diff --git a/docs/api/scheme/cyclone/ast.md b/docs/api/scheme/cyclone/ast.md
index 54b8881c..d7edcf5e 100644
--- a/docs/api/scheme/cyclone/ast.md
+++ b/docs/api/scheme/cyclone/ast.md
@@ -15,6 +15,9 @@ The `(scheme cyclone ast)` library defines abstract syntax tree types used durin
 - [`ast:set-lambda-args!`](#astset-lambda-args)
 - [`ast:lambda-body`](#astlambda-body)
 - [`ast:set-lambda-body!`](#astset-lambda-body)
+- [`ast:ast->sexp`](#astast-sexp)
+- [`ast:sexp->ast`](#astsexp-ast) 
+- [`ast:ast->pp-sexp`](#astast-pp-sexp)
 
 # ast:make-lambda
     (ast:make-lambda args body)
@@ -45,3 +48,14 @@ The `(scheme cyclone ast)` library defines abstract syntax tree types used durin
 
     (ast:set-lambda-body! lambda-obj body)
 
+# ast:ast->sexp
+
+    (ast:ast->sexp exp)
+
+# ast:sexp->ast
+
+    (ast:sexp->ast exp)
+
+# ast:ast->pp-sexp
+
+    (ast:ast->pp-sexp exp)