Install on Antigravity
Antigravity uses a global MCP config file. Open it from Settings → Customizations, paste the config, and restart.
node --versionOpen Settings → Customizations → Open MCP Config
Open Antigravity Settings and navigate to Customizations. Under Installed MCP Servers, click Open MCP Config to open the global config file.

Paste the Veilguard config into mcp_config.json
The mcp_config.json file will open. Paste the following config (or add the veilguard block into an existing mcpServers object):
{
"mcpServers": {
"veilguard": {
"command": "npx",
"args": ["-y", "--package=veilguard", "veilguard-mcp"],
"env": {
"VEILGUARD_KEY": ""
}
}
}
}
Save, then click Refresh in Customizations
Save the config file. Go back to Settings → Customizations and click Refresh. You should see veilguard listed under Installed MCP Servers with a green dot and 14 tools enabled.


Verify it's working
Open a new Antigravity agent chat and ask: "Run a full audit for this project". Veilguard will run all 14 security scanners and return a detailed report with findings.

Add your Pro key (optional)
Go back to Settings → Customizations and click Open MCP Config again. Replace the empty string on VEILGUARD_KEY with your license key, save, and click Refresh.

Get a Pro key at veilguard.dev/pro. Keys look like vg_live_xxxxxxxxxxxxxxxxxxxx.
Notes
- •The MCP config is stored at
~/.gemini/antigravity/mcp_config.json— it applies globally to all Antigravity projects. - •Click Refresh in Customizations after any config change — no full restart required.
- •For auto-scanning, download the rules template to your project root.