diff --git a/internal/modifiers/attr_wrapper.go b/internal/modifiers/attr_wrapper.go
index b17f4b9..a6d277b 100644
--- a/internal/modifiers/attr_wrapper.go
+++ b/internal/modifiers/attr_wrapper.go
@@ -3,6 +3,8 @@ package modifiers
 import (
 	"context"
 	"database/sql/driver"
+
+	"github.com/vingarcia/ksql/kmodifiers"
 )
 
 // AttrScanWrapper is the wrapper that allow us to intercept the Scan process
@@ -15,8 +17,8 @@ type AttrScanWrapper struct {
 
 	AttrPtr interface{}
 
-	ScanFn AttrScanner
-	OpInfo OpInfo
+	ScanFn kmodifiers.AttrScanner
+	OpInfo kmodifiers.OpInfo
 }
 
 // Scan implements the sql.Scanner interface
@@ -34,8 +36,8 @@ type AttrValueWrapper struct {
 
 	Attr interface{}
 
-	ValueFn AttrValuer
-	OpInfo  OpInfo
+	ValueFn kmodifiers.AttrValuer
+	OpInfo  kmodifiers.OpInfo
 }
 
 // Value implements the sql.Valuer interface
diff --git a/internal/modifiers/attr_wrapper_test.go b/internal/modifiers/attr_wrapper_test.go
index a10d695..d712288 100644
--- a/internal/modifiers/attr_wrapper_test.go
+++ b/internal/modifiers/attr_wrapper_test.go
@@ -6,6 +6,7 @@ import (
 	"testing"
 
 	tt "github.com/vingarcia/ksql/internal/testtools"
+	"github.com/vingarcia/ksql/kmodifiers"
 )
 
 func TestAttrScanWrapper(t *testing.T) {
@@ -15,7 +16,7 @@ func TestAttrScanWrapper(t *testing.T) {
 	wrapper := AttrScanWrapper{
 		Ctx:     ctx,
 		AttrPtr: "fakeAttrPtr",
-		ScanFn: func(ctx context.Context, opInfo OpInfo, attrPtr interface{}, dbValue interface{}) error {
+		ScanFn: func(ctx context.Context, opInfo kmodifiers.OpInfo, attrPtr interface{}, dbValue interface{}) error {
 			scanArgs = map[string]interface{}{
 				"opInfo":  opInfo,
 				"attrPtr": attrPtr,
@@ -23,7 +24,7 @@ func TestAttrScanWrapper(t *testing.T) {
 			}
 			return errors.New("fakeScanErrMsg")
 		},
-		OpInfo: OpInfo{
+		OpInfo: kmodifiers.OpInfo{
 			Method:     "fakeMethod",
 			DriverName: "fakeDriverName",
 		},
@@ -32,7 +33,7 @@ func TestAttrScanWrapper(t *testing.T) {
 	err := wrapper.Scan("fakeDbValue")
 	tt.AssertErrContains(t, err, "fakeScanErrMsg")
 	tt.AssertEqual(t, scanArgs, map[string]interface{}{
-		"opInfo": OpInfo{
+		"opInfo": kmodifiers.OpInfo{
 			Method:     "fakeMethod",
 			DriverName: "fakeDriverName",
 		},
@@ -48,14 +49,14 @@ func TestAttrWrapper(t *testing.T) {
 	wrapper := AttrValueWrapper{
 		Ctx:  ctx,
 		Attr: "fakeAttr",
-		ValueFn: func(ctx context.Context, opInfo OpInfo, inputValue interface{}) (outputValue interface{}, _ error) {
+		ValueFn: func(ctx context.Context, opInfo kmodifiers.OpInfo, inputValue interface{}) (outputValue interface{}, _ error) {
 			valueArgs = map[string]interface{}{
 				"opInfo":     opInfo,
 				"inputValue": inputValue,
 			}
 			return "fakeOutputValue", errors.New("fakeValueErrMsg")
 		},
-		OpInfo: OpInfo{
+		OpInfo: kmodifiers.OpInfo{
 			Method:     "fakeMethod",
 			DriverName: "fakeDriverName",
 		},
@@ -64,7 +65,7 @@ func TestAttrWrapper(t *testing.T) {
 	value, err := wrapper.Value()
 	tt.AssertErrContains(t, err, "fakeValueErrMsg")
 	tt.AssertEqual(t, valueArgs, map[string]interface{}{
-		"opInfo": OpInfo{
+		"opInfo": kmodifiers.OpInfo{
 			Method:     "fakeMethod",
 			DriverName: "fakeDriverName",
 		},
diff --git a/internal/modifiers/global_modifiers.go b/internal/modifiers/global_modifiers.go
index 414f506..b77d986 100644
--- a/internal/modifiers/global_modifiers.go
+++ b/internal/modifiers/global_modifiers.go
@@ -3,12 +3,18 @@ package modifiers
 import (
 	"fmt"
 	"sync"
+
+	"github.com/vingarcia/ksql/kmodifiers"
 )
 
 // Here we keep all the registered modifiers
 var modifiers sync.Map
 
 func init() {
+	// Here we expose the registration function in a public package,
+	// so users can use it:
+	kmodifiers.RegisterAttrModifier = RegisterAttrModifier
+
 	// These are the builtin modifiers:
 
 	// This one is useful for serializing/desserializing structs:
@@ -27,7 +33,7 @@ func init() {
 
 // RegisterAttrModifier allow users to add custom modifiers on startup
 // it is recommended to do this inside an init() function.
-func RegisterAttrModifier(key string, modifier AttrModifier) {
+func RegisterAttrModifier(key string, modifier kmodifiers.AttrModifier) {
 	_, found := modifiers.Load(key)
 	if found {
 		panic(fmt.Errorf("KSQL: cannot register modifier '%s' name is already in use", key))
@@ -38,11 +44,11 @@ func RegisterAttrModifier(key string, modifier AttrModifier) {
 
 // LoadGlobalModifier is used internally by KSQL to load
 // modifiers during runtime.
-func LoadGlobalModifier(key string) (AttrModifier, error) {
+func LoadGlobalModifier(key string) (kmodifiers.AttrModifier, error) {
 	rawModifier, _ := modifiers.Load(key)
-	modifier, ok := rawModifier.(AttrModifier)
+	modifier, ok := rawModifier.(kmodifiers.AttrModifier)
 	if !ok {
-		return AttrModifier{}, fmt.Errorf("no modifier found with name '%s'", key)
+		return kmodifiers.AttrModifier{}, fmt.Errorf("no modifier found with name '%s'", key)
 	}
 
 	return modifier, nil
diff --git a/internal/modifiers/global_modifiers_test.go b/internal/modifiers/global_modifiers_test.go
index b1d3b1d..9f68368 100644
--- a/internal/modifiers/global_modifiers_test.go
+++ b/internal/modifiers/global_modifiers_test.go
@@ -4,14 +4,15 @@ import (
 	"testing"
 
 	tt "github.com/vingarcia/ksql/internal/testtools"
+	"github.com/vingarcia/ksql/kmodifiers"
 )
 
 func TestRegisterAttrModifier(t *testing.T) {
 	t.Run("should register new modifiers correctly", func(t *testing.T) {
-		modifier1 := AttrModifier{
+		modifier1 := kmodifiers.AttrModifier{
 			SkipOnUpdate: true,
 		}
-		modifier2 := AttrModifier{
+		modifier2 := kmodifiers.AttrModifier{
 			SkipOnInsert: true,
 		}
 
@@ -28,10 +29,10 @@ func TestRegisterAttrModifier(t *testing.T) {
 	})
 
 	t.Run("should panic registering a modifier and the name already exists", func(t *testing.T) {
-		modifier1 := AttrModifier{
+		modifier1 := kmodifiers.AttrModifier{
 			SkipOnUpdate: true,
 		}
-		modifier2 := AttrModifier{
+		modifier2 := kmodifiers.AttrModifier{
 			SkipOnInsert: true,
 		}
 
@@ -48,6 +49,6 @@ func TestRegisterAttrModifier(t *testing.T) {
 	t.Run("should return an error when loading an inexistent modifier", func(t *testing.T) {
 		mod, err := LoadGlobalModifier("nonExistentModifier")
 		tt.AssertErrContains(t, err, "nonExistentModifier")
-		tt.AssertEqual(t, mod, AttrModifier{})
+		tt.AssertEqual(t, mod, kmodifiers.AttrModifier{})
 	})
 }
diff --git a/internal/modifiers/json_modifier.go b/internal/modifiers/json_modifier.go
index 8cb6b8c..0574bb7 100644
--- a/internal/modifiers/json_modifier.go
+++ b/internal/modifiers/json_modifier.go
@@ -4,13 +4,15 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+
+	"github.com/vingarcia/ksql/kmodifiers"
 )
 
 // This modifier serializes objects as JSON when
 // sending it to the database and decodes
 // them when receiving.
-var jsonModifier = AttrModifier{
-	Scan: func(ctx context.Context, opInfo OpInfo, attrPtr interface{}, dbValue interface{}) error {
+var jsonModifier = kmodifiers.AttrModifier{
+	Scan: func(ctx context.Context, opInfo kmodifiers.OpInfo, attrPtr interface{}, dbValue interface{}) error {
 		if dbValue == nil {
 			return nil
 		}
@@ -27,7 +29,7 @@ var jsonModifier = AttrModifier{
 		return json.Unmarshal(rawJSON, attrPtr)
 	},
 
-	Value: func(ctx context.Context, opInfo OpInfo, inputValue interface{}) (outputValue interface{}, _ error) {
+	Value: func(ctx context.Context, opInfo kmodifiers.OpInfo, inputValue interface{}) (outputValue interface{}, _ error) {
 		b, err := json.Marshal(inputValue)
 		// SQL server uses the NVARCHAR type to store JSON and
 		// it expects to receive strings not []byte, thus:
diff --git a/internal/modifiers/json_modifier_test.go b/internal/modifiers/json_modifier_test.go
index a53f56c..110f440 100644
--- a/internal/modifiers/json_modifier_test.go
+++ b/internal/modifiers/json_modifier_test.go
@@ -5,6 +5,7 @@ import (
 	"testing"
 
 	tt "github.com/vingarcia/ksql/internal/testtools"
+	"github.com/vingarcia/ksql/kmodifiers"
 )
 
 func TestAttrScan(t *testing.T) {
@@ -53,7 +54,7 @@ func TestAttrScan(t *testing.T) {
 			fakeAttr := FakeAttr{
 				Foo: "notZeroValue",
 			}
-			err := jsonModifier.Scan(ctx, OpInfo{}, &fakeAttr, test.dbInput)
+			err := jsonModifier.Scan(ctx, kmodifiers.OpInfo{}, &fakeAttr, test.dbInput)
 			if test.expectErrToContain != nil {
 				tt.AssertErrContains(t, err, test.expectErrToContain...)
 				t.Skip()
@@ -75,7 +76,7 @@ func TestAttrValue(t *testing.T) {
 	tests := []struct {
 		desc        string
 		dbInput     interface{}
-		opInfoInput OpInfo
+		opInfoInput kmodifiers.OpInfo
 		attrValue   interface{}
 
 		expectedOutput     interface{}
@@ -84,7 +85,7 @@ func TestAttrValue(t *testing.T) {
 		{
 			desc:    "should return a byte array when the driver is not sqlserver",
 			dbInput: []byte(`{"foo":"bar"}`),
-			opInfoInput: OpInfo{
+			opInfoInput: kmodifiers.OpInfo{
 				DriverName: "notSQLServer",
 			},
 			attrValue: FakeAttr{
@@ -97,7 +98,7 @@ func TestAttrValue(t *testing.T) {
 		{
 			desc:    "should return a string when the driver is sqlserver",
 			dbInput: []byte(`{"foo":"bar"}`),
-			opInfoInput: OpInfo{
+			opInfoInput: kmodifiers.OpInfo{
 				DriverName: "sqlserver",
 			},
 			attrValue: FakeAttr{
diff --git a/internal/modifiers/skip_modifiers.go b/internal/modifiers/skip_modifiers.go
index e7e1135..89d8ce7 100644
--- a/internal/modifiers/skip_modifiers.go
+++ b/internal/modifiers/skip_modifiers.go
@@ -1,9 +1,11 @@
 package modifiers
 
-var skipInsertsModifier = AttrModifier{
+import "github.com/vingarcia/ksql/kmodifiers"
+
+var skipInsertsModifier = kmodifiers.AttrModifier{
 	SkipOnInsert: true,
 }
 
-var skipUpdatesModifier = AttrModifier{
+var skipUpdatesModifier = kmodifiers.AttrModifier{
 	SkipOnUpdate: true,
 }
diff --git a/internal/modifiers/time_modifiers.go b/internal/modifiers/time_modifiers.go
index 171060c..abbbc62 100644
--- a/internal/modifiers/time_modifiers.go
+++ b/internal/modifiers/time_modifiers.go
@@ -3,20 +3,22 @@ package modifiers
 import (
 	"context"
 	"time"
+
+	"github.com/vingarcia/ksql/kmodifiers"
 )
 
 // This one is useful for updatedAt timestamps
-var timeNowUTCModifier = AttrModifier{
-	Value: func(ctx context.Context, opInfo OpInfo, inputValue interface{}) (outputValue interface{}, _ error) {
+var timeNowUTCModifier = kmodifiers.AttrModifier{
+	Value: func(ctx context.Context, opInfo kmodifiers.OpInfo, inputValue interface{}) (outputValue interface{}, _ error) {
 		return time.Now().UTC(), nil
 	},
 }
 
 // This one is useful for createdAt timestamps
-var timeNowUTCSkipUpdatesModifier = AttrModifier{
+var timeNowUTCSkipUpdatesModifier = kmodifiers.AttrModifier{
 	SkipOnUpdate: true,
 
-	Value: func(ctx context.Context, opInfo OpInfo, inputValue interface{}) (outputValue interface{}, _ error) {
+	Value: func(ctx context.Context, opInfo kmodifiers.OpInfo, inputValue interface{}) (outputValue interface{}, _ error) {
 		return time.Now().UTC(), nil
 	},
 }
diff --git a/internal/structs/structs.go b/internal/structs/structs.go
index 356c528..b7ecdc0 100644
--- a/internal/structs/structs.go
+++ b/internal/structs/structs.go
@@ -7,6 +7,7 @@ import (
 	"sync"
 
 	"github.com/vingarcia/ksql/internal/modifiers"
+	"github.com/vingarcia/ksql/kmodifiers"
 )
 
 // StructInfo stores metainformation of the struct
@@ -25,7 +26,7 @@ type FieldInfo struct {
 	Name     string
 	Index    int
 	Valid    bool
-	Modifier modifiers.AttrModifier
+	Modifier kmodifiers.AttrModifier
 }
 
 // ByIndex returns either the *FieldInfo of a valid
@@ -251,7 +252,7 @@ func getTagNames(t reflect.Type) (_ StructInfo, err error) {
 		}
 
 		tags := strings.Split(name, ",")
-		var modifier modifiers.AttrModifier
+		var modifier kmodifiers.AttrModifier
 		if len(tags) > 1 {
 			name = tags[0]
 			modifier, err = modifiers.LoadGlobalModifier(tags[1])
diff --git a/internal/modifiers/contract.go b/kmodifiers/attr_modifier.go
similarity index 96%
rename from internal/modifiers/contract.go
rename to kmodifiers/attr_modifier.go
index dda135e..0f07838 100644
--- a/internal/modifiers/contract.go
+++ b/kmodifiers/attr_modifier.go
@@ -1,8 +1,6 @@
-package modifiers
+package kmodifiers
 
-import (
-	"context"
-)
+import "context"
 
 // AttrModifier informs KSQL how to use this modifier
 type AttrModifier struct {
diff --git a/kmodifiers/register_new_modifier.go b/kmodifiers/register_new_modifier.go
new file mode 100644
index 0000000..b909903
--- /dev/null
+++ b/kmodifiers/register_new_modifier.go
@@ -0,0 +1,9 @@
+package kmodifiers
+
+// RegisterAttrModifier allow users to add custom modifiers on startup
+// it is recommended to do this inside an init() function.
+var RegisterAttrModifier func(key string, modifier AttrModifier)
+
+// This method is set at startup by the `internal/modifiers` package.
+// It was done that way in order to keep most of the implementation private
+// while also avoiding cyclic dependencies.
diff --git a/ksql.go b/ksql.go
index a346b25..e1f7555 100644
--- a/ksql.go
+++ b/ksql.go
@@ -12,6 +12,7 @@ import (
 
 	"github.com/vingarcia/ksql/internal/modifiers"
 	"github.com/vingarcia/ksql/internal/structs"
+	"github.com/vingarcia/ksql/kmodifiers"
 	"github.com/vingarcia/ksql/ksqltest"
 )
 
@@ -728,7 +729,7 @@ func buildInsertQuery(
 				Ctx:     ctx,
 				Attr:    recordValue,
 				ValueFn: valueFn,
-				OpInfo: modifiers.OpInfo{
+				OpInfo: kmodifiers.OpInfo{
 					DriverName: dialect.DriverName(),
 					Method:     "Insert",
 				},
@@ -857,7 +858,7 @@ func buildUpdateQuery(
 				Ctx:     ctx,
 				Attr:    recordValue,
 				ValueFn: valueFn,
-				OpInfo: modifiers.OpInfo{
+				OpInfo: kmodifiers.OpInfo{
 					DriverName: dialect.DriverName(),
 					Method:     "Update",
 				},
@@ -1063,7 +1064,7 @@ func getScanArgsForNestedStructs(
 						Ctx:     ctx,
 						AttrPtr: valueScanner,
 						ScanFn:  fieldInfo.Modifier.Scan,
-						OpInfo: modifiers.OpInfo{
+						OpInfo: kmodifiers.OpInfo{
 							DriverName: dialect.DriverName(),
 							// We will not differentiate between Query, QueryOne and QueryChunks
 							// if we did this could lead users to make very strange modifiers
@@ -1093,7 +1094,7 @@ func getScanArgsFromNames(ctx context.Context, dialect Dialect, names []string,
 					Ctx:     ctx,
 					AttrPtr: valueScanner,
 					ScanFn:  fieldInfo.Modifier.Scan,
-					OpInfo: modifiers.OpInfo{
+					OpInfo: kmodifiers.OpInfo{
 						DriverName: dialect.DriverName(),
 						// We will not differentiate between Query, QueryOne and QueryChunks
 						// if we did this could lead users to make very strange modifiers
diff --git a/test_adapters.go b/test_adapters.go
index c0b9d11..7e485d3 100644
--- a/test_adapters.go
+++ b/test_adapters.go
@@ -11,6 +11,7 @@ import (
 
 	"github.com/vingarcia/ksql/internal/modifiers"
 	tt "github.com/vingarcia/ksql/internal/testtools"
+	"github.com/vingarcia/ksql/kmodifiers"
 	"github.com/vingarcia/ksql/nullable"
 )
 
@@ -3335,7 +3336,7 @@ func getUserByID(db DBAdapter, dialect Dialect, result *user, id uint) error {
 		Ctx:     context.TODO(),
 		AttrPtr: &result.Address,
 		ScanFn:  modifier.Scan,
-		OpInfo: modifiers.OpInfo{
+		OpInfo: kmodifiers.OpInfo{
 			DriverName: dialect.DriverName(),
 			// We will not differentiate between Query, QueryOne and QueryChunks
 			// if we did this could lead users to make very strange modifiers