Add Mintlify integration page for Fern (#1787)

Author: devin-ai-integration[bot]

fern/products/docs/docs.yml

@@ -269,6 +269,8 @@ navigation:
         slug: analytics/mixpanel
       - page: Postman
         path: ./pages/integrations/postman.mdx
+      - page: Mintlify
+        path: ./pages/integrations/mintlify.mdx
       - page: LaunchDarkly feature flags 
         path: ./pages/integrations/feature-flags.mdx
         hidden: true

fern/products/docs/pages/integrations/mintlify.mdx

@@ -0,0 +1,28 @@
+---
+title: "Mintlify"
+description: "Generate SDKs with Fern and document them with Mintlify"
+---
+
+Use Fern to generate SDKs for your API, then document them in Mintlify with automatically enriched code samples.
+
+## How it works
+
+Fern generates SDKs and provides a publicly accessible OpenAPI spec enriched with SDK code samples. Reference this spec in your Mintlify documentation to display SDK usage examples in your API playground.
+
+## Setup
+
+Add the Fern OpenAPI spec URL to your Mintlify `docs.json` configuration:
+
+```json docs.json
+{
+  "anchors": [
+    {
+      "name": "API Reference",
+      "openapi": "https://registry.buildwithfern.com/{org}/{api-name}/openapi/openapi.json",
+      "url": "api-reference"
+    }
+  ]
+}
+```
+
+Replace `{org}` with your organization name and `{api-name}` with your API name from `fern.config.json`.

fern/products/docs/pages/integrations/overview.mdx

@@ -47,6 +47,14 @@ description: "Integrate with third party platforms for analytics, support, etc."
   iconSize={12}
 />
 
+<Card
+  title="Mintlify"
+  href="/docs/integrations/mintlify"
+  horizontal
+  icon={<img src="https://mintcdn.com/mintlify/e0-N9JebsJpsinlD/logo/light.svg" />}
+  iconSize={12}
+/>
+
 </CardGroup>
 
 ## Enabling Analytics
@@ -99,4 +107,4 @@ are available during the workflow run.
 
 <Markdown src="/snippets/enterprise-plan.mdx"/>
 
-If you want to integrate with a third-party analytics or support platforms that Fern doesn't directly support, you can do so [using custom JS](/docs/customization/custom-css-js#custom-javascript). 
+If you want to integrate with a third-party analytics or support platforms that Fern doesn't directly support, you can do so [using custom JS](/docs/customization/custom-css-js#custom-javascript).