diff --git a/functions/api/inactivity/new.ts b/functions/api/inactivity/new.ts
new file mode 100644
index 0000000..baf5ccc
--- /dev/null
+++ b/functions/api/inactivity/new.ts
@@ -0,0 +1,76 @@
+export async function onRequestPost(context: RequestContext) {
+  if (!context.data.departments)
+    return new Response('{"error":"Not in any departments"}', {
+      headers: {
+        "content-type": "application/json",
+      },
+      status: 403,
+    });
+
+  const { departments, end, reason, start } = context.data.body;
+
+  if (
+    !Array.isArray(departments) ||
+    !departments.length ||
+    typeof end !== "string" ||
+    typeof reason !== "string" ||
+    typeof start !== "string"
+  )
+    return new Response('{"error":"Invalid notice"}', {
+      headers: {
+        "content-type": "application/json",
+      },
+      status: 400,
+    });
+
+  const endDate = new Date(end);
+  const startDate = new Date(start);
+  const now = new Date();
+
+  if (
+    isNaN(endDate.getFullYear()) ||
+    isNaN(startDate.getFullYear()) ||
+    endDate.getFullYear() < now.getFullYear() ||
+    endDate.getFullYear() > now.getFullYear() + 1 ||
+    startDate.getFullYear() < now.getFullYear() ||
+    startDate.getFullYear() > now.getFullYear() + 1 ||
+    endDate.valueOf() < startDate.valueOf()
+  )
+    return new Response('{"error":"Dates are invalid"}', {
+      headers: {
+        "content-type": "application/json",
+      },
+      status: 400,
+    });
+
+  if (!departments.every(d => context.data.departments.includes(d)))
+    return new Response('{"error":"Cannot file a notice in a department you are not part of"}', {
+      headers: {
+        "content-type": "application/json",
+      },
+      status: 400,
+    });
+
+  const inactivityId =
+    context.data.current_user.id +
+    (context.request.headers.get("cf-ray") as string).split("-")[0] +
+    Date.now().toString();
+
+  await context.env.DATA.put(`inactivity_${inactivityId}`, JSON.stringify({
+    departments,
+    end,
+    reason,
+    start,
+    user: {
+      discriminator: context.data.current_user.discriminator,
+      id: context.data.current_user.id,
+      username: context.data.current_user.username,
+    },
+  }), {
+    expirationTtl: 63072000
+  });
+
+  return new Response(null, {
+    status: 204,
+  });
+}