From b6253c87b43cb2fa4b6e9a25298b326869c86ec7 Mon Sep 17 00:00:00 2001
From: sriramveeraghanta <veeraghanta.sriram@gmail.com>
Date: Tue, 21 Apr 2026 20:47:06 +0530
Subject: [PATCH] feat(vercel): add Vary: accept so CDN serves markdown to
 agents

The existing Accept: text/markdown rewrite was being masked by Vercel's
CDN caching the first variant (HTML) and serving it for all subsequent
requests regardless of Accept header. Advertising Vary: accept lets the
CDN cache HTML and markdown as separate entries so agents actually get
markdown back.
---
 vercel.json | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/vercel.json b/vercel.json
index bad473fb..392f218c 100644
--- a/vercel.json
+++ b/vercel.json
@@ -7,6 +7,10 @@
         {
           "key": "Link",
           "value": "</llms.txt>; rel=\"describedby\"; type=\"text/plain\", </api-reference/introduction>; rel=\"service-doc\"; type=\"text/html\", </sitemap.xml>; rel=\"sitemap\"; type=\"application/xml\""
+        },
+        {
+          "key": "Vary",
+          "value": "accept"
         }
       ]
     }