How do you want to use Chartnaut?

It's the same Chartnaut everywhere. The desktop app can also run on the Claude Code or Codex subscription you already pay for.

Works withCodexClaude Code

Windows

Windows 10 or later

Download

Mac

macOS 12 or later

Download

Web

Nothing to install

Open in browser

MCP

For AI apps

Rather stay in Claude or ChatGPT? Bring Chartnaut to them.

For the best experience, use Chartnaut Desktop, which runs Claude Code and Codex natively. Prefer to work in Claude, ChatGPT or Cursor directly? Connect them over MCP: you approve what each can do, and can disconnect it any time.

Add it as a custom connector in Claude or ChatGPT

https://api.chartnaut.com/v1/mcp

Or in Claude Code, then sign in from /mcp

claude mcp add --transport http --scope user chartnaut https://api.chartnaut.com/v1/mcp

Read the MCP guide

CLI

For developers

Chartnaut, from your terminal. Or from your agent.

Write indicators, definitions and studies in your own editor, run them on any instrument and read the results right there. Or open Claude Code or Codex in the folder and let the agent build them for you. It all runs on Chartnaut, so there's nothing else to set up.

Install

curl -fsSL https://chartnaut.com/install.sh | sh

Then sign in and you're ready

chartnaut login

View the source on GitHub