TL;DR

• Claude Code prints mermaid as source and tool calls as walls of text. prismantis draws them: real charts and flowcharts, typeset LaTeX math in kitty and Ghostty, colored tables and code, and quiet tool rows.
• 16 palettes plus mono, and copy buttons on everything.
• Two commands to install, /plugin to turn it off. Claude Code’s own renderer comes back the moment you do.
• No network calls. It runs a program only when you click ⧉ html or ▣ png (the clipboard helper) or turn on LaTeX (RaTeX’s renderer).

/plugin marketplace add NahumLitvin/prismantis

/plugin install prismantis@prismantis

Then run /prismantis setup to pick a theme and styles from drawn samples, and /prismantis demo for a tour of the main features. In a terminal, setup opens a pane: the arrows or Tab move through the styles of a step with a preview of the one in focus, Enter saves it and shows the next step. Where the session has no terminal, as in the desktop app, it walks the same steps in the transcript.

Install

Requires Claude Code 2.1.287 or later. Run the two commands above.

To update, run this, then /reload in every open session. A session keeps the version…