diff --git a/tool/api_for_ismm_isat/README.md b/tool/api_for_ismm_isat/README.md
index 7e85b3690d..bbe23bd0d4 100644
--- a/tool/api_for_ismm_isat/README.md
+++ b/tool/api_for_ismm_isat/README.md
@@ -1 +1,17 @@
-# Section is WIP. Try again later.
\ No newline at end of file
+## API files for IsMM/IsAT Add-ons
+
+
+### Requirements
+```
+- Webserver
+- PHP 7 or later
+```
+
+## Set up API for `Ĉu ligoj estas vundeblaj al MITM-atako?` add-on
+
+(WIP)
+
+## Set up API for `Ĉu ĉi tiuj ligoj blokos Tor-uzanton?` add-on
+
+(WIP)
+