diff --git a/callbacks/router.go b/callbacks/router.go
index 46f689b..243c1f2 100644
--- a/callbacks/router.go
+++ b/callbacks/router.go
@@ -12,6 +12,37 @@ When a host initiates the waPC engine, it can register a single function to hand
 The callbacks package provides a router that can be registered with the waPC engine. It enables
 routing host calls based on the Namespace, Capability, and Operation specified by the guest module.
 Hosts can extend many different capabilities to guest modules with the callback router.
+
+Usage:
+
+	// Create a new router
+	router, err := New(RouterConfig{})
+	if err != nil {
+		// do something
+	}
+	defer router.Close()
+
+	// Register the callback with the router
+	err = router.RegisterCallback(CallbackConfig{
+		Namespace:  "example",
+		Capability: "greeting",
+		Operation:  "hello",
+		Func: func(_ []byte) ([]byte, error) {
+			fmt.Println("Hello World!")
+			return []byte(""), nil
+		},
+	})
+	if err != nil {
+		// do something
+	}
+
+	// Register router with waPC engine
+	engine, err = engine.New(engine.ServerConfig{
+		Callback: router.Callback,
+	})
+	if err != nil {
+		// do something
+	}
 */
 package callbacks
 
diff --git a/engine/wasm.go b/engine/wasm.go
index 849b738..db6e0c4 100644
--- a/engine/wasm.go
+++ b/engine/wasm.go
@@ -15,6 +15,41 @@ Use this package if you have a Go application and want to enable extended functi
 
 Examples of use cases could be stored procedures within a database, serverless functions, or
 language-agnostic plugins.
+
+Usage:
+
+	import (
+		"github.com/tarmac-project/wapc-toolkit/engine"
+	)
+
+	func main() {
+		// Create a new engine server.
+		server, err := engine.New(ServerConfig{})
+		if err != nil {
+			// do something
+		}
+
+		// Load the guest module.
+		err = server.LoadModule(engine.ModuleConfig{
+			Name:     "my-guest-module",
+			Filepath: "./my-guest-module.wasm",
+		})
+		if err != nil {
+			// do something
+		}
+
+		// Lookup the guest module.
+		m, err := server.Module("my-guest-module")
+		if err != nil {
+			// do something
+		}
+
+		// Call the Hello function within the guest module.
+		rsp, err := m.Run("Hello", []byte("world"))
+		if err != nil {
+			// do something
+		}
+	}
 */
 package engine