fix: always return markdown content for llms on llms.txt route

package.json

@@ -60,6 +60,7 @@
     "svelte-sonner": "0.3.28",
     "tailwind-merge": "^3.3.1",
     "turndown": "^7.2.1",
+    "ua-parser-js": "^2.0.5",
     "unocss": "~66.4.2",
     "unzipit": "^1.4.3",
     "vite": "^5.4.20"

src/netlify/edge-functions/llms-redirect.ts

@@ -1,6 +1,18 @@
-import type { Config } from "@netlify/edge-functions";
+import type { Config, Context } from "@netlify/edge-functions";
 
-export default async () => Response.redirect("/hmr/llms", 302);
+import { isAIBot } from "ua-parser-js/helpers";
+
+export default async (request: Request, context: Context) => {
+  const userAgent = request.headers.get("user-agent") || "";
+  if (isAIBot(userAgent)) {
+    const res = await context.next();
+    res.headers.set("content-type", "text/markdown; charset=utf-8");
+    return res;
+  }
+  else {
+    return Response.redirect("/hmr/llms", 302);
+  }
+};
 
 export const config: Config = {
   path: "/hmr/llms*",

vercel.json

@@ -10,6 +10,13 @@
           "value": ".*text/html.*"
         }
       ],
+      "missing": [
+        {
+          "type": "header",
+          "key": "user-agent",
+          "value": ".*(ai|bot).*"
+        }
+      ],
       "destination": "/hmr/llms",
       "permanent": false
     }