Add external plugin pm-skills (#1770)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

.github/plugin/marketplace.json

@@ -579,6 +579,34 @@
       "description": "Comprehensive resources for building Model Context Protocol servers using the official PHP SDK with attribute-based discovery, including best practices, project generation, and expert assistance",
       "version": "1.0.0"
     },
+    {
+      "name": "pm-skills",
+      "description": "MCP server and 12 skills for product analysis, specification writing, strategy, narrative, and stakeholder alignment. Run competitive analyses, write zero-question specs, design metrics, and produce executive-ready documents directly from Copilot.",
+      "version": "2.1.0",
+      "author": {
+        "name": "Parth Sangani",
+        "url": "https://github.com/Avyayalaya"
+      },
+      "repository": "https://github.com/Avyayalaya/pm-skills-arsenal",
+      "license": "MIT",
+      "keywords": [
+        "product-management",
+        "competitive-analysis",
+        "specification-writing",
+        "product-strategy",
+        "go-to-market",
+        "metrics",
+        "discovery-research",
+        "narrative",
+        "stakeholder-alignment",
+        "mcp"
+      ],
+      "source": {
+        "source": "github",
+        "repo": "Avyayalaya/pm-skills-arsenal",
+        "ref": "refs/tags/v2.1.0"
+      }
+    },
     {
       "name": "power-apps-code-apps",
       "source": "power-apps-code-apps",

plugins/external.json

@@ -310,6 +310,34 @@
       "path": "plugins/modernize-dotnet"
     }
   },
+  {
+    "name": "pm-skills",
+    "description": "MCP server and 12 skills for product analysis, specification writing, strategy, narrative, and stakeholder alignment. Run competitive analyses, write zero-question specs, design metrics, and produce executive-ready documents directly from Copilot.",
+    "version": "2.1.0",
+    "author": {
+      "name": "Parth Sangani",
+      "url": "https://github.com/Avyayalaya"
+    },
+    "repository": "https://github.com/Avyayalaya/pm-skills-arsenal",
+    "license": "MIT",
+    "keywords": [
+      "product-management",
+      "competitive-analysis",
+      "specification-writing",
+      "product-strategy",
+      "go-to-market",
+      "metrics",
+      "discovery-research",
+      "narrative",
+      "stakeholder-alignment",
+      "mcp"
+    ],
+    "source": {
+      "source": "github",
+      "repo": "Avyayalaya/pm-skills-arsenal",
+      "ref": "refs/tags/v2.1.0"
+    }
+  },
   {
     "name": "skills-for-copilot-studio",
     "description": "Microsoft Copilot Studio plugins for AI coding agents",