diff --git a/.agents/external-skills.json b/.agents/external-skills.json
index 0967ef4..aa38086 100644
--- a/.agents/external-skills.json
+++ b/.agents/external-skills.json
@@ -1 +1,12 @@
-{}
+{
+  "swiftui-pro": {
+	"repo": "twostraws/swiftui-agent-skill",
+	"path": "swiftui-pro",
+	"ref": "61b74001b64b292da8397355464d7c8a4c2c7d89"
+  },
+  "swift-concurrency-pro": {
+	"repo": "twostraws/Swift-Concurrency-Agent-Skill",
+	"path": "swift-concurrency-pro",
+	"ref": "e710f8d577ccbff1ac047aac1594a5683000cb0b"
+  }
+}
diff --git a/.agents/skills/.gitignore b/.agents/skills/.gitignore
new file mode 100644
index 0000000..4ac8f97
--- /dev/null
+++ b/.agents/skills/.gitignore
@@ -0,0 +1,3 @@
+# External skills — fetched via ./sync-agents --install
+/swift-concurrency-pro/
+/swiftui-pro/