Environment variable HEADLESS
No value of this variable is held in this registry. The registry knows only the name the source states.
Entries naming HEADLESS as an ordinary environment variable
| Gmail | io.github.mcp-z/mcp-gmail |
|---|---|
| Google Drive | io.github.mcp-z/mcp-drive |
| Google Sheets | io.github.mcp-z/mcp-sheets |
| Outlook | io.github.mcp-z/mcp-outlook |
| Three.js DevTools MCP | io.github.DmitriyGolub/threejs-devtools |
| Web Task | io.github.jojo-labs/web-task-api |
| Web Task | io.github.rich-jojo/web-task-api |
| com.pulsemcp/fetchpet | com.pulsemcp/fetchpet |
| com.pulsemcp/good-eggs | com.pulsemcp/good-eggs |
| com.pulsemcp/playwright-stealth | com.pulsemcp/playwright-stealth |
Entries naming HEADLESS as a secret required variable
No entry.
What the sources write about this name
| Gmail | Disable browser auto-open, return auth URL instead (true/false) |
|---|---|
| Google Drive | Disable browser auto-open, return auth URL instead (true/false) |
| Google Sheets | Disable browser auto-open, return auth URL instead (true/false) |
| Outlook | Disable browser auto-open, return auth URL instead (true/false) |
| Three.js DevTools MCP | Set to 'true' for headless browser mode (CI) |
| Web Task | Optional browser headless toggle. Set `false` to prefer a visible browser. |
| Web Task | Optional browser headless toggle. Set `false` to prefer a visible browser. |
| com.pulsemcp/fetchpet | Run browser in headless mode (true/false). |
| com.pulsemcp/good-eggs | Run browser in headless mode (true/false). |
| com.pulsemcp/playwright-stealth | Run browser in headless mode. |
Taken verbatim from the source, one line per entry. The text is a vendor's own statement and is neither checked nor shortened.
To the environment variable index
Version of the extraction rule: 1.1. The names are formed by splitting the stored raw declaration at the separator this registry set when reading it in. Counted across the 24,717 published entries.
tracevero · https://tracevero.com/variable/HEADLESS