feat(docs): document LLMs.txt and LLMs-full.txt

fern/docs.yml

@@ -543,6 +543,10 @@ navigation:
 
       - section: Developer Tools
         contents:
+          - page: LLMs.txt
+            icon: fa-regular fa-laptop-code
+            path: ./pages/docs/developer-tools/llms-txt.mdx
+            slug: llms-txt
           - page: Cursor
             icon: fa-regular fa-laptop-code
             path: ./pages/docs/developer-tools/cursor.mdx

fern/fern.config.json

@@ -1,4 +1,4 @@
 {
   "organization": "fern",
   "version": "*"
-}
+}

fern/pages/docs/developer-tools/llms-txt.mdx

@@ -0,0 +1,39 @@
+---
+title: llms.txt
+subtitle: Enable tools like Cursor, GitHub Copilot, ChatGPT, and Claude to quickly understand your documentation.
+description: Learn how your documentation becomes accessible to AI tools using the llms.txt standard. Make your docs AI-friendly.
+layout: guide
+---
+
+## What is llms.txt?
+[LLMs.txt](https://llmstxt.org/) is an emerging standard so that websites can easily expose information to AI developer tools. 
+LLMs thrive on concise, structured information, and `llms.txt` help them locate and interpret key information in your developer documentation with ease.
+No configuration required--your `llms.txt` files are automatically generated and maintained, just like a `sitemap.xml` or `robots.txt`. 
+
+### llms.txt
+- **Small and fast**: Quick to load and easy to parse.
+- **Summary-focused**: Each page distilled into a one-sentence description with its URL.
+- **Structured for AI**: Helps tools understand the overall structure of your documentation.
+
+See an example: [docs.cohere.com/llms.txt](https://docs.cohere.com/llms.txt)
+
+### llms-full.txt
+- **Comprehensive**: Includes the full content of your documentation.
+- **API-Ready**: Automatically incorporates your full API reference and SDK snippets (if generated by Fern).
+- **Token efficient**: Removes unncessary formatting to be as token-efficient as possible.
+
+See an example: [docs.cohere.com/llms-full.txt](https://docs.cohere.com/llms-full.txt)
+
+## View in Action
+
+Check out the llms.txt files for this site:
+- `https://buildwithfern.com/learn/llms.txt`
+- `https://buildwithfern.com/learn/llms-full.txt`
+
+<Frame>
+  <img
+    src="./llms-txt.png"
+    alt="Example of using llms.txt"
+    className="rounded-lg border border-gray-200 dark:border-gray-700"
+  />
+</Frame>

package.json

@@ -75,7 +75,7 @@
     "eslint-plugin-react-hooks": "^5.1.0",
     "eslint-plugin-tailwindcss": "^3.17.5",
     "execa": "^5.1.1",
-    "fern-api": "latest",
+    "fern-api": "^0.48.1",
     "husky": "^9.1.7",
     "immer": "^10.1.1",
     "is-ci": "^4.1.0",