diff --git a/.gitignore b/.gitignore
index b6c612a4..5e6f7252 100644
--- a/.gitignore
+++ b/.gitignore
@@ -249,3 +249,6 @@ graphify-out/
 
 # remember skill runtime state (hook logs, PIDs)
 .remember/
+
+# MCP server config (per-machine, references local env vars for auth)
+.mcp.json