diff --git a/devdoc/tlsio_sl_requirements.md b/devdoc/tlsio_sl_requirements.md
--- /dev/null
@@ -0,0 +1,12 @@
+# tlsio_sl
+
+
+## Overview
+
+The tlsio_sl adapter implements a tlsio adapter for SimpleLink platforms from TI.
+
+
+## Base Specification
+
+The tlsio_sl adapter conforms to the
+[tlsio base specification](https://github.com/Azure/azure-c-shared-utility/blob/master/devdoc/tlsio_requirements.md).