Add sanity-plugin to marketplace

.claude-plugin/marketplace.json

@@ -686,17 +686,18 @@
       "homepage": "https://github.com/semgrep/mcp-marketplace.git"
     },
     {
-      "name": "zapier",
-      "description": "Connect 8,000+ apps to your AI workflow. Discover, enable, and execute Zapier actions directly from your client.",
-      "category": "productivity",
-      "source": {
-        "source": "git-subdir",
-        "url": "zapier/zapier-mcp",
-        "path": "plugins/zapier",
-        "ref": "main",
-        "sha": "b93007e9a726c6ee93c57a949e732744ef5acbfd"
+      "name": "sanity-plugin",
+      "description": "Sanity content platform integration with MCP server, agent skills, and slash commands. Query and author content, build and optimize GROQ queries, design schemas, and set up Visual Editing.",
+      "category": "development",
+      "author": {
+        "name": "Sanity"
       },
-      "homepage": "https://github.com/zapier/zapier-mcp/tree/main/plugins/zapier"
+      "source": {
+        "source": "url",
+        "url": "https://github.com/sanity-io/agent-toolkit.git",
+        "sha": "4b1fb10bd707a22cf0cdfad5374ffc885f2ffa8d"
+      },
+      "homepage": "https://www.sanity.io"
     }
   ]
 }