Add mongodb-atlas plugin

Driver: dir-plugin-add-official

.claude-plugin/marketplace.json

@@ -2346,6 +2346,22 @@
       },
       "homepage": "https://www.mongodb.com/docs/mcp-server/overview/"
     },
+    {
+      "name": "mongodb-atlas",
+      "description": "Connect to MongoDB Atlas clusters only through the Atlas Managed MCP Server. Sign in with your Atlas account to explore data, manage collections, optimize queries, generate reliable code with MongoDB best practices, and manage Atlas resources such as clusters, projects, database users, and network access. If you are running a different MongoDB deployment or want to run a local MongoDB MCP Server, install the MongoDB (Self-Managed MCP) plugin instead.",
+      "author": {
+        "name": "MongoDB"
+      },
+      "category": "database",
+      "source": {
+        "source": "git-subdir",
+        "url": "https://github.com/mongodb/agent-skills.git",
+        "path": "plugins/mongodb-atlas",
+        "ref": "main",
+        "sha": "b4ea8150a020b9babaddc6c271c6dc177c06a83f"
+      },
+      "homepage": "https://www.mongodb.com/docs/mcp-server/get-started/"
+    },
     {
       "name": "neon",
       "description": "Manage your Neon projects and databases with the neon-postgres agent skill and the Neon MCP Server.",