diff --git a/CLAUDE.md b/CLAUDE.md
index a1dc0b9..6c8eb63 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -130,3 +130,10 @@ See subproject CLAUDE.md files for component-specific key files.
 ### Code Style
 - Order functions top-down by abstraction (public API first, helpers below)
 - Keep `CLAUDE.md` files updated when introducing architectural changes
+
+### Playwright MCP
+- When using the Playwright MCP, an authentication is needed
+- Use the following credentials for testing:
+  - Username: denis
+  - Password: 123
+- The login is 2-step: first submit the username, then the password on the next screen