From f1332b585d055ff5318db4d4d10631ea776c4938 Mon Sep 17 00:00:00 2001
From: Adam Dierkens <adierkens@users.noreply.github.com>
Date: Fri, 27 Mar 2026 19:44:57 +0000
Subject: [PATCH 1/2] Remove old fallback for mcp docs

---
 package-lock.json          |  8 +++----
 packages/mcp/src/server.ts | 46 ++++++++------------------------------
 2 files changed, 13 insertions(+), 41 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index 293f92456bb..7eaac82f053 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -82,7 +82,7 @@
         "react-dom": "^18.3.1"
       },
       "devDependencies": {
-        "@primer/react": "38.16.0",
+        "@primer/react": "38.17.0",
         "@primer/styled-react": "1.0.3",
         "@types/react": "^18.3.11",
         "@types/react-dom": "^18.3.0",
@@ -96,7 +96,7 @@
       "name": "example-nextjs",
       "version": "0.0.0",
       "dependencies": {
-        "@primer/react": "38.16.0",
+        "@primer/react": "38.17.0",
         "@primer/styled-react": "1.0.3",
         "next": "^16.1.7",
         "react": "^19.2.0",
@@ -139,7 +139,7 @@
       "version": "0.0.0",
       "dependencies": {
         "@primer/octicons-react": "^19.21.0",
-        "@primer/react": "38.16.0",
+        "@primer/react": "38.17.0",
         "@primer/styled-react": "1.0.3",
         "clsx": "^2.1.1",
         "next": "^16.1.7",
@@ -27322,7 +27322,7 @@
     },
     "packages/react": {
       "name": "@primer/react",
-      "version": "38.16.0",
+      "version": "38.17.0",
       "license": "MIT",
       "dependencies": {
         "@github/mini-throttle": "^2.1.1",
diff --git a/packages/mcp/src/server.ts b/packages/mcp/src/server.ts
index 7cda805d255..915e565fd69 100644
--- a/packages/mcp/src/server.ts
+++ b/packages/mcp/src/server.ts
@@ -133,11 +133,10 @@ server.registerTool(
         content: [],
       }
     }
-
-    const llmsUrl = new URL(`/product/components/${match.slug}/llms.txt`, 'https://primer.style')
-    const llmsResponse = await fetch(llmsUrl)
-    if (llmsResponse.ok) {
-      try {
+    try {
+      const llmsUrl = new URL(`/product/components/${match.slug}/llms.txt`, 'https://primer.style')
+      const llmsResponse = await fetch(llmsUrl)
+      if (llmsResponse.ok) {
         const llmsText = await llmsResponse.text()
         return {
           content: [
@@ -147,42 +146,15 @@ server.registerTool(
             },
           ],
         }
-      } catch (_: unknown) {
-        // If there's an error fetching or processing the llms.txt, we fall back to the regular documentation
-      }
-    }
-
-    const url = new URL(`/product/components/${match.slug}`, 'https://primer.style')
-    const response = await fetch(url)
-    if (!response.ok) {
-      throw new Error(`Failed to fetch ${url}: ${response.statusText}`)
-    }
-
-    const html = await response.text()
-    if (!html) {
-      return {
-        content: [],
-      }
-    }
-
-    const $ = cheerio.load(html)
-    const source = $('main').html()
-    if (!source) {
-      return {
-        content: [],
       }
+    } catch (_: unknown) {
+      // If there's an error fetching or processing the llms.txt, we fall back to a generic error message.
     }
 
-    const text = turndownService.turndown(source)
-
     return {
-      content: [
-        {
-          type: 'text',
-          text: `Here is the documentation for the \`${name}\` component from the @primer/react package:
-${text}`,
-        },
-      ],
+      isError: true,
+      errorMessage: `There was an error fetching documentation for ${name}. Ensure the component exists.`,
+      content: [],
     }
   },
 )

From f160fa811d1adf2a7aabee2a9c8396070ea72335 Mon Sep 17 00:00:00 2001
From: Adam Dierkens <adierkens@users.noreply.github.com>
Date: Fri, 27 Mar 2026 19:47:56 +0000
Subject: [PATCH 2/2] Add changeset

---
 .changeset/swift-ads-matter.md | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 .changeset/swift-ads-matter.md

diff --git a/.changeset/swift-ads-matter.md b/.changeset/swift-ads-matter.md
new file mode 100644
index 00000000000..1b3da848a91
--- /dev/null
+++ b/.changeset/swift-ads-matter.md
@@ -0,0 +1,5 @@
+---
+'@primer/mcp': patch
+---
+
+Removes fallback for legacy documentation for components using `get_component`