During June 2025, Benjamin Mitzkus focused on improving authentication reliability for client applications using Apollo Client with Supabase in the supabase/pg_graphql repository. He addressed a critical bug by ensuring the SUPABASE_ANON_KEY was correctly propagated in Apollo Client authorization headers, thereby stabilizing authentication flows for GraphQL clients. His technical approach involved updating the relevant Markdown documentation and verifying end-to-end header propagation, which reduced authentication-related edge cases. Benjamin’s work emphasized security-conscious handling of authentication headers and enhanced the overall developer experience. His contributions primarily leveraged skills in documentation and proficiency with Markdown, reflecting a targeted and in-depth engineering effort.