diff --git a/chksum.spec.md b/chksum.spec.md
new file mode 100644
index 0000000..9ea07b8
--- /dev/null
+++ b/chksum.spec.md
@@ -0,0 +1,16 @@
+The code responsible for traversing all files/folders needs to be seperate from the actual code responsible for checksumming the files/folders. The return value still has to be fixated, but I would choose something like a string array/vector of filepaths.
+
+Only use classes were it actually makes sense. Instead prefer structs for data encapsulation.
+
+It needs to be able to accept cmdline arguments as input only. Args are comprised of:
+
+- flags  like --help or -v/--verbose
+- a filepath from which it should checksum
+
+It needs be able to checksum files or folders or both.
+
+It should be able to save the checksums in a structured way. Something like:
+
+- Database
+- CSV
+- ...
\ No newline at end of file