diff --git a/README.md b/README.md
new file mode 100644
index 0000000..74649be
--- /dev/null
+++ b/README.md
@@ -0,0 +1,7 @@
+# fuzz-rustc-ast
+
+try to fuzz rustc with "kinda valid" input generated by creating arbitrary syn ASTs
+
+does not work currently
+
+uses a patched syn to get the impls for `arbitrary` https://github.com/Nilstrieb/syn/tree/arbitrary