diff --git a/.github/plugin/marketplace.json b/.github/plugin/marketplace.json
index 3cbfba9a00..6dbe55c994 100644
--- a/.github/plugin/marketplace.json
+++ b/.github/plugin/marketplace.json
@@ -54,6 +54,35 @@
       "description": "See a live map of the Copilot agents on your computer, their sub-agents, their commands, and where their data goes.",
       "version": "1.0.0"
     },
+    {
+      "name": "agentcouncil",
+      "description": "Multi-model council for Copilot CLI: three subagents on different model families (Anthropic, OpenAI, Google) answer independently, then build on each other or attack the leading answer before an orchestrator writes the final result from anonymized inputs.",
+      "version": "2.0.0",
+      "author": {
+        "name": "Shlomi Shaki",
+        "url": "https://github.com/Sentry01"
+      },
+      "repository": "https://github.com/Sentry01/AgentCouncil",
+      "license": "MIT",
+      "keywords": [
+        "multi-agent",
+        "multi-model",
+        "council",
+        "debate",
+        "brainstorm",
+        "stress-test",
+        "adversarial",
+        "collaborative",
+        "orchestration",
+        "second-opinion"
+      ],
+      "source": {
+        "source": "github",
+        "repo": "Sentry01/AgentCouncil",
+        "ref": "v2.0.0",
+        "sha": "abad48ddd3117056bbda12f2f7e87142d8c43369"
+      }
+    },
     {
       "name": "ai-ready",
       "description": "Analyze any repository and generate AI-ready configuration — AGENTS.md, copilot-instructions.md, CI workflows, issue templates, and more. Mines your PR review patterns and creates files customized to your stack.",
diff --git a/plugins/external.json b/plugins/external.json
index ae7c5e5011..a6102182f9 100644
--- a/plugins/external.json
+++ b/plugins/external.json
@@ -26,6 +26,35 @@
       "ref": "v0.1.3"
     }
   },
+  {
+    "name": "agentcouncil",
+    "description": "Multi-model council for Copilot CLI: three subagents on different model families (Anthropic, OpenAI, Google) answer independently, then build on each other or attack the leading answer before an orchestrator writes the final result from anonymized inputs.",
+    "version": "2.0.0",
+    "author": {
+      "name": "Shlomi Shaki",
+      "url": "https://github.com/Sentry01"
+    },
+    "repository": "https://github.com/Sentry01/AgentCouncil",
+    "license": "MIT",
+    "keywords": [
+      "multi-agent",
+      "multi-model",
+      "council",
+      "debate",
+      "brainstorm",
+      "stress-test",
+      "adversarial",
+      "collaborative",
+      "orchestration",
+      "second-opinion"
+    ],
+    "source": {
+      "source": "github",
+      "repo": "Sentry01/AgentCouncil",
+      "ref": "v2.0.0",
+      "sha": "abad48ddd3117056bbda12f2f7e87142d8c43369"
+    }
+  },
   {
     "name": "ai-ready",
     "description": "Analyze any repository and generate AI-ready configuration — AGENTS.md, copilot-instructions.md, CI workflows, issue templates, and more. Mines your PR review patterns and creates files customized to your stack.",