diff --git a/types/sasl-external/index.d.ts b/types/sasl-external/index.d.ts
new file mode 100644
index 0000000000..06a90ce3a4
--- /dev/null
+++ b/types/sasl-external/index.d.ts
@@ -0,0 +1,29 @@
+// Type definitions for sasl-external 0.1
+// Project: https://github.com/jaredhanson/js-sasl-external
+// Definitions by: BendingBender <https://github.com/BendingBender>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+import { Mechanism } from 'saslmechanisms';
+
+export = ExternalMechanism;
+
+declare class ExternalMechanism implements Mechanism {
+    static Mechanism: typeof ExternalMechanism;
+    static prototype: {
+        name: 'EXTERNAL';
+        clientFirst: true;
+    };
+
+    name: 'EXTERNAL';
+    clientFirst: true;
+
+    response(cred: ExternalMechanism.Credentials): string;
+
+    challenge(chal: string): void;
+}
+
+declare namespace ExternalMechanism {
+    interface Credentials {
+        authzid?: string;
+    }
+}
diff --git a/types/sasl-external/sasl-external-tests.ts b/types/sasl-external/sasl-external-tests.ts
new file mode 100644
index 0000000000..919721aec5
--- /dev/null
+++ b/types/sasl-external/sasl-external-tests.ts
@@ -0,0 +1,22 @@
+import ExternalMechanism = require('sasl-external');
+import { Mechanism } from 'sasl-external';
+import { Factory } from 'saslmechanisms';
+
+new Factory().use(ExternalMechanism);
+new Factory().use(Mechanism);
+
+// $ExpectType "EXTERNAL"
+ExternalMechanism.prototype.name;
+// $ExpectType true
+ExternalMechanism.prototype.clientFirst;
+
+const m = new ExternalMechanism();
+
+// $ExpectType "EXTERNAL"
+m.name;
+// $ExpectType true
+m.clientFirst;
+// $ExpectType string
+m.response({ authzid: 'a' });
+// $ExpectType void
+m.challenge('challenge');
diff --git a/types/sasl-external/tsconfig.json b/types/sasl-external/tsconfig.json
new file mode 100644
index 0000000000..b319008559
--- /dev/null
+++ b/types/sasl-external/tsconfig.json
@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "sasl-external-tests.ts"
+    ]
+}
diff --git a/types/sasl-external/tslint.json b/types/sasl-external/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/sasl-external/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }