diff --git a/.gitignore b/.gitignore
index 6320cd2..7106392 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
-data
\ No newline at end of file
+data
+.DS_Store
diff --git a/config.json b/config.json
new file mode 100644
index 0000000..2fd1b34
--- /dev/null
+++ b/config.json
@@ -0,0 +1,6 @@
+[
+    {
+        "numCores": 1,
+        "type": "int"
+    }
+]
\ No newline at end of file
diff --git a/input.json b/input.json
new file mode 100644
index 0000000..8aa0fe0
--- /dev/null
+++ b/input.json
@@ -0,0 +1,13 @@
+{
+    "name" : "echo/input",
+    "desc" : "echo input",
+    "files" : [
+        {
+            "id" : "fcs",
+            "filename" : "input.fcs",
+            "desc" : "fcs file",
+            "ext" : ".fcs",
+            "required" : true
+        }
+    ]
+}
\ No newline at end of file
diff --git a/output.json b/output.json
new file mode 100644
index 0000000..07e2cb5
--- /dev/null
+++ b/output.json
@@ -0,0 +1,13 @@
+{
+    "name" : "echo/output",
+    "desc" : "echo output",
+    "files" : [
+        {
+            "id" : "fcs",
+            "filename" : "output.csv",
+            "desc" : "csv file",
+            "ext" : ".csv",
+            "required" : true
+        }
+    ]
+}
\ No newline at end of file