diff --git a/TODO.md b/TODO.md
index fd693b2..5ec509d 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,3 +1,4 @@
 * perf benchmark
 * full api doc
-* Website
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+* Website
+* API Extractor https://zhuanlan.zhihu.com/p/434565485
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