diff --git a/ok.go b/ok.go
new file mode 100644
index 0000000..921e6e9
--- /dev/null
+++ b/ok.go
@@ -0,0 +1,20 @@
+package mstdn
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+func OK(resp http.ResponseWriter, value interface{}) {
+	if nil == resp {
+		return
+	}
+
+	resp.WriteHeader(http.StatusOK)
+	resp.Header().Add("Content-Type", "application/json; charset=utf-8")
+
+	err := json.NewEncoder(resp).Encode(value)
+	if nil != err {
+		// Nothing here.
+	}
+}