diff --git a/models/calendar-entry.ts b/models/calendar-entry.ts
new file mode 100644
index 0000000..f8cca15
--- /dev/null
+++ b/models/calendar-entry.ts
@@ -0,0 +1,5 @@
+export interface CalendarEntry {
+  snapshotId: string;
+  commitSha: string;
+  dateCaptured: string;
+}
diff --git a/models/owner.ts b/models/owner.ts
new file mode 100644
index 0000000..223d086
--- /dev/null
+++ b/models/owner.ts
@@ -0,0 +1,4 @@
+export interface Owner {
+  name: string;
+  url: string;
+}
diff --git a/models/playlist.ts b/models/playlist.ts
new file mode 100644
index 0000000..e2508c8
--- /dev/null
+++ b/models/playlist.ts
@@ -0,0 +1,13 @@
+import { Owner } from './owner';
+import { Track } from './track';
+
+export interface Playlist {
+  description: string;
+  num_followers: number;
+  original_name: string;
+  owner: Owner;
+  snapshot_id: string;
+  tracks: Track[];
+  unique_name: string;
+  url: string;
+}
diff --git a/models/track.ts b/models/track.ts
new file mode 100644
index 0000000..f3b317e
--- /dev/null
+++ b/models/track.ts
@@ -0,0 +1,13 @@
+import { Owner } from './owner';
+
+export interface Track {
+  added_at: string;
+  album: {
+    name: string;
+    url: string;
+  };
+  artists: Owner[];
+  duration_ms: number;
+  name: string;
+  url: string;
+}