Support Dia browser for /chrome (claude-in-chrome)

[bucky0112]

Feature Request

Add Dia browser support for the /chrome (claude-in-chrome) browser automation feature.

Context

Dia is a Chromium-based browser that supports Chrome extensions. The Claude extension (fcoeoabgfenejglbffodgkkbkcdhcgfn) installs and runs correctly in Dia — the Claude Browser Extension sidebar works fine, confirming Native Messaging is functional.

However, Claude Code's switch_browser does not detect Dia as an available browser, even after manually copying the Native Messaging Host config to Dia's Application Support directory.

Details

• Dia's bundle identifier: company.thebrowser.dia
• Dia's Application Support path: ~/Library/Application Support/Dia/
• Dia's User Data path: ~/Library/Application Support/Dia/User Data/
• Chrome extension works in Dia: Yes (Claude Browser Extension sidebar is fully functional)
• Native Messaging Host files copied to both paths: Still not detected by switch_browser

Currently supported browsers

Based on the Native Messaging Host registration, Claude Code currently supports:

• Google Chrome
• Chromium
• Microsoft Edge
• Arc
• Vivaldi
• Brave
• Opera

Expected behavior

Dia should be recognized as a valid browser target for /chrome, similar to how Arc (another non-standard Chromium browser) is supported.

Environment

• macOS
• Dia browser (Chromium-based, dia:// protocol)
• Claude Code CLI

[github-actions]

Found 3 possible duplicate issues:

1. [FEATURE] Detect Claude Chrome extension in other Chromium-based browsers #14370
2. feat: Add env var for custom Chromium browser path #18075
3. [BUG] Claude in Chrome MCP fails to connect to Chromium Browser — always launches Google Chrome instead #32976

This issue will be automatically closed as a duplicate in 3 days.

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🤖 Generated with Claude Code

[github-actions]

This issue has been automatically closed as a duplicate of #14370.

If this is incorrect, please re-open this issue or create a new one.

🤖 Generated with Claude Code

[github-actions]

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.