diff --git a/.claude/CLAUDE.md b/.claude/CLAUDE.md
index 29a8c52..529c002 100644
--- a/.claude/CLAUDE.md
+++ b/.claude/CLAUDE.md
@@ -53,4 +53,6 @@ This is a WordPress site for Conseil de la culture de l'Abitibi-Témiscamingue w
 - GraphQL endpoint: https://wp.cultureat.ca/graphql
 - Frontend URL: https://cultureat.ca
 - Uses Cloudflare Workers for hosting the Nuxt frontend
-- WordPress serves as headless CMS with custom post types for cultural content management
\ No newline at end of file
+- WordPress serves as headless CMS with custom post types for cultural content management
+- GraphQL operations should be in the same directory where they are used
+- WordPress filters and actions hooks should use named functions prefixed with ccat_ defined the line after add_action / add_filter
\ No newline at end of file