diff --git a/library.json b/library.json
new file mode 100644
index 00000000..2a6fdd34
--- /dev/null
+++ b/library.json
@@ -0,0 +1,27 @@
+{
+  "name": "Embedded Template Library",
+  "version": "10.21.2",
+  "authors": {
+    "name": "John Wellbelove",
+    "email":  "<john.wellbelove@etlcpp.com>"
+  },
+  "homepage": "https://www.etlcpp.com/",
+  "license": "MIT",
+  "description": "A C++ template library tailored for embedded systems. Requires some support from STL. See http://andybrown.me.uk/2011/01/15/the-standard-template-library-stl-for-avr-with-c-streams/ or https://github.com/mike-matera/ArduinoSTL.git for Arduino.",
+  "repository": "https://github.com/ETLCPP/etl.git",
+  "platforms": [
+    "espressif8266",
+    "espressif32"
+  ],
+  "frameworks": "arduino",
+  "build": {
+    "flags": [
+      "-I include"
+    ],
+    "srcFilter": [
+        "-<src/*>",
+        "-<temp/*>",
+        "-<test/*>"
+    ]
+}
+}