diff --git a/cmd/servicechecker/main.go b/cmd/servicechecker/main.go
index 670873d..4be58c7 100644
--- a/cmd/servicechecker/main.go
+++ b/cmd/servicechecker/main.go
@@ -40,14 +40,18 @@ func main() {
 		l.Fatal(ctx, "failed to open config", err)
 	}
 
+	l.Info(ctx, "scheduler: create")
 	s, err := scheduler.NewScheduler()
 	if err != nil {
 		l.Fatal(ctx, "failed to create scheduler", err)
 	}
+	l.Info(ctx, "scheduler: created")
 
+	l.Info(ctx, "scheduler: try to start")
 	if err = s.Start(); err != nil {
 		l.Fatal(ctx, "failed to start scheduler", err)
 	}
+	l.Info(ctx, "scheduler: starting")
 
 	clients := make(map[string]client.Client)
 	gcli := grpccli.NewClient(
@@ -74,43 +78,48 @@ func main() {
 	gcli.Init()
 	clients["grpc"] = gcli
 
-	for _, svc := range cfg.Services {
-		c, ok := clients[svc.Type]
-		if !ok {
-			l.Error(ctx, fmt.Sprintf("unknown client %s", svc.Type))
-			continue
-		}
-		pdesc, err := pfiles.FindDescriptorByName("card_proto.CardService")
-		if err != nil {
-			l.Error(ctx, "failed to find service "+svc.Name)
-			continue
-		}
+	for _, check := range cfg.Checks {
+		l.Info(ctx, fmt.Sprintf("check %#+v", check))
+		for _, task := range check.Tasks {
+			l.Info(ctx, fmt.Sprintf("task %#+v", task))
+			c, ok := clients[task.Type]
+			if !ok {
+				l.Error(ctx, fmt.Sprintf("unknown client %s", task.Type))
+				continue
+			}
 
-		sdesc, ok := pdesc.(protoreflect.ServiceDescriptor)
-		if !ok {
-			l.Error(ctx, "failed to find service "+svc.Name)
-			continue
-		}
+			pkg, svc, mth := grpcconn.ServiceMethod(task.Endpoint)
+			pdesc, err := pfiles.FindDescriptorByName(protoreflect.FullName(pkg + "." + svc))
+			if err != nil {
+				l.Error(ctx, "failed to find service "+pkg+"."+svc)
+				continue
+			}
 
-		for _, check := range svc.Checks {
-			mdesc := sdesc.Methods().ByName(protoreflect.Name(check.Name))
+			sdesc, ok := pdesc.(protoreflect.ServiceDescriptor)
+			if !ok {
+				l.Error(ctx, "failed to find service "+pkg+"."+svc)
+				continue
+			}
+
+			mdesc := sdesc.Methods().ByName(protoreflect.Name(mth))
 			if mdesc == nil {
-				l.Error(ctx, "failed to find method "+check.Name)
+				l.Error(ctx, "failed to find method "+mth)
 				continue
 			}
 
 			req := dynamicpb.NewMessageType(mdesc.Input()).New()
 			rsp := dynamicpb.NewMessageType(mdesc.Output()).New()
 
-			if err = jsonpbcodec.NewCodec().Unmarshal([]byte(check.Data), req); err != nil {
+			if err = jsonpbcodec.NewCodec().Unmarshal([]byte(task.Data), req); err != nil {
 				l.Error(ctx, "failed to unmarshal", err)
 				continue
 			}
-			labels := []string{"service", svc.Name, "endpoint", check.Name}
+			labels := []string{"check", check.Name, "task", task.Name, "service", svc, "endpoint", mth}
 			m.Counter(semconv.ClientRequestInflight, labels...).Inc()
 			ts := time.Now()
-			err = grpcconn.Call(ctx, l, c, svc.Addr, time.Duration(check.Timeout),
-				c.NewRequest("card_proto", "CardService."+check.Name, req),
+			l.Info(ctx, fmt.Sprintf("try to call %s.%s via %s", svc, mth, task.Addr))
+			err = grpcconn.Call(ctx, l, c, task.Addr, time.Duration(task.Timeout),
+				c.NewRequest(pkg, svc+"."+mth, req),
 				rsp)
 			te := time.Since(ts)
 			m.Summary(semconv.ClientRequestLatencyMicroseconds, labels...).Update(te.Seconds())
@@ -121,6 +130,7 @@ func main() {
 			} else {
 				m.Counter(semconv.ClientRequestTotal, append(labels, "status", "success")...).Inc()
 			}
+
 		}
 	}
 
diff --git a/pkg/config/config.go b/pkg/config/config.go
index 6375259..681c6f7 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -8,26 +8,27 @@ import (
 )
 
 type Config struct {
-	Services []*Service `json:"services,omitempty" yaml:"services,omitempty"`
-}
-
-type Service struct {
-	Name       string   `json:"name,omitempty" yaml:"name,omitempty"`
-	Addr       string   `json:"addr,omitempty" yaml:"addr,omitempty"`
-	Type       string   `json:"type,omitempty" yaml:"type,omitempty"`
-	Reflection bool     `json:"reflection,omitempty" yaml:"reflection,omitempty"`
-	Protoset   string   `json:"protoset,omitempty" yaml:"protoset,omitempty"`
-	Checks     []*Check `json:"checks,omitempty" yaml:"checks,omitempty"`
-	TLSVerify  *bool    `json:"tls_verify,omitempty" yaml:"tls_verify,omitempty"`
+	Checks []*Check `json:"checks,omitempty" yaml:"checks,omitempty"`
 }
 
 type Check struct {
 	Name     string         `json:"name,omitempty" yaml:"name,omitempty"`
-	Data     string         `json:"data,omitempty" yaml:"data,omitempty"`
+	Tasks    []*Task        `json:"tasks,omitempty" yaml:"tasks,omitempty"`
 	Timeout  mtime.Duration `json:"timeout,omitempty" yaml:"timeout,omitempty"`
 	Interval mtime.Duration `json:"interval,omitempty" yaml:"interval,omitempty"`
 }
 
+type Task struct {
+	TLSVerify *bool          `json:"tls_verify,omitempty" yaml:"tls_verify,omitempty"`
+	Endpoint  string         `json:"endpoint,omitempty" yaml:"endpoint,omitempty"`
+	Name      string         `json:"name,omitempty" yaml:"name,omitempty"`
+	Data      string         `json:"data,omitempty" yaml:"data,omitempty"`
+	Addr      string         `json:"addr,omitempty" yaml:"addr,omitempty"`
+	Type      string         `json:"type,omitempty" yaml:"type,omitempty"`
+	Protoset  string         `json:"protoset,omitempty" yaml:"protoset,omitempty"`
+	Timeout   mtime.Duration `json:"timeout,omitempty" yaml:"timeout,omitempty"`
+}
+
 func (cfg *Config) Parse(r io.Reader) error {
 	buf, err := io.ReadAll(r)
 	if err != nil {
diff --git a/pkg/grpcconn/grpcconn.go b/pkg/grpcconn/grpcconn.go
index 2071a57..7865972 100644
--- a/pkg/grpcconn/grpcconn.go
+++ b/pkg/grpcconn/grpcconn.go
@@ -2,6 +2,7 @@ package grpcconn
 
 import (
 	"context"
+	"strings"
 	"time"
 
 	"github.com/google/uuid"
@@ -28,3 +29,9 @@ func Call(ctx context.Context, l logger.Logger, c client.Client, addr string, td
 	}
 	return nil
 }
+
+func ServiceMethod(method string) (string, string, string) {
+	idx1 := strings.LastIndex(method, ".")
+	idx2 := strings.Index(method[:idx1], ".")
+	return method[:idx2], method[idx2+1 : idx1], method[idx1+1:]
+}