Night Reef

The lagoon after dark: a turtle and a ray that glow as they swim.

Made for dark windows, by Anthropic

Install it

Copy the prompt for your app and paste it into your agent. It walks you through the rest.

In a terminal, install the agentthemes plugin once:

claude plugin install agentthemes --marketplace https://bestagentthemes.com/marketplace.json

Then, in a Claude Code session in the Claude desktop app, type these two:

/reload-plugins

/agentthemes night-reef

It shows behind the chat after your next message. /agentthemes off clears it.

Download night-reef.json, then run this where you saved it:

t3 theme set night-reef.json

The scene shows as a still picture, and it needs a T3 Code build with custom theme CSS. t3 theme set t3-chat goes back.