diff --git a/api/ContentVisibilityAutoStateChangedEvent.json b/api/ContentVisibilityAutoStateChangedEvent.json
new file mode 100644
index 0000000000000..9e226cb3ebf6b
--- /dev/null
+++ b/api/ContentVisibilityAutoStateChangedEvent.json
@@ -0,0 +1,107 @@
+{
+  "api": {
+    "ContentVisibilityAutoStateChangedEvent": {
+      "__compat": {
+        "mdn_url": "https://developer.mozilla.org/docs/Web/API/ContentVisibilityAutoStateChangedEvent",
+        "spec_url": "https://www.w3.org/TR/css-contain-2/#content-visibility-auto-state-changed",
+        "support": {
+          "chrome": {
+            "version_added": "108"
+          },
+          "chrome_android": "mirror",
+          "edge": "mirror",
+          "firefox": {
+            "version_added": false
+          },
+          "firefox_android": "mirror",
+          "ie": {
+            "version_added": false
+          },
+          "oculus": "mirror",
+          "opera": "mirror",
+          "opera_android": "mirror",
+          "safari": {
+            "version_added": false
+          },
+          "safari_ios": "mirror",
+          "samsunginternet_android": "mirror",
+          "webview_android": "mirror"
+        },
+        "status": {
+          "experimental": true,
+          "standard_track": true,
+          "deprecated": false
+        }
+      },
+      "ContentVisibilityAutoStateChangedEvent": {
+        "__compat": {
+          "description": "<code>ContentVisibilityAutoStateChangedEvent()</code> constructor",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ContentVisibilityAutoStateChangedEvent/ContentVisibilityAutoStateChangedEvent",
+          "spec_url": "https://www.w3.org/TR/css-contain-2/#dom-contentvisibilityautostatechangedevent-contentvisibilityautostatechangedevent",
+          "support": {
+            "chrome": {
+              "version_added": "108"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "skipped": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ContentVisibilityAutoStateChangedEvent/skipped",
+          "spec_url": "https://www.w3.org/TR/css-contain-2/#dom-contentvisibilityautostatechangedevent-skipped",
+          "support": {
+            "chrome": {
+              "version_added": "108"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/api/Element.json b/api/Element.json
index c77979c883eb8..7f98b59672783 100644
--- a/api/Element.json
+++ b/api/Element.json
@@ -3148,6 +3148,41 @@
           }
         }
       },
+      "contentvisibilityautostatechanged_event": {
+        "__compat": {
+          "description": "<code>contentvisibilityautostatechanged</code> event",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/contentvisibilityautostatechanged_event",
+          "spec_url": "https://www.w3.org/TR/css-contain-2/#content-visibility-auto-state-changed",
+          "support": {
+            "chrome": {
+              "version_added": "108"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
       "contextmenu_event": {
         "__compat": {
           "description": "<code>contextmenu</code> event",