diff --git a/nexus-dev/.claude-plugin/plugin.json b/nexus-dev/.claude-plugin/plugin.json
new file mode 100644
index 0000000..154e28a
--- /dev/null
+++ b/nexus-dev/.claude-plugin/plugin.json
@@ -0,0 +1,11 @@
+{
+  "name": "nexus-dev",
+  "version": "0.1.0",
+  "description": "Projekt-Plugin für nexus (Family Knowledge Hub): SDD-Karten-Workflow, Security/Privacy-Invarianten (SICHT/PRIV/fail-closed), Karten-Command. Für Claude Code Sessions im Repo l.kirchner/nexus-hub.",
+  "author": {
+    "name": "l.kirchner",
+    "url": "https://gitea.luki-net.org/l.kirchner"
+  },
+  "homepage": "https://gitea.luki-net.org/l.kirchner/nexus-hub",
+  "keywords": ["nexus", "sdd", "fastapi", "privacy", "acl"]
+}