diff --git a/.gitignore b/.gitignore
index e62efc9..6acf860 100644
--- a/.gitignore
+++ b/.gitignore
@@ -46,6 +46,10 @@ testem.log
 .DS_Store
 Thumbs.db
 
+# Claude Code worktrees/session state, graphify knowledge-graph output
+.claude/
+graphify-out/
+
 <!-- barry-cache:start -->
 .context-state/
 .context-cache/