Add honeycomb plugin (#3404)

.claude-plugin/marketplace.json

@@ -1426,6 +1426,22 @@
       "source": "./external_plugins/greptile",
       "homepage": "https://github.com/anthropics/claude-plugins-public/tree/main/external_plugins/greptile"
     },
+    {
+      "name": "honeycomb",
+      "description": "Skills, agents, and workflows for Honeycomb observability — query patterns, production investigations, SLOs, OpenTelemetry instrumentation, and Beeline migration. Designed to complement the Honeycomb MCP server.",
+      "author": {
+        "name": "Honeycomb"
+      },
+      "category": "monitoring",
+      "source": {
+        "source": "git-subdir",
+        "url": "https://github.com/honeycombio/agent-skill.git",
+        "path": "honeycomb",
+        "ref": "main",
+        "sha": "53e6bb80242d4667dd730e7cc2150a4a2f9a83bf"
+      },
+      "homepage": "https://www.honeycomb.io"
+    },
     {
       "name": "hookify",
       "description": "Easily create custom hooks to prevent unwanted behaviors by analyzing conversation patterns or from explicit instructions. Define rules via simple markdown files.",