diff --git a/pkg/client/accounting.go b/pkg/client/accounting.go
index e9db7f1..a6028e4 100644
--- a/pkg/client/accounting.go
+++ b/pkg/client/accounting.go
@@ -5,54 +5,29 @@ import (
 
 	"github.com/nspcc-dev/neofs-api-go/pkg/accounting"
 	"github.com/nspcc-dev/neofs-api-go/pkg/owner"
+	"github.com/nspcc-dev/neofs-api-go/rpc/client"
 	v2accounting "github.com/nspcc-dev/neofs-api-go/v2/accounting"
-	"github.com/nspcc-dev/neofs-api-go/v2/client"
+	rpcapi "github.com/nspcc-dev/neofs-api-go/v2/rpc"
 	v2signature "github.com/nspcc-dev/neofs-api-go/v2/signature"
 	"github.com/pkg/errors"
 )
 
 // Accounting contains methods related to balance querying.
 type Accounting interface {
-	// GetSelfBalance returns balance of the account deduced from client's key.
-	GetSelfBalance(context.Context, ...CallOption) (*accounting.Decimal, error)
 	// GetBalance returns balance of provided account.
 	GetBalance(context.Context, *owner.ID, ...CallOption) (*accounting.Decimal, error)
 }
 
-func (c clientImpl) GetSelfBalance(ctx context.Context, opts ...CallOption) (*accounting.Decimal, error) {
-	return c.GetBalance(ctx, nil, opts...)
-}
-
-func (c clientImpl) GetBalance(ctx context.Context, owner *owner.ID, opts ...CallOption) (*accounting.Decimal, error) {
-	// check remote node version
-	switch c.remoteNode.Version.Major() {
-	case 2:
-		return c.getBalanceV2(ctx, owner, opts...)
-	default:
-		return nil, errUnsupportedProtocol
-	}
-}
-
-func (c clientImpl) getBalanceV2(ctx context.Context, ownerID *owner.ID, opts ...CallOption) (*accounting.Decimal, error) {
+func (c *clientImpl) GetBalance(ctx context.Context, owner *owner.ID, opts ...CallOption) (*accounting.Decimal, error) {
 	// apply all available options
 	callOptions := c.defaultCallOptions()
 
 	for i := range opts {
-		opts[i].apply(&callOptions)
-	}
-
-	if ownerID == nil {
-		w, err := owner.NEO3WalletFromPublicKey(&callOptions.key.PublicKey)
-		if err != nil {
-			return nil, err
-		}
-
-		ownerID = new(owner.ID)
-		ownerID.SetNeo3Wallet(w)
+		opts[i](callOptions)
 	}
 
 	reqBody := new(v2accounting.BalanceRequestBody)
-	reqBody.SetOwnerID(ownerID.ToV2())
+	reqBody.SetOwnerID(owner.ToV2())
 
 	req := new(v2accounting.BalanceRequest)
 	req.SetBody(reqBody)
@@ -63,56 +38,15 @@ func (c clientImpl) getBalanceV2(ctx context.Context, ownerID *owner.ID, opts ..
 		return nil, err
 	}
 
-	switch c.remoteNode.Protocol {
-	case GRPC:
-		cli, err := v2AccountingClientFromOptions(c.opts)
-		if err != nil {
-			return nil, errors.Wrap(err, "can't create grpc client")
-		}
-
-		resp, err := cli.Balance(ctx, req)
-		if err != nil {
-			return nil, errors.Wrap(err, "transport error")
-		}
-
-		err = v2signature.VerifyServiceMessage(resp)
-		if err != nil {
-			return nil, errors.Wrap(err, "can't verify response message")
-		}
-
-		return accounting.NewDecimalFromV2(resp.GetBody().GetBalance()), nil
-	default:
-		return nil, errUnsupportedProtocol
-	}
-}
-
-func v2AccountingClientFromOptions(opts *clientOptions) (cli *v2accounting.Client, err error) {
-	switch {
-	case opts.grpcOpts.v2AccountingClient != nil:
-		// return value from client cache
-		return opts.grpcOpts.v2AccountingClient, nil
-
-	case opts.grpcOpts.conn != nil:
-		cli, err = v2accounting.NewClient(v2accounting.WithGlobalOpts(
-			client.WithGRPCConn(opts.grpcOpts.conn)),
-		)
-
-	case opts.addr != "":
-		cli, err = v2accounting.NewClient(v2accounting.WithGlobalOpts(
-			client.WithNetworkAddress(opts.addr),
-			client.WithDialTimeout(opts.dialTimeout),
-		))
-
-	default:
-		return nil, errOptionsLack("Accounting")
-	}
-
-	// check if client correct and save in cache
+	resp, err := rpcapi.Balance(c.Raw(), req, client.WithContext(ctx))
 	if err != nil {
-		return nil, err
+		return nil, errors.Wrap(err, "transport error")
 	}
 
-	opts.grpcOpts.v2AccountingClient = cli
+	err = v2signature.VerifyServiceMessage(resp)
+	if err != nil {
+		return nil, errors.Wrap(err, "can't verify response message")
+	}
 
-	return cli, nil
+	return accounting.NewDecimalFromV2(resp.GetBody().GetBalance()), nil
 }
diff --git a/pkg/client/client.go b/pkg/client/client.go
index 42bd454..99d1e59 100644
--- a/pkg/client/client.go
+++ b/pkg/client/client.go
@@ -1,64 +1,37 @@
 package client
 
 import (
-	"crypto/ecdsa"
-	"errors"
+	"sync"
 
-	"github.com/nspcc-dev/neofs-api-go/pkg"
-	"github.com/nspcc-dev/neofs-api-go/pkg/token"
+	"github.com/nspcc-dev/neofs-api-go/rpc/client"
 )
 
-type (
-	// Client represents NeoFS client.
-	Client interface {
-		Accounting
-		Container
-		Netmap
-		Object
-		Session
-	}
+// Client represents NeoFS client.
+type Client interface {
+	Accounting
+	Container
+	Netmap
+	Object
+	Session
+}
 
-	clientImpl struct {
-		key        *ecdsa.PrivateKey
-		remoteNode TransportInfo
+type clientImpl struct {
+	onceInit sync.Once
 
-		opts *clientOptions
+	raw *client.Client
 
-		sessionToken *token.SessionToken
+	opts *clientOptions
+}
 
-		bearerToken *token.BearerToken
-	}
-
-	TransportProtocol uint32
-
-	TransportInfo struct {
-		Version  *pkg.Version
-		Protocol TransportProtocol
-	}
-)
-
-const (
-	Unknown TransportProtocol = iota
-	GRPC
-)
-
-var errUnsupportedProtocol = errors.New("unsupported transport protocol")
-
-// New returns new client which uses key as default signing key.
-func New(key *ecdsa.PrivateKey, opts ...Option) (Client, error) {
+func New(opts ...Option) (Client, error) {
 	clientOptions := defaultClientOptions()
 
 	for i := range opts {
-		opts[i].apply(clientOptions)
+		opts[i](clientOptions)
 	}
 
-	// todo: make handshake to check latest version
 	return &clientImpl{
-		key: key,
-		remoteNode: TransportInfo{
-			Version:  pkg.SDKVersion(),
-			Protocol: GRPC,
-		},
+		raw:  client.New(),
 		opts: clientOptions,
 	}, nil
 }
diff --git a/pkg/client/client_test.go b/pkg/client/client_test.go
deleted file mode 100644
index cb36606..0000000
--- a/pkg/client/client_test.go
+++ /dev/null
@@ -1,67 +0,0 @@
-package client_test
-
-import (
-	"context"
-	"fmt"
-	"testing"
-	"time"
-
-	"github.com/nspcc-dev/neofs-api-go/pkg/client"
-	"github.com/nspcc-dev/neofs-api-go/pkg/container"
-	"github.com/nspcc-dev/neofs-api-go/pkg/netmap"
-	"github.com/nspcc-dev/neofs-crypto/test"
-	"github.com/stretchr/testify/require"
-	"google.golang.org/grpc"
-)
-
-func TestExample(t *testing.T) {
-	t.Skip()
-	target := "s01.localtest.nspcc.ru:50501"
-	key := test.DecodeKey(-1)
-
-	// create client from address
-	cli, err := client.New(key, client.WithAddress(target))
-	require.NoError(t, err)
-
-	// ask for balance
-	resp, err := cli.GetSelfBalance(context.Background())
-	require.NoError(t, err)
-
-	fmt.Println(resp.Value(), resp.Precision())
-
-	// create client from grpc connection
-	conn, err := grpc.DialContext(context.Background(), target, grpc.WithBlock(), grpc.WithInsecure())
-	require.NoError(t, err)
-
-	cli, err = client.New(key, client.WithGRPCConnection(conn))
-	require.NoError(t, err)
-
-	replica := new(netmap.Replica)
-	replica.SetCount(2)
-	replica.SetSelector("*")
-
-	policy := new(netmap.PlacementPolicy)
-	policy.SetContainerBackupFactor(2)
-	policy.SetReplicas(replica)
-
-	// this container has random nonce and it does not set owner id
-	cnr := container.New(
-		container.WithAttribute("CreatedAt", time.Now().String()),
-		container.WithPolicy(policy),
-		container.WithReadOnlyBasicACL(),
-	)
-	require.NoError(t, err)
-
-	// here container will have owner id from client key, and it will be signed
-	containerID, err := cli.PutContainer(context.Background(), cnr, client.WithTTL(10))
-	require.NoError(t, err)
-
-	fmt.Println(containerID)
-
-	list, err := cli.ListSelfContainers(context.Background())
-	require.NoError(t, err)
-
-	for i := range list {
-		fmt.Println("found container:", list[i])
-	}
-}
diff --git a/pkg/client/container.go b/pkg/client/container.go
index 1328028..757fb46 100644
--- a/pkg/client/container.go
+++ b/pkg/client/container.go
@@ -7,10 +7,11 @@ import (
 	"github.com/nspcc-dev/neofs-api-go/pkg/acl/eacl"
 	"github.com/nspcc-dev/neofs-api-go/pkg/container"
 	"github.com/nspcc-dev/neofs-api-go/pkg/owner"
+	"github.com/nspcc-dev/neofs-api-go/rpc/client"
 	"github.com/nspcc-dev/neofs-api-go/util/signature"
-	"github.com/nspcc-dev/neofs-api-go/v2/client"
 	v2container "github.com/nspcc-dev/neofs-api-go/v2/container"
 	"github.com/nspcc-dev/neofs-api-go/v2/refs"
+	rpcapi "github.com/nspcc-dev/neofs-api-go/v2/rpc"
 	v2signature "github.com/nspcc-dev/neofs-api-go/v2/signature"
 	"github.com/pkg/errors"
 )
@@ -23,14 +24,10 @@ type Container interface {
 	GetContainer(context.Context, *container.ID, ...CallOption) (*container.Container, error)
 	// ListContainers return container list with the provided owner.
 	ListContainers(context.Context, *owner.ID, ...CallOption) ([]*container.ID, error)
-	// ListSelfContainers is similar to ListContainers but uses client's key to deduce owner ID.
-	ListSelfContainers(context.Context, ...CallOption) ([]*container.ID, error)
 	// DeleteContainer removes container from NeoFS network.
 	DeleteContainer(context.Context, *container.ID, ...CallOption) error
 	// GetEACL returns extended ACL for a given container.
-	GetEACL(context.Context, *container.ID, ...CallOption) (*eacl.Table, error)
-	// GetEACLWithSignature is similar to GetEACL but returns signed ACL.
-	GetEACLWithSignature(context.Context, *container.ID, ...CallOption) (*EACLWithSignature, error)
+	GetEACL(context.Context, *container.ID, ...CallOption) (*EACLWithSignature, error)
 	// SetEACL sets extended ACL.
 	SetEACL(context.Context, *eacl.Table, ...CallOption) error
 	// AnnounceContainerUsedSpace announces amount of space which is taken by stored objects.
@@ -48,8 +45,6 @@ type EACLWithSignature struct {
 	sig *pkg.Signature
 }
 
-var errNilReponseBody = errors.New("response body is nil")
-
 func (c delContainerSignWrapper) ReadSignedData(bytes []byte) ([]byte, error) {
 	return c.body.GetContainerID().GetValue(), nil
 }
@@ -68,129 +63,16 @@ func (e EACLWithSignature) Signature() *pkg.Signature {
 	return e.sig
 }
 
-func (c clientImpl) PutContainer(ctx context.Context, cnr *container.Container, opts ...CallOption) (*container.ID, error) {
-	switch c.remoteNode.Version.Major() {
-	case 2:
-		return c.putContainerV2(ctx, cnr, opts...)
-	default:
-		return nil, errUnsupportedProtocol
-	}
-}
-
-// GetContainer receives container structure through NeoFS API call.
-//
-// Returns error if container structure is received but does not meet NeoFS API specification.
-func (c clientImpl) GetContainer(ctx context.Context, id *container.ID, opts ...CallOption) (*container.Container, error) {
-	switch c.remoteNode.Version.Major() {
-	case 2:
-		return c.getContainerV2(ctx, id, opts...)
-	default:
-		return nil, errUnsupportedProtocol
-	}
-}
-
-// GetVerifiedContainerStructure is a wrapper over Client.GetContainer method
-// which checks if the structure of the resulting container matches its identifier.
-//
-// Returns container.ErrIDMismatch if container does not match the identifier.
-func GetVerifiedContainerStructure(ctx context.Context, c Client, id *container.ID, opts ...CallOption) (*container.Container, error) {
-	cnr, err := c.GetContainer(ctx, id, opts...)
-	if err != nil {
-		return nil, err
-	}
-
-	if !container.CalculateID(cnr).Equal(id) {
-		return nil, container.ErrIDMismatch
-	}
-
-	return cnr, nil
-}
-
-func (c clientImpl) ListContainers(ctx context.Context, owner *owner.ID, opts ...CallOption) ([]*container.ID, error) {
-	switch c.remoteNode.Version.Major() {
-	case 2:
-		return c.listContainerV2(ctx, owner, opts...)
-	default:
-		return nil, errUnsupportedProtocol
-	}
-}
-
-func (c clientImpl) ListSelfContainers(ctx context.Context, opts ...CallOption) ([]*container.ID, error) {
-	return c.ListContainers(ctx, nil, opts...)
-}
-
-func (c clientImpl) DeleteContainer(ctx context.Context, id *container.ID, opts ...CallOption) error {
-	switch c.remoteNode.Version.Major() {
-	case 2:
-		return c.delContainerV2(ctx, id, opts...)
-	default:
-		return errUnsupportedProtocol
-	}
-}
-
-func (c clientImpl) GetEACL(ctx context.Context, id *container.ID, opts ...CallOption) (*eacl.Table, error) {
-	v, err := c.getEACL(ctx, id, true, opts...)
-	if err != nil {
-		return nil, err
-	}
-
-	return v.table, nil
-}
-
-func (c clientImpl) GetEACLWithSignature(ctx context.Context, id *container.ID, opts ...CallOption) (*EACLWithSignature, error) {
-	return c.getEACL(ctx, id, false, opts...)
-}
-
-func (c clientImpl) getEACL(ctx context.Context, id *container.ID, verify bool, opts ...CallOption) (*EACLWithSignature, error) {
-	switch c.remoteNode.Version.Major() {
-	case 2:
-		resp, err := c.getEACLV2(ctx, id, verify, opts...)
-		if err != nil {
-			return nil, err
-		}
-
-		return &EACLWithSignature{
-			table: eacl.NewTableFromV2(resp.GetEACL()),
-			sig:   pkg.NewSignatureFromV2(resp.GetSignature()),
-		}, nil
-	default:
-		return nil, errUnsupportedProtocol
-	}
-}
-
-func (c clientImpl) SetEACL(ctx context.Context, eacl *eacl.Table, opts ...CallOption) error {
-	switch c.remoteNode.Version.Major() {
-	case 2:
-		return c.setEACLV2(ctx, eacl, opts...)
-	default:
-		return errUnsupportedProtocol
-	}
-}
-
-// AnnounceContainerUsedSpace used by storage nodes to estimate their container
-// sizes during lifetime. Use it only in storage node applications.
-func (c clientImpl) AnnounceContainerUsedSpace(
-	ctx context.Context,
-	announce []container.UsedSpaceAnnouncement,
-	opts ...CallOption) error {
-	switch c.remoteNode.Version.Major() {
-	case 2:
-		return c.announceContainerUsedSpaceV2(ctx, announce, opts...)
-	default:
-		return errUnsupportedProtocol
-	}
-}
-
-func (c clientImpl) putContainerV2(ctx context.Context, cnr *container.Container, opts ...CallOption) (*container.ID, error) {
+func (c *clientImpl) PutContainer(ctx context.Context, cnr *container.Container, opts ...CallOption) (*container.ID, error) {
 	// apply all available options
 	callOptions := c.defaultCallOptions()
 
 	for i := range opts {
-		opts[i].apply(&callOptions)
+		opts[i](callOptions)
 	}
 
 	// set transport version
-	cnr.SetVersion(c.remoteNode.Version)
+	cnr.SetVersion(pkg.SDKVersion())
 
 	// if container owner is not set, then use client key as owner
 	if cnr.OwnerID() == nil {
@@ -230,35 +112,28 @@ func (c clientImpl) putContainerV2(ctx context.Context, cnr *container.Container
 		return nil, err
 	}
 
-	switch c.remoteNode.Protocol {
-	case GRPC:
-		cli, err := v2ContainerClientFromOptions(c.opts)
-		if err != nil {
-			return nil, errors.Wrap(err, "can't create grpc client")
-		}
-
-		resp, err := cli.Put(ctx, req)
-		if err != nil {
-			return nil, errors.Wrap(err, "transport error")
-		}
-
-		err = v2signature.VerifyServiceMessage(resp)
-		if err != nil {
-			return nil, errors.Wrap(err, "can't verify response message")
-		}
-
-		return container.NewIDFromV2(resp.GetBody().GetContainerID()), nil
-	default:
-		return nil, errUnsupportedProtocol
+	resp, err := rpcapi.PutContainer(c.Raw(), req, client.WithContext(ctx))
+	if err != nil {
+		return nil, err
 	}
+
+	err = v2signature.VerifyServiceMessage(resp)
+	if err != nil {
+		return nil, errors.Wrap(err, "can't verify response message")
+	}
+
+	return container.NewIDFromV2(resp.GetBody().GetContainerID()), nil
 }
 
-func (c clientImpl) getContainerV2(ctx context.Context, id *container.ID, opts ...CallOption) (*container.Container, error) {
+// GetContainer receives container structure through NeoFS API call.
+//
+// Returns error if container structure is received but does not meet NeoFS API specification.
+func (c *clientImpl) GetContainer(ctx context.Context, id *container.ID, opts ...CallOption) (*container.Container, error) {
 	// apply all available options
 	callOptions := c.defaultCallOptions()
 
 	for i := range opts {
-		opts[i].apply(&callOptions)
+		opts[i](callOptions)
 	}
 
 	reqBody := new(v2container.GetRequestBody)
@@ -273,35 +148,42 @@ func (c clientImpl) getContainerV2(ctx context.Context, id *container.ID, opts .
 		return nil, err
 	}
 
-	switch c.remoteNode.Protocol {
-	case GRPC:
-		cli, err := v2ContainerClientFromOptions(c.opts)
-		if err != nil {
-			return nil, errors.Wrap(err, "can't create grpc client")
-		}
-
-		resp, err := cli.Get(ctx, req)
-		if err != nil {
-			return nil, errors.Wrap(err, "transport error")
-		}
-
-		err = v2signature.VerifyServiceMessage(resp)
-		if err != nil {
-			return nil, errors.Wrap(err, "can't verify response message")
-		}
-
-		return container.NewVerifiedFromV2(resp.GetBody().GetContainer())
-	default:
-		return nil, errUnsupportedProtocol
+	resp, err := rpcapi.GetContainer(c.Raw(), req, client.WithContext(ctx))
+	if err != nil {
+		return nil, errors.Wrap(err, "transport error")
 	}
+
+	err = v2signature.VerifyServiceMessage(resp)
+	if err != nil {
+		return nil, errors.Wrap(err, "can't verify response message")
+	}
+
+	return container.NewVerifiedFromV2(resp.GetBody().GetContainer())
 }
 
-func (c clientImpl) listContainerV2(ctx context.Context, ownerID *owner.ID, opts ...CallOption) ([]*container.ID, error) {
+// GetVerifiedContainerStructure is a wrapper over Client.GetContainer method
+// which checks if the structure of the resulting container matches its identifier.
+//
+// Returns container.ErrIDMismatch if container does not match the identifier.
+func GetVerifiedContainerStructure(ctx context.Context, c Client, id *container.ID, opts ...CallOption) (*container.Container, error) {
+	cnr, err := c.GetContainer(ctx, id, opts...)
+	if err != nil {
+		return nil, err
+	}
+
+	if !container.CalculateID(cnr).Equal(id) {
+		return nil, container.ErrIDMismatch
+	}
+
+	return cnr, nil
+}
+
+func (c *clientImpl) ListContainers(ctx context.Context, ownerID *owner.ID, opts ...CallOption) ([]*container.ID, error) {
 	// apply all available options
 	callOptions := c.defaultCallOptions()
 
 	for i := range opts {
-		opts[i].apply(&callOptions)
+		opts[i](callOptions)
 	}
 
 	if ownerID == nil {
@@ -326,40 +208,31 @@ func (c clientImpl) listContainerV2(ctx context.Context, ownerID *owner.ID, opts
 		return nil, err
 	}
 
-	switch c.remoteNode.Protocol {
-	case GRPC:
-		cli, err := v2ContainerClientFromOptions(c.opts)
-		if err != nil {
-			return nil, errors.Wrap(err, "can't create grpc client")
-		}
-
-		resp, err := cli.List(ctx, req)
-		if err != nil {
-			return nil, errors.Wrap(err, "transport error")
-		}
-
-		err = v2signature.VerifyServiceMessage(resp)
-		if err != nil {
-			return nil, errors.Wrap(err, "can't verify response message")
-		}
-
-		result := make([]*container.ID, 0, len(resp.GetBody().GetContainerIDs()))
-		for _, cidV2 := range resp.GetBody().GetContainerIDs() {
-			result = append(result, container.NewIDFromV2(cidV2))
-		}
-
-		return result, nil
-	default:
-		return nil, errUnsupportedProtocol
+	resp, err := rpcapi.ListContainers(c.Raw(), req, client.WithContext(ctx))
+	if err != nil {
+		return nil, errors.Wrap(err, "transport error")
 	}
+
+	err = v2signature.VerifyServiceMessage(resp)
+	if err != nil {
+		return nil, errors.Wrap(err, "can't verify response message")
+	}
+
+	result := make([]*container.ID, 0, len(resp.GetBody().GetContainerIDs()))
+	for _, cidV2 := range resp.GetBody().GetContainerIDs() {
+		result = append(result, container.NewIDFromV2(cidV2))
+	}
+
+	return result, nil
+
 }
 
-func (c clientImpl) delContainerV2(ctx context.Context, id *container.ID, opts ...CallOption) error {
+func (c *clientImpl) DeleteContainer(ctx context.Context, id *container.ID, opts ...CallOption) error {
 	// apply all available options
 	callOptions := c.defaultCallOptions()
 
 	for i := range opts {
-		opts[i].apply(&callOptions)
+		opts[i](callOptions)
 	}
 
 	reqBody := new(v2container.DeleteRequestBody)
@@ -390,35 +263,20 @@ func (c clientImpl) delContainerV2(ctx context.Context, id *container.ID, opts .
 		return err
 	}
 
-	switch c.remoteNode.Protocol {
-	case GRPC:
-		cli, err := v2ContainerClientFromOptions(c.opts)
-		if err != nil {
-			return errors.Wrap(err, "can't create grpc client")
-		}
-
-		resp, err := cli.Delete(ctx, req)
-		if err != nil {
-			return errors.Wrap(err, "transport error")
-		}
-
-		err = v2signature.VerifyServiceMessage(resp)
-		if err != nil {
-			return errors.Wrap(err, "can't verify response message")
-		}
-
-		return nil
-	default:
-		return errUnsupportedProtocol
+	resp, err := rpcapi.DeleteContainer(c.Raw(), req, client.WithContext(ctx))
+	if err != nil {
+		return errors.Wrap(err, "transport error")
 	}
+
+	return errors.Wrap(v2signature.VerifyServiceMessage(resp), "can't verify response message")
 }
 
-func (c clientImpl) getEACLV2(ctx context.Context, id *container.ID, verify bool, opts ...CallOption) (*v2container.GetExtendedACLResponseBody, error) {
+func (c *clientImpl) GetEACL(ctx context.Context, id *container.ID, opts ...CallOption) (*EACLWithSignature, error) {
 	// apply all available options
 	callOptions := c.defaultCallOptions()
 
 	for i := range opts {
-		opts[i].apply(&callOptions)
+		opts[i](callOptions)
 	}
 
 	reqBody := new(v2container.GetExtendedACLRequestBody)
@@ -433,61 +291,35 @@ func (c clientImpl) getEACLV2(ctx context.Context, id *container.ID, verify bool
 		return nil, err
 	}
 
-	switch c.remoteNode.Protocol {
-	case GRPC:
-		cli, err := v2ContainerClientFromOptions(c.opts)
-		if err != nil {
-			return nil, errors.Wrap(err, "can't create grpc client")
-		}
-
-		resp, err := cli.GetExtendedACL(ctx, req)
-		if err != nil {
-			return nil, errors.Wrap(err, "transport error")
-		}
-
-		err = v2signature.VerifyServiceMessage(resp)
-		if err != nil {
-			return nil, errors.Wrap(err, "can't verify response message")
-		}
-
-		body := resp.GetBody()
-		if body == nil {
-			return nil, errNilReponseBody
-		}
-
-		if verify {
-			if err := signature.VerifyDataWithSource(
-				v2signature.StableMarshalerWrapper{
-					SM: body.GetEACL(),
-				},
-				func() (key, sig []byte) {
-					s := body.GetSignature()
-
-					return s.GetKey(), s.GetSign()
-				},
-				signature.SignWithRFC6979(),
-			); err != nil {
-				return nil, errors.Wrap(err, "incorrect signature")
-			}
-		}
-
-		return body, nil
-	default:
-		return nil, errUnsupportedProtocol
+	resp, err := rpcapi.GetEACL(c.Raw(), req, client.WithContext(ctx))
+	if err != nil {
+		return nil, errors.Wrap(err, "transport error")
 	}
+
+	err = v2signature.VerifyServiceMessage(resp)
+	if err != nil {
+		return nil, errors.Wrap(err, "can't verify response message")
+	}
+
+	body := resp.GetBody()
+
+	return &EACLWithSignature{
+		table: eacl.NewTableFromV2(body.GetEACL()),
+		sig:   pkg.NewSignatureFromV2(body.GetSignature()),
+	}, nil
 }
 
-func (c clientImpl) setEACLV2(ctx context.Context, eacl *eacl.Table, opts ...CallOption) error {
+func (c *clientImpl) SetEACL(ctx context.Context, eacl *eacl.Table, opts ...CallOption) error {
 	// apply all available options
 	callOptions := c.defaultCallOptions()
 
 	for i := range opts {
-		opts[i].apply(&callOptions)
+		opts[i](callOptions)
 	}
 
 	reqBody := new(v2container.SetExtendedACLRequestBody)
 	reqBody.SetEACL(eacl.ToV2())
-	reqBody.GetEACL().SetVersion(c.remoteNode.Version.ToV2())
+	reqBody.GetEACL().SetVersion(pkg.SDKVersion().ToV2())
 
 	signWrapper := v2signature.StableMarshalerWrapper{SM: reqBody.GetEACL()}
 
@@ -510,37 +342,29 @@ func (c clientImpl) setEACLV2(ctx context.Context, eacl *eacl.Table, opts ...Cal
 		return err
 	}
 
-	switch c.remoteNode.Protocol {
-	case GRPC:
-		cli, err := v2ContainerClientFromOptions(c.opts)
-		if err != nil {
-			return errors.Wrap(err, "can't create grpc client")
-		}
-
-		resp, err := cli.SetExtendedACL(ctx, req)
-		if err != nil {
-			return errors.Wrap(err, "transport error")
-		}
-
-		err = v2signature.VerifyServiceMessage(resp)
-		if err != nil {
-			return errors.Wrap(err, "can't verify response message")
-		}
-
-		return nil
-	default:
-		return errUnsupportedProtocol
+	resp, err := rpcapi.SetEACL(c.Raw(), req, client.WithContext(ctx))
+	if err != nil {
+		return errors.Wrap(err, "transport error")
 	}
+
+	err = v2signature.VerifyServiceMessage(resp)
+	if err != nil {
+		return errors.Wrap(err, "can't verify response message")
+	}
+
+	return nil
 }
 
-func (c clientImpl) announceContainerUsedSpaceV2(
+// AnnounceContainerUsedSpace used by storage nodes to estimate their container
+// sizes during lifetime. Use it only in storage node applications.
+func (c *clientImpl) AnnounceContainerUsedSpace(
 	ctx context.Context,
 	announce []container.UsedSpaceAnnouncement,
 	opts ...CallOption) error {
 	callOptions := c.defaultCallOptions() // apply all available options
 
 	for i := range opts {
-		opts[i].apply(&callOptions)
+		opts[i](callOptions)
 	}
 
 	// convert list of SDK announcement structures into NeoFS-API v2 list
@@ -563,57 +387,15 @@ func (c clientImpl) announceContainerUsedSpaceV2(
 		return err
 	}
 
-	// choose underline transport protocol and send message over it
-	switch c.remoteNode.Protocol {
-	case GRPC:
-		cli, err := v2ContainerClientFromOptions(c.opts)
-		if err != nil {
-			return errors.Wrap(err, "can't create grpc client")
-		}
-
-		resp, err := cli.AnnounceUsedSpace(ctx, req)
-		if err != nil {
-			return errors.Wrap(err, "transport error")
-		}
-
-		err = v2signature.VerifyServiceMessage(resp)
-		if err != nil {
-			return errors.Wrap(err, "can't verify response message")
-		}
-
-		return nil
-	default:
-		return errUnsupportedProtocol
-	}
-}
-
-func v2ContainerClientFromOptions(opts *clientOptions) (cli *v2container.Client, err error) {
-	switch {
-	case opts.grpcOpts.v2ContainerClient != nil:
-		// return value from client cache
-		return opts.grpcOpts.v2ContainerClient, nil
-
-	case opts.grpcOpts.conn != nil:
-		cli, err = v2container.NewClient(v2container.WithGlobalOpts(
-			client.WithGRPCConn(opts.grpcOpts.conn)),
-		)
-
-	case opts.addr != "":
-		cli, err = v2container.NewClient(v2container.WithGlobalOpts(
-			client.WithNetworkAddress(opts.addr),
-			client.WithDialTimeout(opts.dialTimeout),
-		))
-
-	default:
-		return nil, errOptionsLack("Container")
-	}
-
-	// check if client correct and save in cache
+	resp, err := rpcapi.AnnounceUsedSpace(c.Raw(), req, client.WithContext(ctx))
 	if err != nil {
-		return nil, err
+		return errors.Wrap(err, "transport error")
 	}
 
-	opts.grpcOpts.v2ContainerClient = cli
+	err = v2signature.VerifyServiceMessage(resp)
+	if err != nil {
+		return errors.Wrap(err, "can't verify response message")
+	}
 
-	return cli, nil
+	return nil
 }
diff --git a/pkg/client/netmap.go b/pkg/client/netmap.go
index b3f8966..057b0c3 100644
--- a/pkg/client/netmap.go
+++ b/pkg/client/netmap.go
@@ -3,9 +3,11 @@ package client
 import (
 	"context"
 
+	"github.com/nspcc-dev/neofs-api-go/pkg"
 	"github.com/nspcc-dev/neofs-api-go/pkg/netmap"
-	"github.com/nspcc-dev/neofs-api-go/v2/client"
+	"github.com/nspcc-dev/neofs-api-go/rpc/client"
 	v2netmap "github.com/nspcc-dev/neofs-api-go/v2/netmap"
+	rpcapi "github.com/nspcc-dev/neofs-api-go/v2/rpc"
 	v2signature "github.com/nspcc-dev/neofs-api-go/v2/signature"
 	"github.com/pkg/errors"
 )
@@ -15,51 +17,37 @@ type Netmap interface {
 	// EndpointInfo returns attributes, address and public key of the node, specified
 	// in client constructor via address or open connection. This can be used as a
 	// health check to see if node is alive and responses to requests.
-	EndpointInfo(context.Context, ...CallOption) (*netmap.NodeInfo, error)
-	// Epoch returns the epoch number from the local state of the remote host.
-	Epoch(context.Context, ...CallOption) (uint64, error)
+	EndpointInfo(context.Context, ...CallOption) (*EndpointInfo, error)
 	// NetworkInfo returns information about the NeoFS network of which the remote server is a part.
 	NetworkInfo(context.Context, ...CallOption) (*netmap.NetworkInfo, error)
 }
 
+// EACLWithSignature represents eACL table/signature pair.
+type EndpointInfo struct {
+	version *pkg.Version
+
+	ni *netmap.NodeInfo
+}
+
+// LatestVersion returns latest NeoFS API version in use.
+func (e *EndpointInfo) LatestVersion() *pkg.Version {
+	return e.version
+}
+
+// NodeInfo returns returns information about the NeoFS node.
+func (e *EndpointInfo) NodeInfo() *netmap.NodeInfo {
+	return e.ni
+}
+
 // EndpointInfo returns attributes, address and public key of the node, specified
 // in client constructor via address or open connection. This can be used as a
 // health check to see if node is alive and responses to requests.
-func (c clientImpl) EndpointInfo(ctx context.Context, opts ...CallOption) (*netmap.NodeInfo, error) {
-	switch c.remoteNode.Version.Major() {
-	case 2:
-		resp, err := c.endpointInfoV2(ctx, opts...)
-		if err != nil {
-			return nil, err
-		}
-
-		return netmap.NewNodeInfoFromV2(resp.GetBody().GetNodeInfo()), nil
-	default:
-		return nil, errUnsupportedProtocol
-	}
-}
-
-// Epoch returns the epoch number from the local state of the remote host.
-func (c clientImpl) Epoch(ctx context.Context, opts ...CallOption) (uint64, error) {
-	switch c.remoteNode.Version.Major() {
-	case 2:
-		resp, err := c.endpointInfoV2(ctx, opts...)
-		if err != nil {
-			return 0, err
-		}
-
-		return resp.GetMetaHeader().GetEpoch(), nil
-	default:
-		return 0, errUnsupportedProtocol
-	}
-}
-
-func (c clientImpl) endpointInfoV2(ctx context.Context, opts ...CallOption) (*v2netmap.LocalNodeInfoResponse, error) {
+func (c *clientImpl) EndpointInfo(ctx context.Context, opts ...CallOption) (*EndpointInfo, error) {
 	// apply all available options
 	callOptions := c.defaultCallOptions()
 
 	for i := range opts {
-		opts[i].apply(&callOptions)
+		opts[i](callOptions)
 	}
 
 	reqBody := new(v2netmap.LocalNodeInfoRequestBody)
@@ -73,81 +61,31 @@ func (c clientImpl) endpointInfoV2(ctx context.Context, opts ...CallOption) (*v2
 		return nil, err
 	}
 
-	switch c.remoteNode.Protocol {
-	case GRPC:
-		cli, err := v2NetmapClientFromOptions(c.opts)
-		if err != nil {
-			return nil, errors.Wrap(err, "can't create grpc client")
-		}
-
-		resp, err := cli.LocalNodeInfo(ctx, req)
-		if err != nil {
-			return nil, errors.Wrap(err, "transport error")
-		}
-
-		err = v2signature.VerifyServiceMessage(resp)
-		if err != nil {
-			return nil, errors.Wrap(err, "can't verify response message")
-		}
-
-		return resp, nil
-	default:
-		return nil, errUnsupportedProtocol
-	}
-}
-
-func v2NetmapClientFromOptions(opts *clientOptions) (cli *v2netmap.Client, err error) {
-	switch {
-	case opts.grpcOpts.v2NetmapClient != nil:
-		// return value from client cache
-		return opts.grpcOpts.v2NetmapClient, nil
-
-	case opts.grpcOpts.conn != nil:
-		cli, err = v2netmap.NewClient(v2netmap.WithGlobalOpts(
-			client.WithGRPCConn(opts.grpcOpts.conn)),
-		)
-
-	case opts.addr != "":
-		cli, err = v2netmap.NewClient(v2netmap.WithGlobalOpts(
-			client.WithNetworkAddress(opts.addr),
-			client.WithDialTimeout(opts.dialTimeout),
-		))
-
-	default:
-		return nil, errOptionsLack("Netmap")
-	}
-
-	// check if client correct and save in cache
+	resp, err := rpcapi.LocalNodeInfo(c.Raw(), req)
 	if err != nil {
-		return nil, err
+		return nil, errors.Wrap(err, "transport error")
 	}
 
-	opts.grpcOpts.v2NetmapClient = cli
+	err = v2signature.VerifyServiceMessage(resp)
+	if err != nil {
+		return nil, errors.Wrap(err, "can't verify response message")
+	}
 
-	return cli, nil
+	body := resp.GetBody()
+
+	return &EndpointInfo{
+		version: pkg.NewVersionFromV2(body.GetVersion()),
+		ni:      netmap.NewNodeInfoFromV2(body.GetNodeInfo()),
+	}, nil
 }
 
 // NetworkInfo returns information about the NeoFS network of which the remote server is a part.
-func (c clientImpl) NetworkInfo(ctx context.Context, opts ...CallOption) (*netmap.NetworkInfo, error) {
-	switch c.remoteNode.Version.Major() {
-	case 2:
-		resp, err := c.networkInfoV2(ctx, opts...)
-		if err != nil {
-			return nil, err
-		}
-
-		return netmap.NewNetworkInfoFromV2(resp.GetBody().GetNetworkInfo()), nil
-	default:
-		return nil, errUnsupportedProtocol
-	}
-}
-
-func (c clientImpl) networkInfoV2(ctx context.Context, opts ...CallOption) (*v2netmap.NetworkInfoResponse, error) {
+func (c *clientImpl) NetworkInfo(ctx context.Context, opts ...CallOption) (*netmap.NetworkInfo, error) {
 	// apply all available options
 	callOptions := c.defaultCallOptions()
 
 	for i := range opts {
-		opts[i].apply(&callOptions)
+		opts[i](callOptions)
 	}
 
 	reqBody := new(v2netmap.NetworkInfoRequestBody)
@@ -161,25 +99,15 @@ func (c clientImpl) networkInfoV2(ctx context.Context, opts ...CallOption) (*v2n
 		return nil, err
 	}
 
-	switch c.remoteNode.Protocol {
-	case GRPC:
-		cli, err := v2NetmapClientFromOptions(c.opts)
-		if err != nil {
-			return nil, errors.Wrap(err, "could not create grpc client")
-		}
-
-		resp, err := cli.NetworkInfo(ctx, req)
-		if err != nil {
-			return nil, errors.Wrap(err, "v2 NetworkInfo RPC failure")
-		}
-
-		err = v2signature.VerifyServiceMessage(resp)
-		if err != nil {
-			return nil, errors.Wrap(err, "response message verification failed")
-		}
-
-		return resp, nil
-	default:
-		return nil, errUnsupportedProtocol
+	resp, err := rpcapi.NetworkInfo(c.Raw(), req, client.WithContext(ctx))
+	if err != nil {
+		return nil, errors.Wrap(err, "v2 NetworkInfo RPC failure")
 	}
+
+	err = v2signature.VerifyServiceMessage(resp)
+	if err != nil {
+		return nil, errors.Wrap(err, "response message verification failed")
+	}
+
+	return netmap.NewNetworkInfoFromV2(resp.GetBody().GetNetworkInfo()), nil
 }
diff --git a/pkg/client/object.go b/pkg/client/object.go
index 62f99cf..b242422 100644
--- a/pkg/client/object.go
+++ b/pkg/client/object.go
@@ -10,10 +10,11 @@ import (
 
 	"github.com/nspcc-dev/neofs-api-go/pkg/container"
 	"github.com/nspcc-dev/neofs-api-go/pkg/object"
+	"github.com/nspcc-dev/neofs-api-go/rpc/client"
 	signer "github.com/nspcc-dev/neofs-api-go/util/signature"
-	"github.com/nspcc-dev/neofs-api-go/v2/client"
 	v2object "github.com/nspcc-dev/neofs-api-go/v2/object"
 	v2refs "github.com/nspcc-dev/neofs-api-go/v2/refs"
+	rpcapi "github.com/nspcc-dev/neofs-api-go/v2/rpc"
 	v2session "github.com/nspcc-dev/neofs-api-go/v2/session"
 	"github.com/nspcc-dev/neofs-api-go/v2/signature"
 	"github.com/pkg/errors"
@@ -114,7 +115,7 @@ type putObjectV2Writer struct {
 
 	req *v2object.PutRequest
 
-	stream v2object.PutObjectStreamer
+	stream *rpcapi.PutRequestWriter
 }
 
 type checksumType int
@@ -171,7 +172,7 @@ func (w *putObjectV2Writer) Write(p []byte) (int, error) {
 		return 0, errors.Wrap(err, "could not sign chunk request message")
 	}
 
-	if err := w.stream.Send(w.req); err != nil {
+	if err := w.stream.Write(w.req); err != nil {
 		return 0, errors.Wrap(err, "could not send chunk request message")
 	}
 
@@ -211,32 +212,11 @@ func (p *PutObjectParams) PayloadReader() io.Reader {
 }
 
 func (c *clientImpl) PutObject(ctx context.Context, p *PutObjectParams, opts ...CallOption) (*object.ID, error) {
-	// check remote node version
-	switch c.remoteNode.Version.Major() {
-	case 2:
-		return c.putObjectV2(ctx, p, opts...)
-	default:
-		return nil, errUnsupportedProtocol
-	}
-}
-
-func (c *clientImpl) putObjectV2(ctx context.Context, p *PutObjectParams, opts ...CallOption) (*object.ID, error) {
-	// create V2 Object client
-	cli, err := v2ObjectClient(c.remoteNode.Protocol, c.opts)
-	if err != nil {
-		return nil, errors.Wrap(err, "could not create Object V2 client")
-	}
-
-	stream, err := cli.Put(ctx)
-	if err != nil {
-		return nil, errors.Wrap(err, "could not open Put object stream")
-	}
-
 	callOpts := c.defaultCallOptions()
 
 	for i := range opts {
 		if opts[i] != nil {
-			opts[i].apply(&callOpts)
+			opts[i](callOpts)
 		}
 	}
 
@@ -253,11 +233,12 @@ func (c *clientImpl) putObjectV2(ctx context.Context, p *PutObjectParams, opts .
 
 	// set meta header
 	meta := v2MetaHeaderFromOpts(callOpts)
-	if err = c.attachV2SessionToken(callOpts, meta, v2SessionReqInfo{
+
+	if err := c.attachV2SessionToken(callOpts, meta, v2SessionReqInfo{
 		addr: v2Addr,
 		verb: v2session.ObjectVerbPut,
 	}); err != nil {
-		return nil, errors.Wrap(err, "could not sign session token")
+		return nil, errors.Wrap(err, "could not attach session token")
 	}
 
 	req.SetMetaHeader(meta)
@@ -275,12 +256,21 @@ func (c *clientImpl) putObjectV2(ctx context.Context, p *PutObjectParams, opts .
 
 	// sign the request
 	if err := signature.SignServiceMessage(callOpts.key, req); err != nil {
-		return nil, errors.Wrapf(err, "could not sign %T", req)
+		return nil, errors.Wrapf(err, "signing the request failed")
+	}
+
+	// open stream
+	resp := new(v2object.PutResponse)
+
+	stream, err := rpcapi.PutObject(c.Raw(), resp, client.WithContext(ctx))
+	if err != nil {
+		return nil, errors.Wrap(err, "stream opening failed")
 	}
 
 	// send init part
-	if err := stream.Send(req); err != nil {
-		return nil, errors.Wrapf(err, "could not send %T", req)
+	err = stream.Write(req)
+	if err != nil {
+		return nil, errors.Wrap(err, "sending the initial message to stream failed")
 	}
 
 	// create payload bytes reader
@@ -305,18 +295,18 @@ func (c *clientImpl) putObjectV2(ctx context.Context, p *PutObjectParams, opts .
 	// copy payload from reader to stream writer
 	_, err = io.CopyBuffer(w, r, make([]byte, chunkSize))
 	if err != nil && !errors.Is(errors.Cause(err), io.EOF) {
-		return nil, errors.Wrap(err, "could not send payload bytes to Put object stream")
+		return nil, errors.Wrap(err, "payload streaming failed")
 	}
 
 	// close object stream and receive response from remote node
-	resp, err := stream.CloseAndRecv()
+	err = stream.Close()
 	if err != nil {
-		return nil, errors.Wrapf(err, "could not close %T", stream)
+		return nil, errors.Wrap(err, "closing the stream failed")
 	}
 
 	// verify response structure
 	if err := signature.VerifyServiceMessage(resp); err != nil {
-		return nil, errors.Wrapf(err, "could not verify %T", resp)
+		return nil, errors.Wrap(err, "response verification failed")
 	}
 
 	// convert object identifier
@@ -377,39 +367,11 @@ func DeleteObject(ctx context.Context, c Client, p *DeleteObjectParams, opts ...
 //
 // If target of tombstone address is not set, the address is ignored.
 func (c *clientImpl) DeleteObject(ctx context.Context, p *DeleteObjectParams, opts ...CallOption) error {
-	// check remote node version
-	switch c.remoteNode.Version.Major() {
-	case 2:
-		if p.tombTgt == nil {
-			p.tombTgt = new(objectAddressWriter)
-		}
-
-		resp, err := c.deleteObjectV2(ctx, p, opts...)
-		if err != nil {
-			return err
-		}
-
-		addrV2 := resp.GetBody().GetTombstone()
-		p.tombTgt.SetAddress(object.NewAddressFromV2(addrV2))
-
-		return nil
-	default:
-		return errUnsupportedProtocol
-	}
-}
-
-func (c *clientImpl) deleteObjectV2(ctx context.Context, p *DeleteObjectParams, opts ...CallOption) (*v2object.DeleteResponse, error) {
-	// create V2 Object client
-	cli, err := v2ObjectClient(c.remoteNode.Protocol, c.opts)
-	if err != nil {
-		return nil, errors.Wrap(err, "could not create Object V2 client")
-	}
-
 	callOpts := c.defaultCallOptions()
 
 	for i := range opts {
 		if opts[i] != nil {
-			opts[i].apply(&callOpts)
+			opts[i](callOpts)
 		}
 	}
 
@@ -422,11 +384,12 @@ func (c *clientImpl) deleteObjectV2(ctx context.Context, p *DeleteObjectParams,
 
 	// set meta header
 	meta := v2MetaHeaderFromOpts(callOpts)
-	if err = c.attachV2SessionToken(callOpts, meta, v2SessionReqInfo{
+
+	if err := c.attachV2SessionToken(callOpts, meta, v2SessionReqInfo{
 		addr: p.addr.ToV2(),
 		verb: v2session.ObjectVerbDelete,
 	}); err != nil {
-		return nil, errors.Wrap(err, "could not sign session token")
+		return errors.Wrap(err, "could not attach session token")
 	}
 
 	req.SetMetaHeader(meta)
@@ -436,21 +399,25 @@ func (c *clientImpl) deleteObjectV2(ctx context.Context, p *DeleteObjectParams,
 
 	// sign the request
 	if err := signature.SignServiceMessage(callOpts.key, req); err != nil {
-		return nil, errors.Wrapf(err, "could not sign %T", req)
+		return errors.Wrap(err, "signing the request failed")
 	}
 
 	// send request
-	resp, err := cli.Delete(ctx, req)
+	resp, err := rpcapi.DeleteObject(c.Raw(), req, client.WithContext(ctx))
 	if err != nil {
-		return nil, errors.Wrapf(err, "could not send %T", req)
+		return errors.Wrap(err, "sending the request failed")
 	}
 
 	// verify response structure
 	if err := signature.VerifyServiceMessage(resp); err != nil {
-		return nil, errors.Wrapf(err, "could not verify %T", resp)
+		return errors.Wrap(err, "response verification failed")
 	}
 
-	return resp, nil
+	if p.tombTgt != nil {
+		p.tombTgt.SetAddress(object.NewAddressFromV2(resp.GetBody().GetTombstone()))
+	}
+
+	return nil
 }
 
 func (p *GetObjectParams) WithAddress(v *object.Address) *GetObjectParams {
@@ -501,28 +468,14 @@ func (p *GetObjectParams) RawFlag() bool {
 	return false
 }
 
+var errWrongMessageSeq = errors.New("incorrect message sequence")
+
 func (c *clientImpl) GetObject(ctx context.Context, p *GetObjectParams, opts ...CallOption) (*object.Object, error) {
-	// check remote node version
-	switch c.remoteNode.Version.Major() {
-	case 2:
-		return c.getObjectV2(ctx, p, opts...)
-	default:
-		return nil, errUnsupportedProtocol
-	}
-}
-
-func (c *clientImpl) getObjectV2(ctx context.Context, p *GetObjectParams, opts ...CallOption) (*object.Object, error) {
-	// create V2 Object client
-	cli, err := v2ObjectClient(c.remoteNode.Protocol, c.opts)
-	if err != nil {
-		return nil, errors.Wrap(err, "could not create Object V2 client")
-	}
-
 	callOpts := c.defaultCallOptions()
 
 	for i := range opts {
 		if opts[i] != nil {
-			opts[i].apply(&callOpts)
+			opts[i](callOpts)
 		}
 	}
 
@@ -535,11 +488,12 @@ func (c *clientImpl) getObjectV2(ctx context.Context, p *GetObjectParams, opts .
 
 	// set meta header
 	meta := v2MetaHeaderFromOpts(callOpts)
-	if err = c.attachV2SessionToken(callOpts, meta, v2SessionReqInfo{
+
+	if err := c.attachV2SessionToken(callOpts, meta, v2SessionReqInfo{
 		addr: p.addr.ToV2(),
 		verb: v2session.ObjectVerbGet,
 	}); err != nil {
-		return nil, errors.Wrap(err, "could not sign session token")
+		return nil, errors.Wrap(err, "could not attach session token")
 	}
 
 	req.SetMetaHeader(meta)
@@ -550,40 +504,52 @@ func (c *clientImpl) getObjectV2(ctx context.Context, p *GetObjectParams, opts .
 
 	// sign the request
 	if err := signature.SignServiceMessage(callOpts.key, req); err != nil {
-		return nil, errors.Wrapf(err, "could not sign %T", req)
+		return nil, errors.Wrap(err, "signing the request failed")
 	}
 
-	// create Get object stream
-	stream, err := cli.Get(ctx, req)
+	// open stream
+	stream, err := rpcapi.GetObject(c.Raw(), req, client.WithContext(ctx))
 	if err != nil {
-		return nil, errors.Wrap(err, "could not create Get object stream")
+		return nil, errors.Wrap(err, "stream opening failed")
 	}
 
 	var (
+		headWas bool
 		payload []byte
 		obj     = new(v2object.Object)
+		resp    = new(v2object.GetResponse)
 	)
 
 	for {
 		// receive message from server stream
-		resp, err := stream.Recv()
+		err := stream.Read(resp)
 		if err != nil {
 			if errors.Is(errors.Cause(err), io.EOF) {
+				if !headWas {
+					return nil, io.ErrUnexpectedEOF
+				}
+
 				break
 			}
 
-			return nil, errors.Wrap(err, "could not receive Get response")
+			return nil, errors.Wrap(err, "reading the response failed")
 		}
 
 		// verify response structure
 		if err := signature.VerifyServiceMessage(resp); err != nil {
-			return nil, errors.Wrapf(err, "could not verify %T", resp)
+			return nil, errors.Wrap(err, "response verification failed")
 		}
 
 		switch v := resp.GetBody().GetObjectPart().(type) {
-		case nil:
-			return nil, errNilObjectPart
+		default:
+			return nil, errors.Errorf("unexpected object part %T", v)
 		case *v2object.GetObjectPartInit:
+			if headWas {
+				return nil, errWrongMessageSeq
+			}
+
+			headWas = true
+
 			obj.SetObjectID(v.GetObjectID())
 			obj.SetSignature(v.GetSignature())
 
@@ -594,6 +560,10 @@ func (c *clientImpl) getObjectV2(ctx context.Context, p *GetObjectParams, opts .
 				payload = make([]byte, 0, hdr.GetPayloadLength())
 			}
 		case *v2object.GetObjectPartChunk:
+			if !headWas {
+				return nil, errWrongMessageSeq
+			}
+
 			if p.w != nil {
 				if _, err := p.w.Write(v.GetChunk()); err != nil {
 					return nil, errors.Wrap(err, "could not write payload chunk")
@@ -604,8 +574,6 @@ func (c *clientImpl) getObjectV2(ctx context.Context, p *GetObjectParams, opts .
 		case *v2object.SplitInfo:
 			si := object.NewSplitInfoFromV2(v)
 			return nil, object.NewSplitInfoError(si)
-		default:
-			panic(fmt.Sprintf("unexpected Get object part type %T", v))
 		}
 	}
 
@@ -674,27 +642,11 @@ func (p *ObjectHeaderParams) RawFlag() bool {
 }
 
 func (c *clientImpl) GetObjectHeader(ctx context.Context, p *ObjectHeaderParams, opts ...CallOption) (*object.Object, error) {
-	// check remote node version
-	switch c.remoteNode.Version.Major() {
-	case 2:
-		return c.getObjectHeaderV2(ctx, p, opts...)
-	default:
-		return nil, errUnsupportedProtocol
-	}
-}
-
-func (c *clientImpl) getObjectHeaderV2(ctx context.Context, p *ObjectHeaderParams, opts ...CallOption) (*object.Object, error) {
-	// create V2 Object client
-	cli, err := v2ObjectClient(c.remoteNode.Protocol, c.opts)
-	if err != nil {
-		return nil, errors.Wrap(err, "could not create Object V2 client")
-	}
-
 	callOpts := c.defaultCallOptions()
 
 	for i := range opts {
 		if opts[i] != nil {
-			opts[i].apply(&callOpts)
+			opts[i](callOpts)
 		}
 	}
 
@@ -707,11 +659,12 @@ func (c *clientImpl) getObjectHeaderV2(ctx context.Context, p *ObjectHeaderParam
 
 	// set meta header
 	meta := v2MetaHeaderFromOpts(callOpts)
-	if err = c.attachV2SessionToken(callOpts, meta, v2SessionReqInfo{
+
+	if err := c.attachV2SessionToken(callOpts, meta, v2SessionReqInfo{
 		addr: p.addr.ToV2(),
 		verb: v2session.ObjectVerbHead,
 	}); err != nil {
-		return nil, errors.Wrap(err, "could not sign session token")
+		return nil, errors.Wrap(err, "could not attach session token")
 	}
 
 	req.SetMetaHeader(meta)
@@ -723,18 +676,18 @@ func (c *clientImpl) getObjectHeaderV2(ctx context.Context, p *ObjectHeaderParam
 
 	// sign the request
 	if err := signature.SignServiceMessage(callOpts.key, req); err != nil {
-		return nil, errors.Wrapf(err, "could not sign %T", req)
+		return nil, errors.Wrap(err, "signing the request failed")
 	}
 
 	// send Head request
-	resp, err := cli.Head(ctx, req)
+	resp, err := rpcapi.HeadObject(c.Raw(), req, client.WithContext(ctx))
 	if err != nil {
-		return nil, errors.Wrapf(err, "could not send %T", req)
+		return nil, errors.Wrap(err, "sending the request failed")
 	}
 
 	// verify response structure
 	if err := signature.VerifyServiceMessage(resp); err != nil {
-		return nil, errors.Wrapf(err, "could not verify %T", resp)
+		return nil, errors.Wrap(err, "response verification failed")
 	}
 
 	var (
@@ -744,7 +697,7 @@ func (c *clientImpl) getObjectHeaderV2(ctx context.Context, p *ObjectHeaderParam
 
 	switch v := resp.GetBody().GetHeaderPart().(type) {
 	case nil:
-		return nil, errNilObjectPart
+		return nil, errors.Errorf("unexpected header type %T", v)
 	case *v2object.ShortHeader:
 		if !p.short {
 			return nil, errors.Errorf("wrong header part type: expected %T, received %T",
@@ -791,8 +744,6 @@ func (c *clientImpl) getObjectHeaderV2(ctx context.Context, p *ObjectHeaderParam
 		si := object.NewSplitInfoFromV2(v)
 
 		return nil, object.NewSplitInfoError(si)
-	default:
-		panic(fmt.Sprintf("unexpected Head object type %T", v))
 	}
 
 	obj := new(v2object.Object)
@@ -871,27 +822,11 @@ func (p *RangeDataParams) DataWriter() io.Writer {
 }
 
 func (c *clientImpl) ObjectPayloadRangeData(ctx context.Context, p *RangeDataParams, opts ...CallOption) ([]byte, error) {
-	// check remote node version
-	switch c.remoteNode.Version.Major() {
-	case 2:
-		return c.objectPayloadRangeV2(ctx, p, opts...)
-	default:
-		return nil, errUnsupportedProtocol
-	}
-}
-
-func (c *clientImpl) objectPayloadRangeV2(ctx context.Context, p *RangeDataParams, opts ...CallOption) ([]byte, error) {
-	// create V2 Object client
-	cli, err := v2ObjectClient(c.remoteNode.Protocol, c.opts)
-	if err != nil {
-		return nil, errors.Wrap(err, "could not create Object V2 client")
-	}
-
 	callOpts := c.defaultCallOptions()
 
 	for i := range opts {
 		if opts[i] != nil {
-			opts[i].apply(&callOpts)
+			opts[i](callOpts)
 		}
 	}
 
@@ -904,11 +839,12 @@ func (c *clientImpl) objectPayloadRangeV2(ctx context.Context, p *RangeDataParam
 
 	// set meta header
 	meta := v2MetaHeaderFromOpts(callOpts)
-	if err = c.attachV2SessionToken(callOpts, meta, v2SessionReqInfo{
+
+	if err := c.attachV2SessionToken(callOpts, meta, v2SessionReqInfo{
 		addr: p.addr.ToV2(),
 		verb: v2session.ObjectVerbRange,
 	}); err != nil {
-		return nil, errors.Wrap(err, "could not sign session token")
+		return nil, errors.Wrap(err, "could not attach session token")
 	}
 
 	req.SetMetaHeader(meta)
@@ -920,11 +856,11 @@ func (c *clientImpl) objectPayloadRangeV2(ctx context.Context, p *RangeDataParam
 
 	// sign the request
 	if err := signature.SignServiceMessage(callOpts.key, req); err != nil {
-		return nil, errors.Wrapf(err, "could not sign %T", req)
+		return nil, errors.Wrapf(err, "signing the request failed")
 	}
 
-	// create Get payload range stream
-	stream, err := cli.GetRange(ctx, req)
+	// open stream
+	stream, err := rpcapi.GetObjectRange(c.Raw(), req, client.WithContext(ctx))
 	if err != nil {
 		return nil, errors.Wrap(err, "could not create Get payload range stream")
 	}
@@ -934,15 +870,17 @@ func (c *clientImpl) objectPayloadRangeV2(ctx context.Context, p *RangeDataParam
 		payload = make([]byte, p.r.GetLength())
 	}
 
+	resp := new(v2object.GetRangeResponse)
+
 	for {
 		// receive message from server stream
-		resp, err := stream.Recv()
+		err := stream.Read(resp)
 		if err != nil {
 			if errors.Is(errors.Cause(err), io.EOF) {
 				break
 			}
 
-			return nil, errors.Wrap(err, "could not receive Get payload range response")
+			return nil, errors.Wrap(err, "reading the response failed")
 		}
 
 		// verify response structure
@@ -952,7 +890,7 @@ func (c *clientImpl) objectPayloadRangeV2(ctx context.Context, p *RangeDataParam
 
 		switch v := resp.GetBody().GetRangePart().(type) {
 		case nil:
-			return nil, errNilObjectPart
+			return nil, errors.Errorf("unexpected range type %T", v)
 		case *v2object.GetRangePartChunk:
 			if p.w != nil {
 				if _, err = p.w.Write(v.GetChunk()); err != nil {
@@ -965,8 +903,6 @@ func (c *clientImpl) objectPayloadRangeV2(ctx context.Context, p *RangeDataParam
 			si := object.NewSplitInfoFromV2(v)
 
 			return nil, object.NewSplitInfoError(si)
-		default:
-			panic(fmt.Sprintf("unexpected GetRange object type %T", v))
 		}
 	}
 
@@ -1048,27 +984,11 @@ func (c *clientImpl) ObjectPayloadRangeTZ(ctx context.Context, p *RangeChecksumP
 }
 
 func (c *clientImpl) objectPayloadRangeHash(ctx context.Context, p *RangeChecksumParams, opts ...CallOption) (interface{}, error) {
-	// check remote node version
-	switch c.remoteNode.Version.Major() {
-	case 2:
-		return c.objectPayloadRangeHashV2(ctx, p, opts...)
-	default:
-		return nil, errUnsupportedProtocol
-	}
-}
-
-func (c *clientImpl) objectPayloadRangeHashV2(ctx context.Context, p *RangeChecksumParams, opts ...CallOption) (interface{}, error) {
-	// create V2 Object client
-	cli, err := v2ObjectClient(c.remoteNode.Protocol, c.opts)
-	if err != nil {
-		return nil, errors.Wrap(err, "could not create Object V2 client")
-	}
-
 	callOpts := c.defaultCallOptions()
 
 	for i := range opts {
 		if opts[i] != nil {
-			opts[i].apply(&callOpts)
+			opts[i](callOpts)
 		}
 	}
 
@@ -1081,11 +1001,12 @@ func (c *clientImpl) objectPayloadRangeHashV2(ctx context.Context, p *RangeCheck
 
 	// set meta header
 	meta := v2MetaHeaderFromOpts(callOpts)
-	if err = c.attachV2SessionToken(callOpts, meta, v2SessionReqInfo{
+
+	if err := c.attachV2SessionToken(callOpts, meta, v2SessionReqInfo{
 		addr: p.addr.ToV2(),
 		verb: v2session.ObjectVerbRangeHash,
 	}); err != nil {
-		return nil, errors.Wrap(err, "could not sign session token")
+		return nil, errors.Wrap(err, "could not attach session token")
 	}
 
 	req.SetMetaHeader(meta)
@@ -1102,18 +1023,18 @@ func (c *clientImpl) objectPayloadRangeHashV2(ctx context.Context, p *RangeCheck
 
 	// sign the request
 	if err := signature.SignServiceMessage(callOpts.key, req); err != nil {
-		return nil, errors.Wrapf(err, "could not sign %T", req)
+		return nil, errors.Wrapf(err, "signing the request failed")
 	}
 
 	// send request
-	resp, err := cli.GetRangeHash(ctx, req)
+	resp, err := rpcapi.HashObjectRange(c.Raw(), req, client.WithContext(ctx))
 	if err != nil {
-		return nil, errors.Wrapf(err, "could not send %T", req)
+		return nil, errors.Wrap(err, "sending the request failed")
 	}
 
 	// verify response structure
 	if err := signature.VerifyServiceMessage(resp); err != nil {
-		return nil, errors.Wrapf(err, "could not verify %T", resp)
+		return nil, errors.Wrap(err, "response verification failed")
 	}
 
 	respBody := resp.GetBody()
@@ -1197,27 +1118,11 @@ func (p *SearchObjectParams) SearchFilters() object.SearchFilters {
 }
 
 func (c *clientImpl) SearchObject(ctx context.Context, p *SearchObjectParams, opts ...CallOption) ([]*object.ID, error) {
-	// check remote node version
-	switch c.remoteNode.Version.Major() {
-	case 2:
-		return c.searchObjectV2(ctx, p, opts...)
-	default:
-		return nil, errUnsupportedProtocol
-	}
-}
-
-func (c *clientImpl) searchObjectV2(ctx context.Context, p *SearchObjectParams, opts ...CallOption) ([]*object.ID, error) {
-	// create V2 Object client
-	cli, err := v2ObjectClient(c.remoteNode.Protocol, c.opts)
-	if err != nil {
-		return nil, errors.Wrap(err, "could not create Object V2 client")
-	}
-
 	callOpts := c.defaultCallOptions()
 
 	for i := range opts {
 		if opts[i] != nil {
-			opts[i].apply(&callOpts)
+			opts[i](callOpts)
 		}
 	}
 
@@ -1233,11 +1138,12 @@ func (c *clientImpl) searchObjectV2(ctx context.Context, p *SearchObjectParams,
 
 	// set meta header
 	meta := v2MetaHeaderFromOpts(callOpts)
-	if err = c.attachV2SessionToken(callOpts, meta, v2SessionReqInfo{
+
+	if err := c.attachV2SessionToken(callOpts, meta, v2SessionReqInfo{
 		addr: v2Addr,
 		verb: v2session.ObjectVerbSearch,
 	}); err != nil {
-		return nil, errors.Wrap(err, "could not sign session token")
+		return nil, errors.Wrap(err, "could not attach session token")
 	}
 
 	req.SetMetaHeader(meta)
@@ -1249,26 +1155,29 @@ func (c *clientImpl) searchObjectV2(ctx context.Context, p *SearchObjectParams,
 
 	// sign the request
 	if err := signature.SignServiceMessage(callOpts.key, req); err != nil {
-		return nil, errors.Wrapf(err, "could not sign %T", req)
+		return nil, errors.Wrapf(err, "signing the request failed")
 	}
 
 	// create search stream
-	stream, err := cli.Search(ctx, req)
+	stream, err := rpcapi.SearchObjects(c.Raw(), req, client.WithContext(ctx))
 	if err != nil {
-		return nil, errors.Wrap(err, "could not create search stream")
+		return nil, errors.Wrap(err, "stream opening failed")
 	}
 
-	var searchResult []*object.ID
+	var (
+		searchResult []*object.ID
+		resp         = new(v2object.SearchResponse)
+	)
 
 	for {
 		// receive message from server stream
-		resp, err := stream.Recv()
+		err := stream.Read(resp)
 		if err != nil {
 			if errors.Is(errors.Cause(err), io.EOF) {
 				break
 			}
 
-			return nil, errors.Wrap(err, "could not receive search response")
+			return nil, errors.Wrap(err, "reading the response failed")
 		}
 
 		// verify response structure
@@ -1285,39 +1194,7 @@ func (c *clientImpl) searchObjectV2(ctx context.Context, p *SearchObjectParams,
 	return searchResult, nil
 }
 
-func v2ObjectClient(proto TransportProtocol, opts *clientOptions) (*v2object.Client, error) {
-	switch proto {
-	case GRPC:
-		var err error
-
-		if opts.grpcOpts.objectClientV2 == nil {
-			var optsV2 []v2object.Option
-
-			if opts.grpcOpts.conn != nil {
-				optsV2 = []v2object.Option{
-					v2object.WithGlobalOpts(
-						client.WithGRPCConn(opts.grpcOpts.conn),
-					),
-				}
-			} else {
-				optsV2 = []v2object.Option{
-					v2object.WithGlobalOpts(
-						client.WithNetworkAddress(opts.addr),
-						client.WithDialTimeout(opts.dialTimeout),
-					),
-				}
-			}
-
-			opts.grpcOpts.objectClientV2, err = v2object.NewClient(optsV2...)
-		}
-
-		return opts.grpcOpts.objectClientV2, err
-	default:
-		return nil, errUnsupportedProtocol
-	}
-}
-
-func (c clientImpl) attachV2SessionToken(opts callOptions, hdr *v2session.RequestMetaHeader, info v2SessionReqInfo) error {
+func (c *clientImpl) attachV2SessionToken(opts *callOptions, hdr *v2session.RequestMetaHeader, info v2SessionReqInfo) error {
 	if opts.session == nil {
 		return nil
 	}
diff --git a/pkg/client/opts.go b/pkg/client/opts.go
index 9f16888..9825d49 100644
--- a/pkg/client/opts.go
+++ b/pkg/client/opts.go
@@ -2,29 +2,20 @@ package client
 
 import (
 	"crypto/ecdsa"
-	"fmt"
 	"time"
 
 	"github.com/nspcc-dev/neofs-api-go/pkg"
-	"github.com/nspcc-dev/neofs-api-go/pkg/owner"
 	"github.com/nspcc-dev/neofs-api-go/pkg/token"
-	v2accounting "github.com/nspcc-dev/neofs-api-go/v2/accounting"
-	v2container "github.com/nspcc-dev/neofs-api-go/v2/container"
-	v2netmap "github.com/nspcc-dev/neofs-api-go/v2/netmap"
-	v2object "github.com/nspcc-dev/neofs-api-go/v2/object"
+	"github.com/nspcc-dev/neofs-api-go/rpc/client"
 	"github.com/nspcc-dev/neofs-api-go/v2/refs"
 	v2session "github.com/nspcc-dev/neofs-api-go/v2/session"
 	"google.golang.org/grpc"
 )
 
 type (
-	CallOption interface {
-		apply(*callOptions)
-	}
+	CallOption func(*callOptions)
 
-	Option interface {
-		apply(*clientOptions)
-	}
+	Option func(*clientOptions)
 
 	callOptions struct {
 		version  *pkg.Version
@@ -37,21 +28,9 @@ type (
 	}
 
 	clientOptions struct {
-		addr string
+		key *ecdsa.PrivateKey
 
-		dialTimeout time.Duration
-
-		grpcOpts *grpcOptions
-	}
-
-	grpcOptions struct {
-		conn               *grpc.ClientConn
-		v2ContainerClient  *v2container.Client
-		v2AccountingClient *v2accounting.Client
-		v2SessionClient    *v2session.Client
-		v2NetmapClient     *v2netmap.Client
-
-		objectClientV2 *v2object.Client
+		rawOpts []client.Option
 	}
 
 	v2SessionReqInfo struct {
@@ -62,74 +41,52 @@ type (
 	}
 )
 
-type errOptionsLack string
-
-func (e errOptionsLack) Error() string {
-	return fmt.Sprintf("lack of sdk client options to create %s client", string(e))
-}
-
-func (c clientImpl) defaultCallOptions() callOptions {
-	return callOptions{
-		ttl:     2,
+func (c *clientImpl) defaultCallOptions() *callOptions {
+	return &callOptions{
 		version: pkg.SDKVersion(),
-		key:     c.key,
-		session: c.sessionToken,
-		bearer:  c.bearerToken,
-	}
-}
-
-type funcCallOption struct {
-	f func(*callOptions)
-}
-
-func (fco *funcCallOption) apply(co *callOptions) {
-	fco.f(co)
-}
-
-func newFuncCallOption(f func(option *callOptions)) *funcCallOption {
-	return &funcCallOption{
-		f: f,
+		ttl:     2,
+		key:     c.opts.key,
 	}
 }
 
 func WithXHeader(x *pkg.XHeader) CallOption {
-	return newFuncCallOption(func(option *callOptions) {
-		option.xHeaders = append(option.xHeaders, x)
-	})
+	return func(opts *callOptions) {
+		opts.xHeaders = append(opts.xHeaders, x)
+	}
 }
 
 func WithTTL(ttl uint32) CallOption {
-	return newFuncCallOption(func(option *callOptions) {
-		option.ttl = ttl
-	})
+	return func(opts *callOptions) {
+		opts.ttl = ttl
+	}
 }
 
 // WithKey sets client's key for the next request.
 func WithKey(key *ecdsa.PrivateKey) CallOption {
-	return newFuncCallOption(func(option *callOptions) {
-		option.key = key
-	})
+	return func(opts *callOptions) {
+		opts.key = key
+	}
 }
 
 func WithEpoch(epoch uint64) CallOption {
-	return newFuncCallOption(func(option *callOptions) {
-		option.epoch = epoch
-	})
+	return func(opts *callOptions) {
+		opts.epoch = epoch
+	}
 }
 
 func WithSession(token *token.SessionToken) CallOption {
-	return newFuncCallOption(func(option *callOptions) {
-		option.session = token
-	})
+	return func(opts *callOptions) {
+		opts.session = token
+	}
 }
 
 func WithBearer(token *token.BearerToken) CallOption {
-	return newFuncCallOption(func(option *callOptions) {
-		option.bearer = token
-	})
+	return func(opts *callOptions) {
+		opts.bearer = token
+	}
 }
 
-func v2MetaHeaderFromOpts(options callOptions) *v2session.RequestMetaHeader {
+func v2MetaHeaderFromOpts(options *callOptions) *v2session.RequestMetaHeader {
 	meta := new(v2session.RequestMetaHeader)
 	meta.SetVersion(options.version.ToV2())
 	meta.SetTTL(options.ttl)
@@ -153,50 +110,33 @@ func v2MetaHeaderFromOpts(options callOptions) *v2session.RequestMetaHeader {
 
 func defaultClientOptions() *clientOptions {
 	return &clientOptions{
-		grpcOpts: new(grpcOptions),
-	}
-}
-
-type funcClientOption struct {
-	f func(*clientOptions)
-}
-
-func (fco *funcClientOption) apply(co *clientOptions) {
-	fco.f(co)
-}
-
-func newFuncClientOption(f func(option *clientOptions)) *funcClientOption {
-	return &funcClientOption{
-		f: f,
+		rawOpts: make([]client.Option, 0, 3),
 	}
 }
 
 func WithAddress(addr string) Option {
-	return newFuncClientOption(func(option *clientOptions) {
-		option.addr = addr
-	})
+	return func(opts *clientOptions) {
+		opts.rawOpts = append(opts.rawOpts, client.WithNetworkAddress(addr))
+	}
 }
 
 func WithGRPCConnection(grpcConn *grpc.ClientConn) Option {
-	return newFuncClientOption(func(option *clientOptions) {
-		option.grpcOpts.conn = grpcConn
-	})
+	return func(opts *clientOptions) {
+		opts.rawOpts = append(opts.rawOpts, client.WithGRPCConn(grpcConn))
+	}
 }
 
 // WithDialTimeout returns option to set connection timeout to the remote node.
 func WithDialTimeout(dur time.Duration) Option {
-	return newFuncClientOption(func(option *clientOptions) {
-		option.dialTimeout = dur
-	})
-}
-
-func newOwnerIDFromKey(key *ecdsa.PublicKey) (*owner.ID, error) {
-	w, err := owner.NEO3WalletFromPublicKey(key)
-	if err != nil {
-		return nil, err
+	return func(opts *clientOptions) {
+		opts.rawOpts = append(opts.rawOpts, client.WithDialTimeout(dur))
+	}
+}
+
+// WithDefaultPrivateKey returns option to set default private key
+// used for the work.
+func WithDefaultPrivateKey(key *ecdsa.PrivateKey) Option {
+	return func(opts *clientOptions) {
+		opts.key = key
 	}
-
-	ownerID := new(owner.ID)
-	ownerID.SetNeo3Wallet(w)
-	return ownerID, nil
 }
diff --git a/pkg/client/raw.go b/pkg/client/raw.go
new file mode 100644
index 0000000..a8fce33
--- /dev/null
+++ b/pkg/client/raw.go
@@ -0,0 +1,14 @@
+package client
+
+import (
+	"github.com/nspcc-dev/neofs-api-go/rpc/client"
+)
+
+// Raw returns underlying raw protobuf client.
+func (c *clientImpl) Raw() *client.Client {
+	c.onceInit.Do(func() {
+		c.raw = client.New(c.opts.rawOpts...)
+	})
+
+	return c.raw
+}
diff --git a/pkg/client/session.go b/pkg/client/session.go
index 4df7263..b7afa03 100644
--- a/pkg/client/session.go
+++ b/pkg/client/session.go
@@ -5,7 +5,8 @@ import (
 
 	"github.com/nspcc-dev/neofs-api-go/pkg/owner"
 	"github.com/nspcc-dev/neofs-api-go/pkg/token"
-	"github.com/nspcc-dev/neofs-api-go/v2/client"
+	"github.com/nspcc-dev/neofs-api-go/rpc/client"
+	rpcapi "github.com/nspcc-dev/neofs-api-go/v2/rpc"
 	v2session "github.com/nspcc-dev/neofs-api-go/v2/session"
 	v2signature "github.com/nspcc-dev/neofs-api-go/v2/signature"
 	"github.com/pkg/errors"
@@ -15,29 +16,16 @@ import (
 type Session interface {
 	// CreateSession creates session using provided expiration time.
 	CreateSession(context.Context, uint64, ...CallOption) (*token.SessionToken, error)
-	// AttachSessionToken attaches session token to be used by default for following requests.
-	AttachSessionToken(*token.SessionToken)
-	// AttachBearerToken attaches bearer token to be used by default for following requests.
-	AttachBearerToken(*token.BearerToken)
 }
 
 var errMalformedResponseBody = errors.New("malformed response body")
 
-func (c clientImpl) CreateSession(ctx context.Context, expiration uint64, opts ...CallOption) (*token.SessionToken, error) {
-	switch c.remoteNode.Version.Major() {
-	case 2:
-		return c.createSessionV2(ctx, expiration, opts...)
-	default:
-		return nil, errUnsupportedProtocol
-	}
-}
-
-func (c clientImpl) createSessionV2(ctx context.Context, expiration uint64, opts ...CallOption) (*token.SessionToken, error) {
+func (c *clientImpl) CreateSession(ctx context.Context, expiration uint64, opts ...CallOption) (*token.SessionToken, error) {
 	// apply all available options
 	callOptions := c.defaultCallOptions()
 
 	for i := range opts {
-		opts[i].apply(&callOptions)
+		opts[i](callOptions)
 	}
 
 	w, err := owner.NEO3WalletFromPublicKey(&callOptions.key.PublicKey)
@@ -61,82 +49,25 @@ func (c clientImpl) createSessionV2(ctx context.Context, expiration uint64, opts
 		return nil, err
 	}
 
-	switch c.remoteNode.Protocol {
-	case GRPC:
-		cli, err := v2SessionClientFromOptions(c.opts)
-		if err != nil {
-			return nil, errors.Wrap(err, "can't create grpc client")
-		}
-
-		resp, err := cli.Create(ctx, req)
-		if err != nil {
-			return nil, errors.Wrap(err, "transport error")
-		}
-
-		err = v2signature.VerifyServiceMessage(resp)
-		if err != nil {
-			return nil, errors.Wrap(err, "can't verify response message")
-		}
-
-		body := resp.GetBody()
-		if body == nil {
-			return nil, errMalformedResponseBody
-		}
-
-		sessionToken := token.NewSessionToken()
-		sessionToken.SetID(body.GetID())
-		sessionToken.SetSessionKey(body.GetSessionKey())
-		sessionToken.SetOwnerID(ownerID)
-
-		return sessionToken, nil
-	default:
-		return nil, errUnsupportedProtocol
-	}
-}
-
-func v2SessionClientFromOptions(opts *clientOptions) (cli *v2session.Client, err error) {
-	switch {
-	case opts.grpcOpts.v2SessionClient != nil:
-		// return value from client cache
-		return opts.grpcOpts.v2SessionClient, nil
-
-	case opts.grpcOpts.conn != nil:
-		cli, err = v2session.NewClient(v2session.WithGlobalOpts(
-			client.WithGRPCConn(opts.grpcOpts.conn)),
-		)
-
-	case opts.addr != "":
-		cli, err = v2session.NewClient(v2session.WithGlobalOpts(
-			client.WithNetworkAddress(opts.addr),
-			client.WithDialTimeout(opts.dialTimeout),
-		))
-
-	default:
-		return nil, errOptionsLack("Session")
-	}
-
-	// check if client correct and save in cache
+	resp, err := rpcapi.CreateSession(c.Raw(), req, client.WithContext(ctx))
 	if err != nil {
-		return nil, err
+		return nil, errors.Wrap(err, "transport error")
 	}
 
-	opts.grpcOpts.v2SessionClient = cli
+	err = v2signature.VerifyServiceMessage(resp)
+	if err != nil {
+		return nil, errors.Wrap(err, "can't verify response message")
+	}
 
-	return cli, nil
-}
+	body := resp.GetBody()
+	if body == nil {
+		return nil, errMalformedResponseBody
+	}
 
-// AttachSessionToken attaches session token to client.
-//
-// Provided token is attached to all requests without WithSession option.
-// Use WithSession(nil) option in order to send request without session token.
-func (c *clientImpl) AttachSessionToken(token *token.SessionToken) {
-	c.sessionToken = token
-}
+	sessionToken := token.NewSessionToken()
+	sessionToken.SetID(body.GetID())
+	sessionToken.SetSessionKey(body.GetSessionKey())
+	sessionToken.SetOwnerID(ownerID)
 
-// AttachBearerToken attaches bearer token to client.
-//
-// Provided bearer is attached to all requests without WithBearer option.
-// Use WithBearer(nil) option in order to send request without bearer token.
-func (c *clientImpl) AttachBearerToken(token *token.BearerToken) {
-	c.bearerToken = token
+	return sessionToken, nil
 }