diff --git a/c-api/toy_h.md b/c-api/toy_h.md
new file mode 100644
index 0000000..126843b
--- /dev/null
+++ b/c-api/toy_h.md
@@ -0,0 +1,4 @@
+# toy.h
+
+This header includes a number of other header files, which are essential for the normal operation of Toy. It also includes some broad outlines, written in the comments, of what each header does. It's intended as a good starting point for people looking to dive deeper into the langauge's implementation.
+
diff --git a/index.md b/index.md
index ca5b7dd..4b37742 100644
--- a/index.md
+++ b/index.md
@@ -70,6 +70,7 @@ print tally(); //3
 <hr />
 
 * [repl_tools.h](c-api/repl_tools_h.md)
+* [toy.h](c-api/toy_h.md)
 * [toy_common.h](c-api/toy_common_h.md)
 * [toy_compiler.h](c-api/toy_compiler_h.md)
 * [toy_interpreter.h](c-api/toy_interpreter_h.md)