diff --git a/internal/app/coroutines/createPromise.go b/internal/app/coroutines/createPromise.go
index 7598366f..ce373131 100644
--- a/internal/app/coroutines/createPromise.go
+++ b/internal/app/coroutines/createPromise.go
@@ -15,7 +15,7 @@ import (
 func CreatePromise(c gocoro.Coroutine[*t_aio.Submission, *t_aio.Completion, any], r *t_api.Request) (*t_api.Response, error) {
 	util.Assert(r.Kind == t_api.CreatePromise, "must be create promise")
 
-	return createPromiseAndTask(c, r, r.CreatePromise)
+	return createPromiseAndTask(c, r, r.CreatePromise, nil)
 }
 
 func CreatePromiseAndTask(c gocoro.Coroutine[*t_aio.Submission, *t_aio.Completion, any], r *t_api.Request) (*t_api.Response, error) {
@@ -23,18 +23,15 @@ func CreatePromiseAndTask(c gocoro.Coroutine[*t_aio.Submission, *t_aio.Completio
 	util.Assert(r.CreatePromiseAndTask.Promise.Id == r.CreatePromiseAndTask.Task.PromiseId, "promise ids must match")
 	util.Assert(r.CreatePromiseAndTask.Promise.Timeout == r.CreatePromiseAndTask.Task.Timeout, "timeouts must match")
 
-	return createPromiseAndTask(c, r, r.CreatePromiseAndTask.Promise, &t_aio.Command{
-		Kind: t_aio.CreateTask,
-		CreateTask: &t_aio.CreateTaskCommand{
-			Recv:      r.CreatePromiseAndTask.Task.Recv,
-			Mesg:      &message.Mesg{Type: message.Invoke, Root: r.CreatePromiseAndTask.Task.PromiseId, Leaf: r.CreatePromiseAndTask.Task.PromiseId},
-			Timeout:   r.CreatePromiseAndTask.Task.Timeout,
-			ProcessId: &r.CreatePromiseAndTask.Task.ProcessId,
-			State:     task.Claimed,
-			Ttl:       r.CreatePromiseAndTask.Task.Ttl,
-			ExpiresAt: c.Time() + int64(r.CreatePromiseAndTask.Task.Ttl),
-			CreatedOn: c.Time(),
-		},
+	return createPromiseAndTask(c, r, r.CreatePromiseAndTask.Promise, &t_aio.CreateTaskCommand{
+		Recv:      nil,
+		Mesg:      &message.Mesg{Type: message.Invoke, Root: r.CreatePromiseAndTask.Task.PromiseId, Leaf: r.CreatePromiseAndTask.Task.PromiseId},
+		Timeout:   r.CreatePromiseAndTask.Task.Timeout,
+		ProcessId: &r.CreatePromiseAndTask.Task.ProcessId,
+		State:     task.Claimed,
+		Ttl:       r.CreatePromiseAndTask.Task.Ttl,
+		ExpiresAt: c.Time() + int64(r.CreatePromiseAndTask.Task.Ttl),
+		CreatedOn: c.Time(),
 	})
 }
 
@@ -42,7 +39,7 @@ func createPromiseAndTask(
 	c gocoro.Coroutine[*t_aio.Submission, *t_aio.Completion, any],
 	r *t_api.Request,
 	createPromiseReq *t_api.CreatePromiseRequest,
-	additionalCmds ...*t_aio.Command,
+	taskCmd *t_aio.CreateTaskCommand,
 ) (*t_api.Response, error) {
 	util.Assert(r.Kind == t_api.CreatePromise || r.Kind == t_api.CreatePromiseAndTask, "must be create promise or variant")
 
@@ -82,7 +79,7 @@ func createPromiseAndTask(
 	util.Assert(result.RowsReturned == 0 || result.RowsReturned == 1, "result must return 0 or 1 rows")
 
 	if result.RowsReturned == 0 {
-		cmd := &t_aio.CreatePromiseCommand{
+		promiseCmd := &t_aio.CreatePromiseCommand{
 			Id:             createPromiseReq.Id,
 			Param:          createPromiseReq.Param,
 			Timeout:        createPromiseReq.Timeout,
@@ -92,7 +89,7 @@ func createPromiseAndTask(
 		}
 
 		// if the promise does not exist, create it
-		completion, err := gocoro.SpawnAndAwait(c, createPromise(r.Tags, cmd, additionalCmds...))
+		completion, err := gocoro.SpawnAndAwait(c, createPromise(r.Tags, promiseCmd, taskCmd))
 		if err != nil {
 			return nil, err
 		}
@@ -100,7 +97,7 @@ func createPromiseAndTask(
 		if completion.Store.Results[0].CreatePromise.RowsAffected == 0 {
 			// It's possible that the promise was created by another coroutine
 			// while we were creating. In that case, we should just retry.
-			return createPromiseAndTask(c, r, createPromiseReq, additionalCmds...)
+			return createPromiseAndTask(c, r, createPromiseReq, taskCmd)
 		}
 
 		// set status
@@ -108,33 +105,32 @@ func createPromiseAndTask(
 
 		// set promise
 		p = &promise.Promise{
-			Id:                      cmd.Id,
+			Id:                      promiseCmd.Id,
 			State:                   promise.Pending,
-			Param:                   cmd.Param,
-			Timeout:                 cmd.Timeout,
-			IdempotencyKeyForCreate: cmd.IdempotencyKey,
-			Tags:                    cmd.Tags,
-			CreatedOn:               &cmd.CreatedOn,
+			Param:                   promiseCmd.Param,
+			Timeout:                 promiseCmd.Timeout,
+			IdempotencyKeyForCreate: promiseCmd.IdempotencyKey,
+			Tags:                    promiseCmd.Tags,
+			CreatedOn:               &promiseCmd.CreatedOn,
 		}
 
 		switch r.Kind {
 		case t_api.CreatePromiseAndTask:
-			util.Assert(additionalCmds[0].Kind == t_aio.CreateTask, "command must be create task")
+			util.Assert(taskCmd != nil, "create task cmd must not be nil")
 			util.Assert(completion.Store.Results[1].Kind == t_aio.CreateTask, "completion must be create task")
-			cmd := additionalCmds[0].CreateTask
 
 			t = &task.Task{
 				Id:        completion.Store.Results[1].CreateTask.LastInsertId,
-				ProcessId: cmd.ProcessId,
-				State:     cmd.State,
-				Recv:      cmd.Recv,
-				Mesg:      cmd.Mesg,
-				Timeout:   cmd.Timeout,
+				ProcessId: taskCmd.ProcessId,
+				State:     taskCmd.State,
+				Recv:      taskCmd.Recv,
+				Mesg:      taskCmd.Mesg,
+				Timeout:   taskCmd.Timeout,
 				Counter:   1,
 				Attempt:   0,
-				Ttl:       cmd.Ttl,
-				ExpiresAt: cmd.ExpiresAt,
-				CreatedOn: &cmd.CreatedOn,
+				Ttl:       taskCmd.Ttl,
+				ExpiresAt: taskCmd.ExpiresAt,
+				CreatedOn: &taskCmd.CreatedOn,
 			}
 		}
 	} else {
@@ -161,7 +157,7 @@ func createPromiseAndTask(
 			if !ok {
 				// It's possible that the promise was created by another coroutine
 				// while we were timing out. In that case, we should just retry.
-				return createPromiseAndTask(c, r, createPromiseReq, additionalCmds...)
+				return createPromiseAndTask(c, r, createPromiseReq, taskCmd)
 			}
 
 			// set status to ok if not strict and idempotency keys match
@@ -196,64 +192,77 @@ func createPromiseAndTask(
 	return res, nil
 }
 
-func createPromise(tags map[string]string, cmd *t_aio.CreatePromiseCommand, additionalCmds ...*t_aio.Command) gocoro.CoroutineFunc[*t_aio.Submission, *t_aio.Completion, *t_aio.Completion] {
-	if cmd.Param.Headers == nil {
-		cmd.Param.Headers = map[string]string{}
+func createPromise(tags map[string]string, promiseCmd *t_aio.CreatePromiseCommand, taskCmd *t_aio.CreateTaskCommand, additionalCmds ...*t_aio.Command) gocoro.CoroutineFunc[*t_aio.Submission, *t_aio.Completion, *t_aio.Completion] {
+	if promiseCmd.Param.Headers == nil {
+		promiseCmd.Param.Headers = map[string]string{}
 	}
-	if cmd.Param.Data == nil {
-		cmd.Param.Data = []byte{}
+	if promiseCmd.Param.Data == nil {
+		promiseCmd.Param.Data = []byte{}
 	}
-	if cmd.Tags == nil {
-		cmd.Tags = map[string]string{}
+	if promiseCmd.Tags == nil {
+		promiseCmd.Tags = map[string]string{}
 	}
 
 	return func(c gocoro.Coroutine[*t_aio.Submission, *t_aio.Completion, *t_aio.Completion]) (*t_aio.Completion, error) {
 		// add create promise command
 		commands := []*t_aio.Command{{
 			Kind:          t_aio.CreatePromise,
-			CreatePromise: cmd,
+			CreatePromise: promiseCmd,
 		}}
 
-		// add additional commands
-		commands = append(commands, additionalCmds...)
-
 		// check router to see if a task needs to be created
 		completion, err := gocoro.YieldAndAwait(c, &t_aio.Submission{
 			Kind: t_aio.Router,
 			Tags: tags,
 			Router: &t_aio.RouterSubmission{
 				Promise: &promise.Promise{
-					Id:                      cmd.Id,
+					Id:                      promiseCmd.Id,
 					State:                   promise.Pending,
-					Param:                   cmd.Param,
-					Timeout:                 cmd.Timeout,
-					IdempotencyKeyForCreate: cmd.IdempotencyKey,
-					Tags:                    cmd.Tags,
-					CreatedOn:               &cmd.CreatedOn,
+					Param:                   promiseCmd.Param,
+					Timeout:                 promiseCmd.Timeout,
+					IdempotencyKeyForCreate: promiseCmd.IdempotencyKey,
+					Tags:                    promiseCmd.Tags,
+					CreatedOn:               &promiseCmd.CreatedOn,
 				},
 			},
 		})
 
 		if err != nil {
-			slog.Warn("failed to match promise", "cmd", cmd, "err", err)
+			slog.Warn("failed to match promise", "cmd", promiseCmd, "err", err)
+		}
+
+		if taskCmd != nil && (err != nil || !completion.Router.Matched) {
+			slog.Error("failed to match promise when creating a task", "cmd", promiseCmd, "taskCmd", taskCmd)
+			return nil, t_api.NewError(t_api.StatusPromiseRecvNotFound, err)
 		}
 
 		if err == nil && completion.Router.Matched {
 			util.Assert(completion.Router.Recv != nil, "recv must not be nil")
 
-			// add create task command if matched
-			commands = append(commands, &t_aio.Command{
-				Kind: t_aio.CreateTask,
-				CreateTask: &t_aio.CreateTaskCommand{
+			// If there is a taskCmd just update the Recv otherwise create a tasks for the match
+			if taskCmd != nil {
+				taskCmd.Recv = completion.Router.Recv
+			} else {
+				taskCmd = &t_aio.CreateTaskCommand{
 					Recv:      completion.Router.Recv,
-					Mesg:      &message.Mesg{Type: message.Invoke, Root: cmd.Id, Leaf: cmd.Id},
-					Timeout:   cmd.Timeout,
+					Mesg:      &message.Mesg{Type: message.Invoke, Root: promiseCmd.Id, Leaf: promiseCmd.Id},
+					Timeout:   promiseCmd.Timeout,
 					State:     task.Init,
-					CreatedOn: cmd.CreatedOn,
-				},
+					CreatedOn: promiseCmd.CreatedOn,
+				}
+
+			}
+
+			// add create task command if matched
+			commands = append(commands, &t_aio.Command{
+				Kind:       t_aio.CreateTask,
+				CreateTask: taskCmd,
 			})
 		}
 
+		// add additional commands
+		commands = append(commands, additionalCmds...)
+
 		// yield commands
 		completion, err = gocoro.YieldAndAwait(c, &t_aio.Submission{
 			Kind: t_aio.Store,
diff --git a/internal/app/coroutines/schedulePromises.go b/internal/app/coroutines/schedulePromises.go
index 6be5ed83..3ee86c83 100644
--- a/internal/app/coroutines/schedulePromises.go
+++ b/internal/app/coroutines/schedulePromises.go
@@ -86,7 +86,7 @@ func SchedulePromises(config *system.Config, tags map[string]string) gocoro.Coro
 				CreatedOn: c.Time(),
 			}
 
-			awaiting[i] = gocoro.Spawn(c, createPromise(tags, commands[i], &t_aio.Command{
+			awaiting[i] = gocoro.Spawn(c, createPromise(tags, commands[i], nil, &t_aio.Command{
 				Kind: t_aio.UpdateSchedule,
 				UpdateSchedule: &t_aio.UpdateScheduleCommand{
 					Id:          s.Id,
diff --git a/internal/app/subsystems/api/grpc/pb/promise.pb.go b/internal/app/subsystems/api/grpc/pb/promise.pb.go
index e1cb8f5e..1b19b61b 100644
--- a/internal/app/subsystems/api/grpc/pb/promise.pb.go
+++ b/internal/app/subsystems/api/grpc/pb/promise.pb.go
@@ -514,7 +514,6 @@ type CreatePromiseTaskRequest struct {
 
 	ProcessId string `protobuf:"bytes,1,opt,name=processId,proto3" json:"processId,omitempty"`
 	Ttl       int32  `protobuf:"varint,2,opt,name=ttl,proto3" json:"ttl,omitempty"`
-	Recv      *Recv  `protobuf:"bytes,3,opt,name=recv,proto3" json:"recv,omitempty"`
 }
 
 func (x *CreatePromiseTaskRequest) Reset() {
@@ -561,13 +560,6 @@ func (x *CreatePromiseTaskRequest) GetTtl() int32 {
 	return 0
 }
 
-func (x *CreatePromiseTaskRequest) GetRecv() *Recv {
-	if x != nil {
-		return x.Recv
-	}
-	return nil
-}
-
 type CreatePromiseAndTaskResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1091,54 +1083,35 @@ var file_internal_app_subsystems_api_grpc_pb_promise_proto_rawDesc = []byte{
 	0x0a, 0x04, 0x74, 0x61, 0x73, 0x6b, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x21, 0x2e, 0x70,
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-	0x65, 0x63, 0x74, 0x50, 0x72, 0x6f, 0x6d, 0x69, 0x73, 0x65, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e,
-	0x73, 0x65, 0x22, 0x00, 0x12, 0x50, 0x0a, 0x0d, 0x43, 0x61, 0x6e, 0x63, 0x65, 0x6c, 0x50, 0x72,
-	0x6f, 0x6d, 0x69, 0x73, 0x65, 0x12, 0x1d, 0x2e, 0x70, 0x72, 0x6f, 0x6d, 0x69, 0x73, 0x65, 0x2e,
-	0x43, 0x61, 0x6e, 0x63, 0x65, 0x6c, 0x50, 0x72, 0x6f, 0x6d, 0x69, 0x73, 0x65, 0x52, 0x65, 0x71,
-	0x75, 0x65, 0x73, 0x74, 0x1a, 0x1e, 0x2e, 0x70, 0x72, 0x6f, 0x6d, 0x69, 0x73, 0x65, 0x2e, 0x43,
-	0x61, 0x6e, 0x63, 0x65, 0x6c, 0x50, 0x72, 0x6f, 0x6d, 0x69, 0x73, 0x65, 0x52, 0x65, 0x73, 0x70,
-	0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x42, 0x44, 0x5a, 0x42, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62,
-	0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x72, 0x65, 0x73, 0x6f, 0x6e, 0x61, 0x74, 0x65, 0x68, 0x71, 0x2f,
-	0x72, 0x65, 0x73, 0x6f, 0x6e, 0x61, 0x74, 0x65, 0x2f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x61,
-	0x6c, 0x2f, 0x61, 0x70, 0x70, 0x2f, 0x73, 0x75, 0x62, 0x73, 0x79, 0x73, 0x74, 0x65, 0x6d, 0x73,
-	0x2f, 0x61, 0x70, 0x69, 0x2f, 0x67, 0x72, 0x70, 0x63, 0x2f, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72,
-	0x6f, 0x74, 0x6f, 0x33,
+	0x72, 0x6f, 0x6d, 0x69, 0x73, 0x65, 0x41, 0x6e, 0x64, 0x54, 0x61, 0x73, 0x6b, 0x52, 0x65, 0x73,
+	0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x12, 0x53, 0x0a, 0x0e, 0x52, 0x65, 0x73, 0x6f, 0x6c,
+	0x76, 0x65, 0x50, 0x72, 0x6f, 0x6d, 0x69, 0x73, 0x65, 0x12, 0x1e, 0x2e, 0x70, 0x72, 0x6f, 0x6d,
+	0x69, 0x73, 0x65, 0x2e, 0x52, 0x65, 0x73, 0x6f, 0x6c, 0x76, 0x65, 0x50, 0x72, 0x6f, 0x6d, 0x69,
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+	0x73, 0x65, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x12, 0x50, 0x0a, 0x0d,
+	0x52, 0x65, 0x6a, 0x65, 0x63, 0x74, 0x50, 0x72, 0x6f, 0x6d, 0x69, 0x73, 0x65, 0x12, 0x1d, 0x2e,
+	0x70, 0x72, 0x6f, 0x6d, 0x69, 0x73, 0x65, 0x2e, 0x52, 0x65, 0x6a, 0x65, 0x63, 0x74, 0x50, 0x72,
+	0x6f, 0x6d, 0x69, 0x73, 0x65, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x1e, 0x2e, 0x70,
+	0x72, 0x6f, 0x6d, 0x69, 0x73, 0x65, 0x2e, 0x52, 0x65, 0x6a, 0x65, 0x63, 0x74, 0x50, 0x72, 0x6f,
+	0x6d, 0x69, 0x73, 0x65, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x12, 0x50,
+	0x0a, 0x0d, 0x43, 0x61, 0x6e, 0x63, 0x65, 0x6c, 0x50, 0x72, 0x6f, 0x6d, 0x69, 0x73, 0x65, 0x12,
+	0x1d, 0x2e, 0x70, 0x72, 0x6f, 0x6d, 0x69, 0x73, 0x65, 0x2e, 0x43, 0x61, 0x6e, 0x63, 0x65, 0x6c,
+	0x50, 0x72, 0x6f, 0x6d, 0x69, 0x73, 0x65, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x1e,
+	0x2e, 0x70, 0x72, 0x6f, 0x6d, 0x69, 0x73, 0x65, 0x2e, 0x43, 0x61, 0x6e, 0x63, 0x65, 0x6c, 0x50,
+	0x72, 0x6f, 0x6d, 0x69, 0x73, 0x65, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00,
+	0x42, 0x44, 0x5a, 0x42, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x72,
+	0x65, 0x73, 0x6f, 0x6e, 0x61, 0x74, 0x65, 0x68, 0x71, 0x2f, 0x72, 0x65, 0x73, 0x6f, 0x6e, 0x61,
+	0x74, 0x65, 0x2f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x61, 0x6c, 0x2f, 0x61, 0x70, 0x70, 0x2f,
+	0x73, 0x75, 0x62, 0x73, 0x79, 0x73, 0x74, 0x65, 0x6d, 0x73, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x67,
+	0x72, 0x70, 0x63, 0x2f, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -1241,7 +1230,6 @@ var file_internal_app_subsystems_api_grpc_pb_promise_proto_goTypes = []any{
 	nil,                                  // 17: promise.CreatePromiseRequest.TagsEntry
 	(*Promise)(nil),                      // 18: promise_t.Promise
 	(*Value)(nil),                        // 19: promise_t.Value
-	(*Recv)(nil),                         // 20: callback_t.Recv
 }
 var file_internal_app_subsystems_api_grpc_pb_promise_proto_depIdxs = []int32{
 	18, // 0: promise.ReadPromiseResponse.promise:type_name -> promise_t.Promise
@@ -1253,33 +1241,32 @@ var file_internal_app_subsystems_api_grpc_pb_promise_proto_depIdxs = []int32{
 	18, // 6: promise.CreatePromiseResponse.promise:type_name -> promise_t.Promise
 	5,  // 7: promise.CreatePromiseAndTaskRequest.promise:type_name -> promise.CreatePromiseRequest
 	8,  // 8: promise.CreatePromiseAndTaskRequest.task:type_name -> promise.CreatePromiseTaskRequest
-	20, // 9: promise.CreatePromiseTaskRequest.recv:type_name -> callback_t.Recv
-	18, // 10: promise.CreatePromiseAndTaskResponse.promise:type_name -> promise_t.Promise
-	19, // 11: promise.ResolvePromiseRequest.value:type_name -> promise_t.Value
-	18, // 12: promise.ResolvePromiseResponse.promise:type_name -> promise_t.Promise
-	19, // 13: promise.RejectPromiseRequest.value:type_name -> promise_t.Value
-	18, // 14: promise.RejectPromiseResponse.promise:type_name -> promise_t.Promise
-	19, // 15: promise.CancelPromiseRequest.value:type_name -> promise_t.Value
-	18, // 16: promise.CancelPromiseResponse.promise:type_name -> promise_t.Promise
-	1,  // 17: promise.Promises.ReadPromise:input_type -> promise.ReadPromiseRequest
-	3,  // 18: promise.Promises.SearchPromises:input_type -> promise.SearchPromisesRequest
-	5,  // 19: promise.Promises.CreatePromise:input_type -> promise.CreatePromiseRequest
-	7,  // 20: promise.Promises.CreatePromiseAndTask:input_type -> promise.CreatePromiseAndTaskRequest
-	10, // 21: promise.Promises.ResolvePromise:input_type -> promise.ResolvePromiseRequest
-	12, // 22: promise.Promises.RejectPromise:input_type -> promise.RejectPromiseRequest
-	14, // 23: promise.Promises.CancelPromise:input_type -> promise.CancelPromiseRequest
-	2,  // 24: promise.Promises.ReadPromise:output_type -> promise.ReadPromiseResponse
-	4,  // 25: promise.Promises.SearchPromises:output_type -> promise.SearchPromisesResponse
-	6,  // 26: promise.Promises.CreatePromise:output_type -> promise.CreatePromiseResponse
-	9,  // 27: promise.Promises.CreatePromiseAndTask:output_type -> promise.CreatePromiseAndTaskResponse
-	11, // 28: promise.Promises.ResolvePromise:output_type -> promise.ResolvePromiseResponse
-	13, // 29: promise.Promises.RejectPromise:output_type -> promise.RejectPromiseResponse
-	15, // 30: promise.Promises.CancelPromise:output_type -> promise.CancelPromiseResponse
-	24, // [24:31] is the sub-list for method output_type
-	17, // [17:24] is the sub-list for method input_type
-	17, // [17:17] is the sub-list for extension type_name
-	17, // [17:17] is the sub-list for extension extendee
-	0,  // [0:17] is the sub-list for field type_name
+	18, // 9: promise.CreatePromiseAndTaskResponse.promise:type_name -> promise_t.Promise
+	19, // 10: promise.ResolvePromiseRequest.value:type_name -> promise_t.Value
+	18, // 11: promise.ResolvePromiseResponse.promise:type_name -> promise_t.Promise
+	19, // 12: promise.RejectPromiseRequest.value:type_name -> promise_t.Value
+	18, // 13: promise.RejectPromiseResponse.promise:type_name -> promise_t.Promise
+	19, // 14: promise.CancelPromiseRequest.value:type_name -> promise_t.Value
+	18, // 15: promise.CancelPromiseResponse.promise:type_name -> promise_t.Promise
+	1,  // 16: promise.Promises.ReadPromise:input_type -> promise.ReadPromiseRequest
+	3,  // 17: promise.Promises.SearchPromises:input_type -> promise.SearchPromisesRequest
+	5,  // 18: promise.Promises.CreatePromise:input_type -> promise.CreatePromiseRequest
+	7,  // 19: promise.Promises.CreatePromiseAndTask:input_type -> promise.CreatePromiseAndTaskRequest
+	10, // 20: promise.Promises.ResolvePromise:input_type -> promise.ResolvePromiseRequest
+	12, // 21: promise.Promises.RejectPromise:input_type -> promise.RejectPromiseRequest
+	14, // 22: promise.Promises.CancelPromise:input_type -> promise.CancelPromiseRequest
+	2,  // 23: promise.Promises.ReadPromise:output_type -> promise.ReadPromiseResponse
+	4,  // 24: promise.Promises.SearchPromises:output_type -> promise.SearchPromisesResponse
+	6,  // 25: promise.Promises.CreatePromise:output_type -> promise.CreatePromiseResponse
+	9,  // 26: promise.Promises.CreatePromiseAndTask:output_type -> promise.CreatePromiseAndTaskResponse
+	11, // 27: promise.Promises.ResolvePromise:output_type -> promise.ResolvePromiseResponse
+	13, // 28: promise.Promises.RejectPromise:output_type -> promise.RejectPromiseResponse
+	15, // 29: promise.Promises.CancelPromise:output_type -> promise.CancelPromiseResponse
+	23, // [23:30] is the sub-list for method output_type
+	16, // [16:23] is the sub-list for method input_type
+	16, // [16:16] is the sub-list for extension type_name
+	16, // [16:16] is the sub-list for extension extendee
+	0,  // [0:16] is the sub-list for field type_name
 }
 
 func init() { file_internal_app_subsystems_api_grpc_pb_promise_proto_init() }
diff --git a/internal/app/subsystems/api/grpc/pb/promise.proto b/internal/app/subsystems/api/grpc/pb/promise.proto
index c67f9d4e..26306bb6 100644
--- a/internal/app/subsystems/api/grpc/pb/promise.proto
+++ b/internal/app/subsystems/api/grpc/pb/promise.proto
@@ -70,7 +70,6 @@ message CreatePromiseAndTaskRequest {
 message CreatePromiseTaskRequest {
     string processId = 1;
     int32 ttl = 2;
-    callback_t.Recv recv = 3;
 }
 
 message CreatePromiseAndTaskResponse {
diff --git a/internal/app/subsystems/api/grpc/promise.go b/internal/app/subsystems/api/grpc/promise.go
index 5b77f653..a04f1964 100644
--- a/internal/app/subsystems/api/grpc/promise.go
+++ b/internal/app/subsystems/api/grpc/promise.go
@@ -128,11 +128,6 @@ func (s *server) CreatePromiseAndTask(c context.Context, r *pb.CreatePromiseAndT
 		data = r.Promise.Param.Data
 	}
 
-	recv, rErr := protoRecv(r.Task.Recv)
-	if rErr != nil {
-		return nil, rErr
-	}
-
 	res, err := s.api.Process(r.Promise.RequestId, &t_api.Request{
 		Kind: t_api.CreatePromiseAndTask,
 		CreatePromiseAndTask: &t_api.CreatePromiseAndTaskRequest{
@@ -149,7 +144,6 @@ func (s *server) CreatePromiseAndTask(c context.Context, r *pb.CreatePromiseAndT
 				ProcessId: r.Task.ProcessId,
 				Ttl:       int(r.Task.Ttl),
 				Timeout:   r.Promise.Timeout,
-				Recv:      recv,
 			},
 		},
 	})
diff --git a/internal/app/subsystems/api/http/promise.go b/internal/app/subsystems/api/http/promise.go
index 7dc3df91..fcc20bad 100644
--- a/internal/app/subsystems/api/http/promise.go
+++ b/internal/app/subsystems/api/http/promise.go
@@ -1,7 +1,6 @@
 package http
 
 import (
-	"encoding/json"
 	"errors"
 
 	"github.com/resonatehq/resonate/internal/app/subsystems/api"
@@ -161,9 +160,8 @@ type createPromiseAndTaskBody struct {
 }
 
 type createPromiseTaskBody struct {
-	ProcessId string          `json:"processId" binding:"required"`
-	Ttl       int             `json:"ttl"`
-	Recv      json.RawMessage `json:"recv" binding:"required"`
+	ProcessId string `json:"processId" binding:"required"`
+	Ttl       int    `json:"ttl"`
 }
 
 func (s *server) createPromiseAndTask(c *gin.Context) {
@@ -199,7 +197,6 @@ func (s *server) createPromiseAndTask(c *gin.Context) {
 				ProcessId: body.Task.ProcessId,
 				Ttl:       body.Task.Ttl,
 				Timeout:   body.Promise.Timeout,
-				Recv:      body.Task.Recv,
 			},
 		},
 	})
diff --git a/internal/app/subsystems/api/test/cases.go b/internal/app/subsystems/api/test/cases.go
index 9e0bdbe9..564c5c0e 100644
--- a/internal/app/subsystems/api/test/cases.go
+++ b/internal/app/subsystems/api/test/cases.go
@@ -692,13 +692,13 @@ var TestCases = []*testCase{
 				Promise: &t_api.CreatePromiseRequest{
 					Id:      "foo",
 					Timeout: 1,
+					Tags:    map[string]string{"resonate:invoke": "baz"},
 				},
 				Task: &t_api.CreateTaskRequest{
 					PromiseId: "foo",
 					ProcessId: "bar",
 					Ttl:       2,
 					Timeout:   1,
-					Recv:      []byte(`"baz"`),
 				},
 			},
 		},
@@ -723,8 +723,8 @@ var TestCases = []*testCase{
 					"Request-Id": "CreatePromiseAndTask",
 				},
 				Body: []byte(`{
-					"promise": {"id": "foo", "timeout": 1},
-					"task": {"processId": "bar", "ttl": 2, "recv": "baz"}
+					"promise": {"id": "foo", "timeout": 1, "tags": {"resonate:invoke": "baz"}},
+					"task": {"processId": "bar", "ttl": 2}
 				}`),
 			},
 			Res: &httpTestCaseResponse{
@@ -737,11 +737,11 @@ var TestCases = []*testCase{
 					Id:        "foo",
 					Timeout:   1,
 					RequestId: "CreatePromiseAndTask",
+					Tags:      map[string]string{"resonate:invoke": "baz"},
 				},
 				Task: &pb.CreatePromiseTaskRequest{
 					ProcessId: "bar",
 					Ttl:       2,
-					Recv:      &pb.Recv{Recv: &pb.Recv_Logical{Logical: "baz"}},
 				},
 			},
 			Res: &pb.CreatePromiseAndTaskResponse{
diff --git a/internal/kernel/t_api/request.go b/internal/kernel/t_api/request.go
index 8e8ef872..1315ab5a 100644
--- a/internal/kernel/t_api/request.go
+++ b/internal/kernel/t_api/request.go
@@ -14,11 +14,11 @@ type Request struct {
 	Tags map[string]string
 
 	// PROMISES
-	ReadPromise              *ReadPromiseRequest
-	SearchPromises           *SearchPromisesRequest
-	CreatePromise            *CreatePromiseRequest
-	CreatePromiseAndTask     *CreatePromiseAndTaskRequest
-	CompletePromise          *CompletePromiseRequest
+	ReadPromise          *ReadPromiseRequest
+	SearchPromises       *SearchPromisesRequest
+	CreatePromise        *CreatePromiseRequest
+	CreatePromiseAndTask *CreatePromiseAndTaskRequest
+	CompletePromise      *CompletePromiseRequest
 
 	// CALLBACKS
 	CreateCallback *CreateCallbackRequest
@@ -179,7 +179,13 @@ type AcquireLockRequest struct {
 }
 
 func (r *AcquireLockRequest) String() string {
-	return fmt.Sprintf("AcquireLock(resourceId=%s, executionId=%s, processId=%s, ttl=%d)", r.ResourceId, r.ExecutionId, r.ProcessId, r.Ttl)
+	return fmt.Sprintf(
+		"AcquireLock(resourceId=%s, executionId=%s, processId=%s, ttl=%d)",
+		r.ResourceId,
+		r.ExecutionId,
+		r.ProcessId,
+		r.Ttl,
+	)
 }
 
 type ReleaseLockRequest struct {
@@ -202,15 +208,20 @@ func (r *HeartbeatLocksRequest) String() string {
 // Tasks
 
 type CreateTaskRequest struct {
-	PromiseId string          `json:"promiseId"`
-	ProcessId string          `json:"processId"`
-	Ttl       int             `json:"ttl"`
-	Timeout   int64           `json:"timeout"`
-	Recv      json.RawMessage `json:"recv"`
+	PromiseId string `json:"promiseId"`
+	ProcessId string `json:"processId"`
+	Ttl       int    `json:"ttl"`
+	Timeout   int64  `json:"timeout"`
 }
 
 func (r *CreateTaskRequest) String() string {
-	return fmt.Sprintf("CreateTask(promiseId=%s, processId=%s, ttl=%d, timeout=%d, recv=%s)", r.PromiseId, r.ProcessId, r.Ttl, r.Timeout, r.Recv)
+	return fmt.Sprintf(
+		"CreateTask(promiseId=%s, processId=%s, ttl=%d, timeout=%d)",
+		r.PromiseId,
+		r.ProcessId,
+		r.Ttl,
+		r.Timeout,
+	)
 }
 
 type ClaimTaskRequest struct {
diff --git a/internal/kernel/t_api/status.go b/internal/kernel/t_api/status.go
index f934299a..ecee67be 100644
--- a/internal/kernel/t_api/status.go
+++ b/internal/kernel/t_api/status.go
@@ -27,6 +27,7 @@ const (
 	StatusScheduleNotFound       StatusCode = 4041
 	StatusLockNotFound           StatusCode = 4042
 	StatusTaskNotFound           StatusCode = 4043
+	StatusPromiseRecvNotFound    StatusCode = 4044
 	StatusPromiseAlreadyExists   StatusCode = 4090
 	StatusScheduleAlreadyExists  StatusCode = 4091
 
diff --git a/pkg/idempotency/idempotency.go b/pkg/idempotency/idempotency.go
index a5d1f6d9..b2e19cd8 100644
--- a/pkg/idempotency/idempotency.go
+++ b/pkg/idempotency/idempotency.go
@@ -1,5 +1,7 @@
 package idempotency
 
+import "strings"
+
 type Key string
 
 func (i1 *Key) Match(i2 *Key) bool {
@@ -14,3 +16,11 @@ func (i1 *Key) Equals(i2 *Key) bool {
 func (i *Key) String() string {
 	return string(*i)
 }
+
+func (i *Key) Clone() *Key {
+	if i == nil {
+		return nil
+	}
+	k := Key(strings.Clone(i.String()))
+	return &k
+}
diff --git a/test/dst/generator.go b/test/dst/generator.go
index b361e9d7..5a550ace 100644
--- a/test/dst/generator.go
+++ b/test/dst/generator.go
@@ -2,6 +2,7 @@ package dst
 
 import (
 	"fmt"
+	"maps"
 	"math"
 	"math/rand" // nosemgrep
 	"strconv"
@@ -130,7 +131,7 @@ func (g *Generator) GenerateSearchPromises(r *rand.Rand, t int64) *t_api.Request
 
 	id := g.promiseSearch(r)
 	limit := RangeIntn(r, 1, 11)
-	tags := g.tagsSet[r.Intn(len(g.tagsSet))]
+	tags := g.tags(r)
 	states := []promise.State{}
 
 	// states
@@ -162,12 +163,12 @@ func (g *Generator) GenerateSearchPromises(r *rand.Rand, t int64) *t_api.Request
 
 func (g *Generator) GenerateCreatePromise(r *rand.Rand, t int64) *t_api.Request {
 	id := g.promiseId(r)
-	idempotencyKey := g.idemotencyKeySet[r.Intn(len(g.idemotencyKeySet))]
+	idempotencyKey := g.idempotencyKey(r)
 	strict := r.Intn(2) == 0
-	headers := g.headersSet[r.Intn(len(g.headersSet))]
+	headers := g.headers(r)
 	data := g.dataSet[r.Intn(len(g.dataSet))]
 	timeout := RangeInt63n(r, t, t+(g.timeoutTicks*g.timeElapsedPerTick))
-	tags := g.tagsSet[r.Intn(len(g.tagsSet))]
+	tags := g.tags(r)
 
 	return &t_api.Request{
 		Kind: t_api.CreatePromise,
@@ -184,6 +185,11 @@ func (g *Generator) GenerateCreatePromise(r *rand.Rand, t int64) *t_api.Request
 
 func (g *Generator) GenerateCreatePromiseAndTask(r *rand.Rand, t int64) *t_api.Request {
 	req := g.GenerateCreatePromise(r, t)
+	if req.CreatePromise.Tags == nil {
+		req.CreatePromise.Tags = map[string]string{"resonate:invoke": "dst"}
+	} else {
+		req.CreatePromise.Tags["resonate:invoke"] = "dst"
+	}
 
 	return &t_api.Request{
 		Kind: t_api.CreatePromiseAndTask,
@@ -194,7 +200,6 @@ func (g *Generator) GenerateCreatePromiseAndTask(r *rand.Rand, t int64) *t_api.R
 				ProcessId: req.CreatePromise.Id,
 				Ttl:       RangeIntn(r, 1000, 5000),
 				Timeout:   req.CreatePromise.Timeout,
-				Recv:      []byte(`"dst"`),
 			},
 		},
 	}
@@ -202,10 +207,10 @@ func (g *Generator) GenerateCreatePromiseAndTask(r *rand.Rand, t int64) *t_api.R
 
 func (g *Generator) GenerateCompletePromise(r *rand.Rand, t int64) *t_api.Request {
 	id := g.promiseId(r)
-	idempotencyKey := g.idemotencyKeySet[r.Intn(len(g.idemotencyKeySet))]
+	idempotencyKey := g.idempotencyKey(r)
 	strict := r.Intn(2) == 0
 	state := promise.State(math.Exp2(float64(r.Intn(3) + 1)))
-	headers := g.headersSet[r.Intn(len(g.headersSet))]
+	headers := g.headers(r)
 	data := g.dataSet[r.Intn(len(g.dataSet))]
 
 	return &t_api.Request{
@@ -261,7 +266,7 @@ func (g *Generator) GenerateSearchSchedules(r *rand.Rand, t int64) *t_api.Reques
 
 	id := g.scheduleSearch(r)
 	limit := RangeIntn(r, 1, 11)
-	tags := g.tagsSet[r.Intn(len(g.tagsSet))]
+	tags := g.tags(r)
 
 	return &t_api.Request{
 		Kind: t_api.SearchSchedules,
@@ -276,13 +281,13 @@ func (g *Generator) GenerateSearchSchedules(r *rand.Rand, t int64) *t_api.Reques
 func (g *Generator) GenerateCreateSchedule(r *rand.Rand, t int64) *t_api.Request {
 	id := g.scheduleId(r)
 	cron := fmt.Sprintf("%d * * * *", r.Intn(60))
-	tags := g.tagsSet[r.Intn(len(g.tagsSet))]
-	idempotencyKey := g.idemotencyKeySet[r.Intn(len(g.idemotencyKeySet))]
+	tags := g.tags(r)
+	idempotencyKey := g.idempotencyKey(r)
 
 	promiseTimeout := RangeInt63n(r, t, g.ticks*g.timeElapsedPerTick)
-	promiseHeaders := g.headersSet[r.Intn(len(g.headersSet))]
+	promiseHeaders := g.headers(r)
 	promiseData := g.dataSet[r.Intn(len(g.dataSet))]
-	promiseTags := g.tagsSet[r.Intn(len(g.tagsSet))]
+	promiseTags := g.tags(r)
 
 	return &t_api.Request{
 		Kind: t_api.CreateSchedule,
@@ -454,3 +459,18 @@ func (g *Generator) nextTasks(r *rand.Rand, id string, pid string, counter int)
 		}
 	}
 }
+
+func (g *Generator) tags(r *rand.Rand) map[string]string {
+	tags := g.tagsSet[r.Intn(len(g.tagsSet))]
+	return maps.Clone(tags)
+}
+
+func (g *Generator) headers(r *rand.Rand) map[string]string {
+	headers := g.headersSet[r.Intn(len(g.headersSet))]
+	return maps.Clone(headers)
+}
+
+func (g *Generator) idempotencyKey(r *rand.Rand) *idempotency.Key {
+	iKey := g.idemotencyKeySet[r.Intn(len(g.idemotencyKeySet))]
+	return iKey.Clone()
+}