mozilla has a new mcp server for MDN

claude mcp add --transport http mdn https://mcp.mdn.mozilla.net/

Here's how to get antigravity cli working on MidnightBSD or FreeBSD. You must use linux emulation.

Download the install.sh script they provide. Edit it to print out the download URL it's using via echo.

Manually download the software with curl or wget. (the script won't work even if run from linux bash)

extract it and copy the binary to /usr/local/bin/agy

Add { "enableTerminalSandbox": false} to the antigravity cli settings.json inside the .gemini/antigravity-cli folder in your home directory. Turn off all sandox features for it to work right.

Login when prompted. You may need to copy the URL from the terminal, remove the extra spaces in it, and then paste in your browser to do so.