openchat_demo.mp4
An open format for sharing conversation histories across different AI chat UIs.
Just talk to your chat client as you would normally, OpenChat will sync the conversation in the background, letting you swap in and out of different clients while maintaining your entire conversation history.
How It Works
Browser Extension
A browser extension that captures requests when you're on supported platforms (i.e. chatgpt.com or claude.ai) and saves your conversation history locally in the browser.
MCP (optional)
An MCP server that opens a local HTTP server to get the latest conversation history from the browser extension. It exposes the conversations as markdown formatted MCP Resources that you can directly reference inside your coding agent's terminal session.
You can also use the MCP server on any client that supports it, like Claude Desktop or Open WebUI.
Setup
Note: We're early. Once the extension is published to the Chrome Web Store you can download it from there.
- Download the latest release of the extension from the releases page
- Install the extension in Chrome (go to
chrome://extensions/, turn on "Developer mode" and clickLoad unpackedand select the extension file you just downloaded)
You're good to go! OpenChat will automatically intercept requests to chatgpt.com and claude.ai and save the conversation history to your browser's local storage. You can pin the extension to the toolbar and click its icon to view your entire conversation history.
MCP Server
If you want to pull conversations into your terminal agents, you can use the MCP server.
The command to run the MCP server is npx @p0u4a/openchat. You can add this to your agent's config.
For Claude Code
claude mcp add --transport stdio openchat -- "npx @p0u4a/openchat"
For Codex
codex mcp add openchat -- npx -y @p0u4a/openchat
Supported Platforms
- ChatGPT
- Claude
- Claude Desktop
- Claude Code
- Codex
TODO
- Support more content blocks (e.g. artifacts)
- Gemini Support?
- Ollama Support?