diff --git a/client.go b/client.go
index 53f96d9..0fa055b 100644
--- a/client.go
+++ b/client.go
@@ -3,23 +3,21 @@ package monobank
 // TODO: add HTTP retry
 
 import (
-	"context"
-	"encoding/json"
-	"io"
 	"net/http"
 	"net/url"
-	"time"
 
 	"github.com/pkg/errors"
+	"github.com/vtopc/go-rest"
+	"github.com/vtopc/go-rest/defaults"
+	"github.com/vtopc/go-rest/interceptors"
 )
 
 const (
-	baseURL        = "https://api.monobank.ua"
-	defaultTimeout = 30 * time.Second
+	baseURL = "https://api.monobank.ua"
 )
 
 type Client struct {
-	httpClient *http.Client
+	restClient *rest.Client
 	auth       Authorizer
 	baseURL    string // TODO: switch to url.URL
 }
@@ -29,14 +27,14 @@ type Client struct {
 // NewClient - returns public monobank Client
 func NewClient(client *http.Client) Client {
 	if client == nil {
-		// defaults
-		client = &http.Client{
-			Timeout: defaultTimeout,
-		}
+		client = defaults.NewHTTPClient()
 	}
 
+	_ = interceptors.SetReqContentType(client, "application/json")
+	c := rest.NewClient(client)
+
 	return Client{
-		httpClient: client,
+		restClient: c,
 		auth:       NewPublicAuthorizer(),
 		baseURL:    baseURL,
 	}
@@ -54,9 +52,7 @@ func (c *Client) withAuth(auth Authorizer) {
 // do does request.
 // Stores JSON response in the value pointed to by v.
 // TODO: make expectedStatusCode a slice:
-func (c Client) do(ctx context.Context, req *http.Request, v interface{}, expectedStatusCode int) error {
-	// TODO: check that `v` is a pointer or nil
-
+func (c Client) do(req *http.Request, v interface{}, expectedStatusCode int) error {
 	if req == nil {
 		return errors.New("empty request")
 	}
@@ -67,59 +63,16 @@ func (c Client) do(ctx context.Context, req *http.Request, v interface{}, expect
 		return errors.Wrap(err, "failed to build URL")
 	}
 
-	req = req.WithContext(ctx)
-
 	if c.auth != nil { // TODO: return an error if not
 		err = c.auth.SetAuth(req)
 		if err != nil {
-			return NewReqError(req, errors.Wrap(err, "SetAuth"))
+			return errors.Wrap(err, "SetAuth")
 		}
 	}
 
-	if req.Body != nil {
-		req.Header.Set("Content-Type", "application/json")
-	}
-
-	err = func() error {
-		resp, e := c.httpClient.Do(req)
-		if e != nil {
-			return e
-		}
-
-		defer resp.Body.Close()
-
-		var body []byte
-		if v != nil {
-			body, e = io.ReadAll(resp.Body)
-			if e != nil {
-				return errors.Wrap(e, "couldn't read the body")
-			}
-		}
-
-		// TODO: switch to "for" for multi-status:
-		if resp.StatusCode == expectedStatusCode {
-			if v == nil {
-				// nothing to unmarshal
-				return nil
-			}
-
-			e = json.Unmarshal(body, v)
-			if e == nil {
-				return nil
-			}
-
-			return errors.Wrap(e, "failed to unmarshal the response body")
-		}
-
-		// otherwise, non expected status code:
-		return &APIError{
-			ResponseStatusCode:  resp.StatusCode,
-			ExpectedStatusCodes: []int{expectedStatusCode},
-			Err:                 errors.New(string(body)),
-		}
-	}()
+	err = c.restClient.Do(req, v, expectedStatusCode)
 	if err != nil {
-		return NewReqError(req, err)
+		return err
 	}
 
 	return nil
diff --git a/client_test.go b/client_test.go
index a1e7481..f337461 100644
--- a/client_test.go
+++ b/client_test.go
@@ -1,7 +1,6 @@
 package monobank
 
 import (
-	"context"
 	"net/http"
 	"net/http/httptest"
 	"strings"
@@ -9,6 +8,7 @@ import (
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+	"github.com/vtopc/go-rest"
 )
 
 func TestClient_do(t *testing.T) {
@@ -45,14 +45,14 @@ func TestClient_do(t *testing.T) {
 
 			c := Client{
 				baseURL:    server.URL,
-				httpClient: server.Client(),
+				restClient: rest.NewClient(server.Client()),
 			}
 
 			req, err := http.NewRequest(tc.method, tc.urlPostfix, http.NoBody)
 			require.NoError(t, err)
 
 			// test:
-			err = c.do(context.Background(), req, &tc.v, tc.expectedStatusCode)
+			err = c.do(req, &tc.v, tc.expectedStatusCode)
 			require.NoError(t, err)
 			assert.Equal(t, tc.want, tc.v)
 		})
diff --git a/codecov.yml b/codecov.yml
new file mode 100644
index 0000000..69cb760
--- /dev/null
+++ b/codecov.yml
@@ -0,0 +1 @@
+comment: false
diff --git a/common.go b/common.go
index eaf8657..2c9bfdb 100644
--- a/common.go
+++ b/common.go
@@ -32,13 +32,13 @@ func newCommonClient(client *http.Client) commonClient {
 func (c commonClient) ClientInfo(ctx context.Context) (*ClientInfo, error) {
 	const urlPath = "/personal/client-info"
 
-	req, err := http.NewRequest(http.MethodGet, urlPath, http.NoBody)
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, urlPath, http.NoBody)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to create request")
 	}
 
 	var v ClientInfo
-	err = c.do(ctx, req, &v, http.StatusOK)
+	err = c.do(req, &v, http.StatusOK)
 
 	return &v, err
 }
@@ -50,13 +50,13 @@ func (c commonClient) Transactions(ctx context.Context, accountID string, from,
 	const urlPath = "/personal/statement"
 	uri := fmt.Sprintf("%s/%s/%d/%d", urlPath, accountID, from.Unix(), to.Unix())
 
-	req, err := http.NewRequest(http.MethodGet, uri, http.NoBody)
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, uri, http.NoBody)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to create request")
 	}
 
 	var v Transactions
-	err = c.do(ctx, req, &v, http.StatusOK)
+	err = c.do(req, &v, http.StatusOK)
 
 	return v, err
 }
@@ -68,10 +68,10 @@ func (c commonClient) setWebHook(ctx context.Context, uri, urlPath string) error
 		return errors.Wrap(err, "failed to marshal")
 	}
 
-	req, err := http.NewRequest(http.MethodPost, urlPath, &buf)
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, urlPath, &buf)
 	if err != nil {
 		return errors.Wrap(err, "failed to create request")
 	}
 
-	return c.do(ctx, req, nil, http.StatusOK)
+	return c.do(req, nil, http.StatusOK)
 }
diff --git a/corporate.go b/corporate.go
index a6863de..c7fe1a8 100644
--- a/corporate.go
+++ b/corporate.go
@@ -53,7 +53,7 @@ func NewCorporateClient(client *http.Client, authMaker CorpAuthMakerAPI) (Corpor
 
 // Auth initializes access.
 func (c CorporateClient) Auth(ctx context.Context, callbackURL string, permissions ...string) (*TokenRequest, error) {
-	req, err := http.NewRequest(http.MethodPost, urlPathAuth, http.NoBody)
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, urlPathAuth, http.NoBody)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to create request")
 	}
@@ -63,20 +63,20 @@ func (c CorporateClient) Auth(ctx context.Context, callbackURL string, permissio
 	authClient := c.withAuth(c.authMaker.NewPermissions(permissions...))
 
 	var v TokenRequest
-	err = authClient.commonClient.do(ctx, req, &v, http.StatusOK)
+	err = authClient.commonClient.do(req, &v, http.StatusOK)
 
 	return &v, err
 }
 
 func (c CorporateClient) CheckAuth(ctx context.Context, requestID string) error {
-	req, err := http.NewRequest(http.MethodGet, urlPathAuth, http.NoBody)
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, urlPathAuth, http.NoBody)
 	if err != nil {
 		return errors.Wrap(err, "failed to create request")
 	}
 
 	authClient := c.withAuth(c.authMaker.New(requestID))
 
-	return authClient.do(ctx, req, nil, http.StatusOK)
+	return authClient.do(req, nil, http.StatusOK)
 }
 
 // SetWebHook sets webhook for corporate API.
diff --git a/go.mod b/go.mod
index ece3982..bc86ee2 100644
--- a/go.mod
+++ b/go.mod
@@ -5,6 +5,7 @@ go 1.16
 require (
 	github.com/decred/dcrd/dcrec/secp256k1/v2 v2.0.0
 	github.com/pkg/errors v0.9.1
-	github.com/stretchr/testify v1.4.0
+	github.com/stretchr/testify v1.7.0
 	github.com/vtopc/epoch v1.0.0
+	github.com/vtopc/go-rest v0.2.0
 )
diff --git a/go.sum b/go.sum
index aeeee11..f9cf421 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,3 @@
-github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -8,18 +7,21 @@ github.com/decred/dcrd/crypto/blake256 v1.0.0 h1:/8DMNYp9SGi5f0w7uCm6d6M4OU2rGFK
 github.com/decred/dcrd/crypto/blake256 v1.0.0/go.mod h1:sQl2p6Y26YV+ZOcSTP6thNdn47hh8kt6rqSlvmrXFAc=
 github.com/decred/dcrd/dcrec/secp256k1/v2 v2.0.0 h1:3GIJYXQDAKpLEFriGFN8SbSffak10UXHGdIcFaMPykY=
 github.com/decred/dcrd/dcrec/secp256k1/v2 v2.0.0/go.mod h1:3s92l0paYkZoIHuj4X93Teg/HB7eGM9x/zokGw+u4mY=
-github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
+github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/vtopc/epoch v1.0.0 h1:C9lSFt9DC/J0YlW3Eheq4vBBi0pk2hjC8XFb3indWlw=
 github.com/vtopc/epoch v1.0.0/go.mod h1:/jzmj/iiCMyAiIk3T6RGPUpMpPSjUJDG2Yu7FzfEt8U=
+github.com/vtopc/go-rest v0.2.0 h1:ZdNndlwzk1NjWbKf8yHGo8Bn1DRolWAtuPbIBvAVN5k=
+github.com/vtopc/go-rest v0.2.0/go.mod h1:t7XPUz57Z+U66vsVIjEm89Uw/NZf486JVAFhq6+mZps=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/public.go b/public.go
index f16208f..cb7b17b 100644
--- a/public.go
+++ b/public.go
@@ -15,13 +15,13 @@ type PublicAPI interface {
 func (c Client) Currency(ctx context.Context) (Currencies, error) {
 	const urlPath = "/bank/currency"
 
-	req, err := http.NewRequest(http.MethodGet, urlPath, http.NoBody)
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, urlPath, http.NoBody)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to create request")
 	}
 
 	var v Currencies
-	err = c.do(ctx, req, &v, http.StatusOK)
+	err = c.do(req, &v, http.StatusOK)
 
 	return v, err
 }