diff --git a/apps/web/src/app/tui.json/route.ts b/apps/web/src/app/tui.json/route.ts
new file mode 100644
index 000000000..2ba2b0c0b
--- /dev/null
+++ b/apps/web/src/app/tui.json/route.ts
@@ -0,0 +1,34 @@
+import { NextResponse } from "next/server";
+
+/**
+ * Serves the Kilo TUI keybind config JSON Schema at `app.kilo.ai/tui.json`.
+ *
+ * Fetches the upstream opencode schema at request time. Cached at the CDN edge
+ * for 1 hour with stale-while-revalidate, so the actual upstream fetch happens
+ * at most once per hour per region.
+ *
+ * The URL is referenced as `$schema` in generated `tui.json` files by the
+ * Kilo CLI (`packages/opencode/src/cli/cmd/tui/config/tui-migrate.ts`) and in
+ * the keybinds documentation at `https://app.kilo.ai/docs/customize/keybinds`.
+ */
+
+const UPSTREAM = "https://opencode.ai/tui.json";
+const CACHE_SECONDS = 60 * 60; // 1 hour
+
+export async function GET() {
+  const res = await fetch(UPSTREAM, { next: { revalidate: CACHE_SECONDS } });
+  if (!res.ok) {
+    return NextResponse.json(
+      { error: `upstream ${UPSTREAM} returned ${res.status}` },
+      { status: 502 },
+    );
+  }
+  const upstream: unknown = await res.json();
+
+  return NextResponse.json(upstream, {
+    headers: {
+      "cache-control": `public, max-age=0, s-maxage=${CACHE_SECONDS}, stale-while-revalidate=${CACHE_SECONDS}`,
+      "access-control-allow-origin": "*",
+    },
+  });
+}