diff --git a/packages/backend/src/misc/schema.ts b/packages/backend/src/misc/schema.ts
index 6e03d30d9..9b75f9fb5 100644
--- a/packages/backend/src/misc/schema.ts
+++ b/packages/backend/src/misc/schema.ts
@@ -31,6 +31,7 @@ import { packedQueueCountSchema } from "@/models/schema/queue.js";
 import { packedGalleryPostSchema } from "@/models/schema/gallery-post.js";
 import { packedEmojiSchema } from "@/models/schema/emoji.js";
 import { packedNoteEdit } from "@/models/schema/note-edit.js";
+import { packedMetaExperimentalFeatures } from "@/models/schema/meta-experimental-features.js";
 
 export const refs = {
 	UserLite: packedUserLiteSchema,
@@ -65,6 +66,7 @@ export const refs = {
 	FederationInstance: packedFederationInstanceSchema,
 	GalleryPost: packedGalleryPostSchema,
 	Emoji: packedEmojiSchema,
+	MetaExperimentalFeatures: packedMetaExperimentalFeatures,
 };
 
 export type Packed<x extends keyof typeof refs> = SchemaType<typeof refs[x]>;
diff --git a/packages/backend/src/models/schema/meta-experimental-features.ts b/packages/backend/src/models/schema/meta-experimental-features.ts
new file mode 100644
index 000000000..45a912519
--- /dev/null
+++ b/packages/backend/src/models/schema/meta-experimental-features.ts
@@ -0,0 +1,11 @@
+export const packedMetaExperimentalFeatures = {
+	type: "object",
+	properties: {
+		postEditing: {
+			type: "boolean",
+			optional: false,
+			nullable: false,
+			example: "false",
+		},
+	},
+} as const;
diff --git a/packages/calckey-js/src/entities.ts b/packages/calckey-js/src/entities.ts
index 5a581a54c..b03c9594e 100644
--- a/packages/calckey-js/src/entities.ts
+++ b/packages/calckey-js/src/entities.ts
@@ -492,3 +492,7 @@ export type UserSorting =
 	| "+updatedAt"
 	| "-updatedAt";
 export type OriginType = "combined" | "local" | "remote";
+
+export type MetaExperimentalFeatures = {
+	postEditing: boolean;
+};