diff --git a/api/event.go b/api/event.go
index 64db960c6c9500ed106d3b2c8ba0cad453575b34..33c647a358fe26f08afaabeff3f5d883a2082b8d 100644
--- a/api/event.go
+++ b/api/event.go
@@ -11,13 +11,11 @@ import (
 	"fmt"
 	"github.com/pkg/errors"
 	jww "github.com/spf13/jwalterweatherman"
+	"gitlab.com/elixxir/client/interfaces"
 	"gitlab.com/elixxir/client/stoppable"
 	"sync"
 )
 
-// EventCallbackFunction defines the callback functions for client event reports
-type EventCallbackFunction func(priority int, category, evtType, details string)
-
 // ReportableEvent is used to surface events to client users.
 type reportableEvent struct {
 	Priority  int
@@ -66,7 +64,7 @@ func (e *eventManager) ReportEvent(priority int, category, evtType,
 // ReportableEvent objects. It returns the internal index
 // of the callback so that it can be deleted later.
 func (e *eventManager) RegisterEventCallback(name string,
-	myFunc EventCallbackFunction) error {
+	myFunc interfaces.EventCallbackFunction) error {
 	_, existsAlready := e.eventCbs.LoadOrStore(name, myFunc)
 	if existsAlready {
 		return errors.Errorf("Key %s already exists as event callback",
@@ -103,7 +101,7 @@ func (e *eventManager) reportEventsHandler(stop *stoppable.Single) {
 			// the event queue explode. The API will report errors
 			// in the logging any time the event queue gets full.
 			e.eventCbs.Range(func(name, myFunc interface{}) bool {
-				f := myFunc.(EventCallbackFunction)
+				f := myFunc.(interfaces.EventCallbackFunction)
 				f(evt.Priority, evt.Category, evt.EventType,
 					evt.Details)
 				return true
@@ -122,7 +120,7 @@ func (c *Client) ReportEvent(priority int, category, evtType, details string) {
 // ReportableEvent objects. It returns the internal index
 // of the callback so that it can be deleted later.
 func (c *Client) RegisterEventCallback(name string,
-	myFunc EventCallbackFunction) error {
+	myFunc interfaces.EventCallbackFunction) error {
 	return c.events.RegisterEventCallback(name, myFunc)
 }
 
diff --git a/bindings/event.go b/bindings/event.go
index 95f32800a11fac5f252286b3bc22bebf26c557c3..7e28c72e025768a7dc454098e070d923c9832f2f 100644
--- a/bindings/event.go
+++ b/bindings/event.go
@@ -8,14 +8,14 @@
 package bindings
 
 import (
-	"gitlab.com/elixxir/client/api"
+	"gitlab.com/elixxir/client/interfaces"
 )
 
 // RegisterEventCallback records the given function to receive
 // ReportableEvent objects. It returns the internal index
 // of the callback so that it can be deleted later.
 func (c *Client) RegisterEventCallback(name string,
-	myFunc api.EventCallbackFunction) error {
+	myFunc interfaces.EventCallbackFunction) error {
 	return c.api.RegisterEventCallback(name, myFunc)
 }
 
diff --git a/interfaces/event.go b/interfaces/event.go
new file mode 100644
index 0000000000000000000000000000000000000000..0aba83b45cae650362d269e0b780c61c07a09238
--- /dev/null
+++ b/interfaces/event.go
@@ -0,0 +1,11 @@
+///////////////////////////////////////////////////////////////////////////////
+// Copyright © 2020 xx network SEZC                                          //
+//                                                                           //
+// Use of this source code is governed by a license that can be found in the //
+// LICENSE file                                                              //
+///////////////////////////////////////////////////////////////////////////////
+
+package interfaces
+
+// EventCallbackFunction defines the callback functions for client event reports
+type EventCallbackFunction func(priority int, category, evtType, details string)