diff --git a/codec_test.go b/codec_test.go
index fc1ecf5..55a67fc 100644
--- a/codec_test.go
+++ b/codec_test.go
@@ -18,7 +18,7 @@ func TestStructByTag(t *testing.T) {
 		t.Fatal(err)
 	}
 	if !bytes.Equal(buf, []byte(`["first","second"]`)) {
-		t.Fatalf("invalid marshal: %s", buf)
+		t.Fatalf("invalid marshal: %v != %v", buf, []byte(`["first","second"]`))
 	}
 
 	err = c.Unmarshal([]byte(`["1","2"]`), val)
@@ -29,7 +29,6 @@ func TestStructByTag(t *testing.T) {
 	if len(val.Name) != 2 {
 		t.Fatalf("invalid unmarshal: %v", val)
 	}
-
 }
 
 func TestReadBody(t *testing.T) {
diff --git a/go.mod b/go.mod
index c49ac7b..068fd34 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,4 @@ module github.com/unistack-org/micro-codec-json/v3
 
 go 1.16
 
-require github.com/unistack-org/micro/v3 v3.7.1
+require github.com/unistack-org/micro/v3 v3.7.3
diff --git a/go.sum b/go.sum
index 53cb460..18df2a3 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,3 @@
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/ef-ds/deque v1.0.4/go.mod h1:gXDnTC3yqvBcHbq2lcExjtAcVrOnJCbMcZXmuj8Z4tg=
 github.com/golang-jwt/jwt/v4 v4.0.0/go.mod h1:/xlHOz8bRuivTWchD4jCa+NbatV+wEUSzwAxVc6locg=
 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
@@ -6,14 +5,11 @@ github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/imdario/mergo v0.3.12/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
 github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/silas/dag v0.0.0-20210121180416-41cf55125c34/go.mod h1:7RTUFBdIRC9nZ7/3RyRNH1bdqIShrDejd1YbLwgPS+I=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/unistack-org/micro-proto v0.0.9 h1:KrWLS4FUX7UAWNAilQf70uad6ZPf/0EudeddCXllRVc=
 github.com/unistack-org/micro-proto v0.0.9/go.mod h1:Cckwmzd89gvS7ThxzZp9kQR/EOdksFQcsTAtDDyKwrg=
-github.com/unistack-org/micro/v3 v3.7.1 h1:gjCon1U8i9upNgw9+iEgbZh2LCeBizDYotQ+THHV0lo=
-github.com/unistack-org/micro/v3 v3.7.1/go.mod h1:gBoY6gvzeFiJTZ4FgDttGNSs4Y1+1PRg2cV1yTRMSlg=
+github.com/unistack-org/micro/v3 v3.7.3 h1:7dCv7WuTYp47jZ/doVCXDNMnY75imprbmwSnmchTSJY=
+github.com/unistack-org/micro/v3 v3.7.3/go.mod h1:78vy7ggElJD+ayx8ruhJsY+SkGUupfR32LXrg1UObvg=
 golang.org/x/net v0.0.0-20210510120150-4163338589ed/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -27,4 +23,3 @@ google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+Rur
 google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/json.go b/json.go
index 94e7e96..3d66bae 100644
--- a/json.go
+++ b/json.go
@@ -2,6 +2,7 @@
 package json
 
 import (
+	"bytes"
 	"encoding/json"
 	"io"
 
@@ -9,13 +10,35 @@ import (
 	rutil "github.com/unistack-org/micro/v3/util/reflect"
 )
 
-type jsonCodec struct{}
+var (
+	DefaultMarshalOptions = JsonMarshalOptions{
+		EscapeHTML: true,
+	}
+
+	DefaultUnmarshalOptions = JsonUnmarshalOptions{
+		DisallowUnknownFields: false,
+		UseNumber:             false,
+	}
+)
+
+type JsonMarshalOptions struct {
+	EscapeHTML bool
+}
+
+type JsonUnmarshalOptions struct {
+	DisallowUnknownFields bool
+	UseNumber             bool
+}
+
+type jsonCodec struct {
+	opts codec.Options
+}
 
 const (
 	flattenTag = "flatten"
 )
 
-func (c *jsonCodec) Marshal(v interface{}) ([]byte, error) {
+func (c *jsonCodec) Marshal(v interface{}, opts ...codec.Option) ([]byte, error) {
 	if v == nil {
 		return nil, nil
 	}
@@ -24,14 +47,35 @@ func (c *jsonCodec) Marshal(v interface{}) ([]byte, error) {
 		return m.Data, nil
 	}
 
-	if nv, err := rutil.StructFieldByTag(v, codec.DefaultTagName, flattenTag); err == nil {
+	options := c.opts
+	for _, o := range opts {
+		o(&options)
+	}
+
+	if nv, err := rutil.StructFieldByTag(v, options.TagName, flattenTag); err == nil {
 		v = nv
 	}
 
+	marshalOptions := DefaultMarshalOptions
+	if c.opts.Context != nil {
+		if f, ok := c.opts.Context.Value(marshalOptionsKey{}).(JsonMarshalOptions); ok {
+			marshalOptions = f
+		}
+	}
+
+	if !marshalOptions.EscapeHTML {
+		w := bytes.NewBuffer(nil)
+		enc := json.NewEncoder(w)
+		enc.SetEscapeHTML(marshalOptions.EscapeHTML)
+		err := enc.Encode(v)
+		buf := w.Bytes()
+		return buf[:len(buf)-1], err
+	}
+
 	return json.Marshal(v)
 }
 
-func (c *jsonCodec) Unmarshal(b []byte, v interface{}) error {
+func (c *jsonCodec) Unmarshal(b []byte, v interface{}, opts ...codec.Option) error {
 	if len(b) == 0 || v == nil {
 		return nil
 	}
@@ -41,10 +85,34 @@ func (c *jsonCodec) Unmarshal(b []byte, v interface{}) error {
 		return nil
 	}
 
-	if nv, err := rutil.StructFieldByTag(v, codec.DefaultTagName, flattenTag); err == nil {
+	options := c.opts
+	for _, o := range opts {
+		o(&options)
+	}
+
+	if nv, err := rutil.StructFieldByTag(v, options.TagName, flattenTag); err == nil {
 		v = nv
 	}
 
+	unmarshalOptions := DefaultUnmarshalOptions
+	if c.opts.Context != nil {
+		if f, ok := c.opts.Context.Value(unmarshalOptionsKey{}).(JsonUnmarshalOptions); ok {
+			unmarshalOptions = f
+		}
+	}
+
+	if unmarshalOptions.DisallowUnknownFields || unmarshalOptions.UseNumber {
+		dec := json.NewDecoder(bytes.NewBuffer(b))
+		if unmarshalOptions.DisallowUnknownFields {
+			dec.DisallowUnknownFields()
+		}
+		if unmarshalOptions.UseNumber {
+			dec.UseNumber()
+		}
+
+		return dec.Decode(v)
+	}
+
 	return json.Unmarshal(b, v)
 }
 
@@ -88,6 +156,6 @@ func (c *jsonCodec) String() string {
 	return "json"
 }
 
-func NewCodec() codec.Codec {
-	return &jsonCodec{}
+func NewCodec(opts ...codec.Option) codec.Codec {
+	return &jsonCodec{opts: codec.NewOptions(opts...)}
 }
diff --git a/options.go b/options.go
new file mode 100644
index 0000000..08f0f51
--- /dev/null
+++ b/options.go
@@ -0,0 +1,17 @@
+package json
+
+import (
+	codec "github.com/unistack-org/micro/v3/codec"
+)
+
+type unmarshalOptionsKey struct{}
+
+func UnmarshalOptions(o JsonUnmarshalOptions) codec.Option {
+	return codec.SetOption(unmarshalOptionsKey{}, o)
+}
+
+type marshalOptionsKey struct{}
+
+func MarshalOptions(o JsonUnmarshalOptions) codec.Option {
+	return codec.SetOption(marshalOptionsKey{}, o)
+}