diff --git a/.agents/plugins/marketplace.json b/.agents/plugins/marketplace.json
index 921c06b2..02e34051 100644
--- a/.agents/plugins/marketplace.json
+++ b/.agents/plugins/marketplace.json
@@ -60,7 +60,8 @@
         "authentication": "ON_INSTALL"
       },
       "category": "Development & Workflow",
-      "description": "Multi-agent codebase knowledge graph generator with context-aware planning and automatic scope management — turns codebases into coherent agent workspaces."
+      "description": "Multi-agent codebase knowledge graph generator with context-aware planning and automatic scope management — turns codebases into coherent agent workspaces.",
+      "icon": "./plugins/study8677/antigravity-workspace-template/assets/icon.png"
     },
     {
       "name": "archcore",
diff --git a/plugins/study8677/antigravity-workspace-template/.codex-plugin/plugin.json b/plugins/study8677/antigravity-workspace-template/.codex-plugin/plugin.json
index 7d39b821..2d89ecb4 100644
--- a/plugins/study8677/antigravity-workspace-template/.codex-plugin/plugin.json
+++ b/plugins/study8677/antigravity-workspace-template/.codex-plugin/plugin.json
@@ -2,5 +2,8 @@
   "name": "antigravity",
   "version": "0.2.1",
   "description": "Repository knowledge engine plugin (Codex CLI). Bundles slash commands (/ag-setup, /ag-init, /ag-refresh, /ag-ask) plus the agent-repo-init skill. Backed by the ag-ask / ag-refresh CLI; MCP optional.",
-  "skills": "./skills/"
+  "skills": "./skills/",
+  "interface": {
+    "composerIcon": "./assets/icon.png"
+  }
 }
diff --git a/plugins/study8677/antigravity-workspace-template/assets/icon.png b/plugins/study8677/antigravity-workspace-template/assets/icon.png
new file mode 100644
index 00000000..7bda1e81
Binary files /dev/null and b/plugins/study8677/antigravity-workspace-template/assets/icon.png differ