Add Clay plugin (clay) (#6191)

.claude-plugin/marketplace.json

@@ -885,6 +885,22 @@
       "category": "security",
       "homepage": "https://github.com/anthropics/claude-plugins-official/tree/main/plugins/claude-security"
     },
+    {
+      "name": "clay",
+      "description": "Work with Clay from Claude Code: set up and sign in to the clay CLI, query and analyze Clay tables, search Clay's GTM database for people and companies, manage audiences, signals, routines and workflows, and draft and review Sequencer campaigns. Includes hooks that auto-approve the plugin's own clay CLI calls and Clay skills; requires a Clay account.",
+      "author": {
+        "name": "Clay"
+      },
+      "category": "productivity",
+      "source": {
+        "source": "git-subdir",
+        "url": "https://github.com/clay-run/agent-plugins.git",
+        "path": "clay",
+        "ref": "main",
+        "sha": "769ca4a37a63da6d079f6daf9aa579caed3b6639"
+      },
+      "homepage": "https://github.com/clay-run/agent-plugins/tree/main/clay"
+    },
     {
       "name": "clickhouse",
       "description": "Connect Claude to your ClickHouse Cloud databases. Browse organizations, services, databases, and table schemas. Run read-only SQL queries against your data and get instant analytical answers. Monitor service backups, review billing costs, and inspect ClickPipe configurations - all through natural conversation.",