Slack Token Extractor

A Chrome extension that extracts your Slack xoxc token and xoxd cookie with one click — useful for local tools that need Slack API access (e.g., MCP servers).

Install

1. Open chrome://extensions/
2. Enable Developer mode (top-right toggle)
3. Click Load unpacked and select this directory

Usage

1. Navigate to your Slack workspace in Chrome (must be on a *.slack.com/client/... URL)
2. Click the extension icon in your toolbar
3. It automatically extracts:
   • The xoxc token from localStorage
   • The d cookie from slack.com
4. Click "Copy shell command to update files"
5. Paste in your terminal — it writes the values to ~/.SLACK-XOXC and ~/.SLACK-XOXD

Why?

Slack's browser session tokens (xoxc + xoxd cookie) are required by tools like slack-mcp-server that interact with Slack on your behalf. These tokens rotate periodically and need manual extraction from Chrome DevTools. This extension makes that a one-click operation.

Security

• This extension only activates on *.slack.com pages
• Tokens are never sent anywhere — they're only displayed locally and copied to your clipboard
• Review the source code yourself; it's ~80 lines of JS