diff --git a/api/Document.json b/api/Document.json
index 5a1674f164ec14..781a0326345112 100644
--- a/api/Document.json
+++ b/api/Document.json
@@ -753,6 +753,39 @@
           }
         }
       },
+      "browsingTopics": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Document/browsingTopics",
+          "support": {
+            "chrome": {
+              "version_added": "115"
+            },
+            "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": false,
+            "deprecated": false
+          }
+        }
+      },
       "captureEvents": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Document/captureEvents",
diff --git a/api/HTMLIFrameElement.json b/api/HTMLIFrameElement.json
index bf531e883c5d76..f833de8b617de1 100644
--- a/api/HTMLIFrameElement.json
+++ b/api/HTMLIFrameElement.json
@@ -204,6 +204,39 @@
           }
         }
       },
+      "browsingTopics": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLIFrameElement/browsingTopics",
+          "support": {
+            "chrome": {
+              "version_added": "115"
+            },
+            "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": false,
+            "deprecated": false
+          }
+        }
+      },
       "contentDocument": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLIFrameElement/contentDocument",
diff --git a/api/Request.json b/api/Request.json
index 3684d6e95c9027..4811d82b5c5358 100644
--- a/api/Request.json
+++ b/api/Request.json
@@ -166,6 +166,39 @@
             }
           }
         },
+        "init_browsingTopics_parameter": {
+          "__compat": {
+            "description": "<code>init.browsingTopics</code> parameter",
+            "support": {
+              "chrome": {
+                "version_added": "115"
+              },
+              "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": false,
+              "deprecated": false
+            }
+          }
+        },
         "init_priority_parameter": {
           "__compat": {
             "description": "<code>init.priority</code> parameter",
diff --git a/api/_globals/fetch.json b/api/_globals/fetch.json
index 651d8aae16c276..9e8ee4f36c4614 100644
--- a/api/_globals/fetch.json
+++ b/api/_globals/fetch.json
@@ -189,6 +189,39 @@
           }
         }
       },
+      "init_browsingTopics_parameter": {
+        "__compat": {
+          "description": "<code>init.browsingTopics</code> parameter",
+          "support": {
+            "chrome": {
+              "version_added": "115"
+            },
+            "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": false,
+            "deprecated": false
+          }
+        }
+      },
       "init_keepalive_parameter": {
         "__compat": {
           "description": "<code>init.keepalive</code> parameter",
diff --git a/html/elements/iframe.json b/html/elements/iframe.json
index 0638f81c09f14f..655e314e87f247 100644
--- a/html/elements/iframe.json
+++ b/html/elements/iframe.json
@@ -204,6 +204,38 @@
             }
           }
         },
+        "browsingtopics": {
+          "__compat": {
+            "support": {
+              "chrome": {
+                "version_added": "115"
+              },
+              "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": false,
+              "deprecated": false
+            }
+          }
+        },
         "credentialless": {
           "__compat": {
             "support": {
diff --git a/http/headers/Observe-Browsing-Topics.json b/http/headers/Observe-Browsing-Topics.json
new file mode 100644
index 00000000000000..1e30cadfe24e90
--- /dev/null
+++ b/http/headers/Observe-Browsing-Topics.json
@@ -0,0 +1,39 @@
+{
+  "http": {
+    "headers": {
+      "Observe-Browsing-Topics": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/HTTP/Headers/Observe-Browsing-Topics",
+          "support": {
+            "chrome": {
+              "version_added": "115"
+            },
+            "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": false,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/http/headers/Permissions-Policy.json b/http/headers/Permissions-Policy.json
index 4d5e770008e113..ead12fc55ede7a 100644
--- a/http/headers/Permissions-Policy.json
+++ b/http/headers/Permissions-Policy.json
@@ -237,6 +237,39 @@
             }
           }
         },
+        "browsing-topics": {
+          "__compat": {
+            "mdn_url": "https://developer.mozilla.org/docs/Web/HTTP/Headers/Permissions-Policy/browsing-topics",
+            "support": {
+              "chrome": {
+                "version_added": "115"
+              },
+              "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": false,
+              "deprecated": false
+            }
+          }
+        },
         "camera": {
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTTP/Headers/Permissions-Policy/camera",
diff --git a/http/headers/Sec-Browsing-Topics.json b/http/headers/Sec-Browsing-Topics.json
new file mode 100644
index 00000000000000..ed4ede2d6b52d2
--- /dev/null
+++ b/http/headers/Sec-Browsing-Topics.json
@@ -0,0 +1,39 @@
+{
+  "http": {
+    "headers": {
+      "Sec-Browsing-Topics": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/HTTP/Headers/Sec-Browsing-Topics",
+          "support": {
+            "chrome": {
+              "version_added": "115"
+            },
+            "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": false,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}