Adding definition.json after review
diff --git a/cells/endcap/definition.json b/cells/endcap/definition.json
new file mode 100644
index 0000000..b9dbdb1
--- /dev/null
+++ b/cells/endcap/definition.json
@@ -0,0 +1,23 @@
+{
+    "description": "row end closure cell",
+    "file_prefix": "gf180mcu_fd_sc_mcu9t5v0__endcap",
+    "library": "gf180mcu_fd_sc_mcu9t5v0",
+    "name": "endcap",
+    "parameters": [],
+    "ports": [
+        [
+            "power",
+            "VDD",
+            "input",
+            "supply1"
+        ],
+        [
+            "power",
+            "VSS",
+            "input",
+            "supply0"
+        ]
+    ],
+    "type": "cell",
+    "verilog_name": "gf180mcu_fd_sc_mcu9t5v0__endcap"
+}
\ No newline at end of file