateRuleResponse {
+    Rule rule = 1;
+}
+
+message UpdateRuleRequest {
+    bool enabled = 1;
+    string group_name = 2 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+    string namespace = 3 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+    string template = 4 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+    repeated Variables variables = 5;
+    uint64 provider_namespace = 6;
+}
+
+message ListTemplatesRequest{
+    string tag = 1;
+}
+
+message TemplateVariables {
+    string name = 1 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+    string type = 2 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+    string default = 3;
+    string description = 4;
+}
+
+message Template {
+    uint64 id = 1;
+    string name = 2 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+    string body = 3 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+    repeated string tags = 4 [(validate.rules).repeated.min_items = 1];
+    google.protobuf.Timestamp created_at = 5;
+    google.protobuf.Timestamp updated_at = 6;
+    repeated TemplateVariables variables = 7 [(validate.rules).repeated.min_items = 1];
+}
+
+message TemplateResponse {
+    Template template = 1;
+}
+
+message UpsertTemplateRequest {
+    uint64 id = 1;
+    string name = 2 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+    string body = 3;
+    repeated string tags = 4 [(validate.rules).repeated.min_items = 1];
+    repeated TemplateVariables variables = 5 [(validate.rules).repeated.min_items = 1];
+}
+
+message ListTemplatesResponse {
+    repeated Template templates = 1;
+}
+
+message GetTemplateByNameRequest {
+    string name = 1 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+}
+
+message DeleteTemplateRequest {
+    string name = 1;
+}
+
+message DeleteTemplateResponse {}
+
+message RenderTemplateRequest {
+    string name = 1 [(validate.rules).string.pattern = "^[A-Za-z0-9_-]+$"];
+    map<string, string> variables = 2;
+}
+
+message RenderTemplateResponse {
+    string body = 1;
+}