diff --git a/.grok-plugin/plugin.json b/.grok-plugin/plugin.json
new file mode 100644
index 0000000..ed03992
--- /dev/null
+++ b/.grok-plugin/plugin.json
@@ -0,0 +1,13 @@
+{
+  "name": "mobbin",
+  "version": "0.1.0",
+  "description": "Search real-world UI/UX design references from top mobile and web apps.",
+  "author": {
+    "name": "Mobbin",
+    "url": "https://mobbin.com"
+  },
+  "homepage": "https://docs.mobbin.com/mcp/introduction",
+  "repository": "https://github.com/mobbin/mobbin-agent-plugin",
+  "license": "MIT",
+  "keywords": ["mobbin", "design-research", "ui-design", "ux-design", "mcp"]
+}
diff --git a/.mcp.json b/.mcp.json
new file mode 100644
index 0000000..d4e0c0d
--- /dev/null
+++ b/.mcp.json
@@ -0,0 +1,9 @@
+{
+  "mcpServers": {
+    "mobbin": {
+      "type": "http",
+      "url": "https://api.mobbin.com/mcp",
+      "note": "Mobbin's hosted MCP server for searching UI screens, multi-step flows, and website sections. Uses OAuth through the MCP authorization flow."
+    }
+  }
+}
diff --git a/README.md b/README.md
index c0e83ae..b20a552 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,8 @@ your client:
 - [Kiro](https://kiro.dev/docs/powers/installation/): use **Powers → Add Custom Power**.
 - [ChatGPT and Codex](https://developers.openai.com/plugins): install through OpenAI's plugin
   directory.
+- [Grok Build](https://github.com/xai-org/plugin-marketplace): open `/plugin`, search for
+  **Mobbin**, and install the plugin.
 
 Claude Code is not an Agent Plugins-compatible client; use Mobbin's
 [`claude mcp add` setup](https://docs.mobbin.com/mcp/clients/claude-code) instead.