diff --git a/api/Document.json b/api/Document.json
index 61cd8c435dabcb..da2069f1528862 100644
--- a/api/Document.json
+++ b/api/Document.json
@@ -7330,6 +7330,7 @@
       "scrollsnapchange_event": {
         "__compat": {
           "description": "<code>scrollsnapchange</code> event",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Document/scrollsnapchange_event",
           "spec_url": "https://drafts.csswg.org/css-scroll-snap-2/#scrollsnapchange",
           "support": {
             "chrome": {
@@ -7365,6 +7366,7 @@
       "scrollsnapchanging_event": {
         "__compat": {
           "description": "<code>scrollsnapchanging</code> event",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Document/scrollsnapchanging_event",
           "spec_url": "https://drafts.csswg.org/css-scroll-snap-2/#scrollsnapchanging",
           "support": {
             "chrome": {
diff --git a/api/Element.json b/api/Element.json
index 8fc2348789b5ce..72c3f40d9e9f85 100644
--- a/api/Element.json
+++ b/api/Element.json
@@ -9270,6 +9270,7 @@
       "scrollsnapchange_event": {
         "__compat": {
           "description": "<code>scrollsnapchange</code> event",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/scrollsnapchange_event",
           "spec_url": "https://drafts.csswg.org/css-scroll-snap-2/#scrollsnapchange",
           "support": {
             "chrome": {
@@ -9305,6 +9306,7 @@
       "scrollsnapchanging_event": {
         "__compat": {
           "description": "<code>scrollsnapchanging</code> event",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/scrollsnapchanging_event",
           "spec_url": "https://drafts.csswg.org/css-scroll-snap-2/#scrollsnapchanging",
           "support": {
             "chrome": {
diff --git a/api/ErrorEvent.json b/api/ErrorEvent.json
index 41afcef6e84d75..622541bd4eecc9 100644
--- a/api/ErrorEvent.json
+++ b/api/ErrorEvent.json
@@ -125,6 +125,7 @@
       },
       "error": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ErrorEvent/error",
           "spec_url": "https://html.spec.whatwg.org/multipage/webappapis.html#dom-errorevent-error",
           "support": {
             "chrome": {
@@ -164,6 +165,7 @@
       },
       "filename": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ErrorEvent/filename",
           "spec_url": "https://html.spec.whatwg.org/multipage/webappapis.html#dom-errorevent-filename",
           "support": {
             "chrome": {
@@ -250,6 +252,7 @@
       },
       "message": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ErrorEvent/message",
           "spec_url": "https://html.spec.whatwg.org/multipage/webappapis.html#dom-errorevent-message",
           "support": {
             "chrome": {
diff --git a/api/HTMLButtonElement.json b/api/HTMLButtonElement.json
index 925614527a12cf..0add8059be2d8b 100644
--- a/api/HTMLButtonElement.json
+++ b/api/HTMLButtonElement.json
@@ -389,6 +389,7 @@
       },
       "formMethod": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLButtonElement/formMethod",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fs-formmethod",
           "tags": [
             "web-features:button"
diff --git a/api/HTMLFormElement.json b/api/HTMLFormElement.json
index dee6d1ea6f6f22..830ee2b85aaba4 100644
--- a/api/HTMLFormElement.json
+++ b/api/HTMLFormElement.json
@@ -139,6 +139,7 @@
       },
       "autocomplete": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLFormElement/autocomplete",
           "spec_url": "https://html.spec.whatwg.org/multipage/forms.html#dom-form-autocomplete",
           "tags": [
             "web-features:form"
diff --git a/api/HTMLInputElement.json b/api/HTMLInputElement.json
index 09d820e934c974..15f82d59889a7c 100644
--- a/api/HTMLInputElement.json
+++ b/api/HTMLInputElement.json
@@ -715,6 +715,7 @@
       },
       "formMethod": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLInputElement/formMethod",
           "spec_url": "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-fs-formmethod",
           "support": {
             "chrome": {
diff --git a/api/SnapEvent.json b/api/SnapEvent.json
index 30088772575e3b..5667d4b0e6261f 100644
--- a/api/SnapEvent.json
+++ b/api/SnapEvent.json
@@ -2,6 +2,7 @@
   "api": {
     "SnapEvent": {
       "__compat": {
+        "mdn_url": "https://developer.mozilla.org/docs/Web/API/SnapEvent",
         "spec_url": "https://drafts.csswg.org/css-scroll-snap-2/#snapevent-interface",
         "support": {
           "chrome": {
@@ -36,6 +37,7 @@
       "SnapEvent": {
         "__compat": {
           "description": "<code>SnapEvent()</code> constructor",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/SnapEvent/SnapEvent",
           "spec_url": "https://drafts.csswg.org/css-scroll-snap-2/#dom-snapevent-snapevent",
           "support": {
             "chrome": {
@@ -70,6 +72,7 @@
       },
       "snapTargetBlock": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/SnapEvent/snapTargetBlock",
           "spec_url": "https://drafts.csswg.org/css-scroll-snap-2/#dom-snapevent-snaptargetblock",
           "support": {
             "chrome": {
@@ -104,6 +107,7 @@
       },
       "snapTargetInline": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/SnapEvent/snapTargetInline",
           "spec_url": "https://drafts.csswg.org/css-scroll-snap-2/#dom-snapevent-snaptargetinline",
           "support": {
             "chrome": {
diff --git a/api/Window.json b/api/Window.json
index 3d39768b0f8dee..90ed2c284e379d 100644
--- a/api/Window.json
+++ b/api/Window.json
@@ -5561,6 +5561,7 @@
       "scrollsnapchange_event": {
         "__compat": {
           "description": "<code>scrollsnapchange</code> event",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Window/scrollsnapchange_event",
           "spec_url": "https://drafts.csswg.org/css-scroll-snap-2/#scrollsnapchange",
           "support": {
             "chrome": {
@@ -5596,6 +5597,7 @@
       "scrollsnapchanging_event": {
         "__compat": {
           "description": "<code>scrollsnapchanging</code> event",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Window/scrollsnapchanging_event",
           "spec_url": "https://drafts.csswg.org/css-scroll-snap-2/#scrollsnapchanging",
           "support": {
             "chrome": {
diff --git a/css/properties/interpolate-size.json b/css/properties/interpolate-size.json
index 80789c82342b30..0e87a90b4a73ad 100644
--- a/css/properties/interpolate-size.json
+++ b/css/properties/interpolate-size.json
@@ -3,6 +3,7 @@
     "properties": {
       "interpolate-size": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/interpolate-size",
           "spec_url": "https://drafts.csswg.org/css-values-5/#interpolate-size",
           "support": {
             "chrome": {
diff --git a/css/types/calc-size.json b/css/types/calc-size.json
index ce4b096048eeea..fcb3843f1c59f9 100644
--- a/css/types/calc-size.json
+++ b/css/types/calc-size.json
@@ -4,6 +4,7 @@
       "calc-size": {
         "__compat": {
           "description": "<code>calc-size()</code>",
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/calc-size",
           "spec_url": "https://drafts.csswg.org/css-values-5/#calc-size",
           "support": {
             "chrome": {