You can now use Claude Code as the agent in Splitleaf. Splitleaf uses the Claude Code that is installed on your Mac and the Claude account you sign in to it with. Usage counts against your Claude plan. You do not need an API key.
To connect, open Site settings > Agent connections. If Claude Code is not installed or is too old, the card tells you what to do. Then select Claude Code in the agent chat. The first time you use it on a site, Splitleaf asks you to agree before your site files go to Claude.