diff --git a/src/revisions/revision-metadata.dto.ts b/src/revisions/revision-metadata.dto.ts
new file mode 100644
index 000000000..897e64501
--- /dev/null
+++ b/src/revisions/revision-metadata.dto.ts
@@ -0,0 +1,13 @@
+import { IsDate, IsNumber, IsString } from 'class-validator';
+import { Revision } from './revision.entity';
+
+export class RevisionMetadataDto {
+  @IsString()
+  id: Revision['id'];
+
+  @IsDate()
+  updatedAt: Date;
+
+  @IsNumber()
+  length: number;
+}
diff --git a/src/revisions/revision.dto.ts b/src/revisions/revision.dto.ts
new file mode 100644
index 000000000..c917f8990
--- /dev/null
+++ b/src/revisions/revision.dto.ts
@@ -0,0 +1,11 @@
+import { IsString } from 'class-validator';
+import { Revision } from './revision.entity';
+
+export class RevisionDto {
+  @IsString()
+  id: Revision['id'];
+  @IsString()
+  content: string;
+  @IsString()
+  patch: string;
+}