diff --git a/cloudflare/env.go b/cloudflare/env.go
index 85a28dd..82e8f48 100644
--- a/cloudflare/env.go
+++ b/cloudflare/env.go
@@ -2,6 +2,7 @@ package cloudflare
 
 import (
 	"context"
+	"syscall/js"
 
 	"github.com/syumai/workers/cloudflare/internal/cfruntimecontext"
 )
@@ -12,3 +13,10 @@ import (
 func Getenv(ctx context.Context, name string) string {
 	return cfruntimecontext.GetRuntimeContextEnv(ctx).Get(name).String()
 }
+
+// GetBinding gets a value of an environment binding.
+//   - https://developers.cloudflare.com/workers/platform/bindings/about-service-bindings/
+//   - This function panics when a runtime context is not found.
+func GetBinding(ctx context.Context, name string) js.Value {
+	return cfruntimecontext.GetRuntimeContextEnv(ctx).Get(name)
+}