diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 0000000..e523385
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,26 @@
+import { ConstructorOptions } from "logdna";
+import Transport from "winston-transport";
+
+declare class LogDNATransport extends Transport {
+  constructor(options: LogDNATransport.TransportOptions);
+}
+
+declare namespace LogDNATransport {
+  interface TransportOptions
+    extends Transport.TransportStreamOptions,
+      ConstructorOptions {
+    /** The LogDNA API key. */
+    key: string;
+    /** The name of this transport (default: "LogDNA"). */
+    name?: string;
+    /** Level of messages that this transport should log (default: "debug"). */
+    level?: string;
+    /**
+     * Allow meta objects to be passed with each line (default: false).
+     * See logger ConstructorOptions for more information.
+     */
+    index_meta?: boolean;
+  }
+}
+
+export = LogDNATransport;