For AI agents: The documentation index is at https://docs.digitalocean.com/llms.txt. Markdown versions of pages use the same URL with index.html.md in place of the HTML page (for example, append index.html.md to the directory path instead of opening the HTML document).

You can no longer install extensions on PostgreSQL Advanced Edition clusters with CREATE EXTENSION. The pre-installed pg_repack, pg_stat_statements, pgaudit, plpgsql, and vector extensions remain available. To request another extension, contact support. See Supported PostgreSQL Extensions.