---
id: "dbac36d9-85a0-4ec4-a5cc-f01a0382b96d"
name: "Chrome CDP Internal Targets"
micro_summary: "Identifies Chrome internal CDP targets returned by list_tabs(), explains why they recur, and advises filtering chrome:// targets from user tabs."
status: "resolved"
see_also: []
scope: "Chrome internal CDP targets that appear in list_tabs() output. How to identify, filter, and handle them so agents don't mistake Chrome internals for user tabs."
warnings: "## Chrome Internal Targets\n\n`list_tabs()` returns **all CDP targets**, not just user tabs. Chrome always exposes internal UI targets that can't be closed and respawn on every launch.\n\n### Omnibox Popups\n\nTwo internal targets are always present:\n\n| Title | URL |\n|-------|-----|\n| Omnibox Popup | `chrome://omnibox-popup.top-chrome/` |\n| Omnibox Popup | `chrome://omnibox-popup.top-chrome/omnibox_popup_aim.html` |"
---
## Chrome Internal Targets

`list_tabs()` returns **all CDP targets**, not just user tabs. Chrome always exposes internal UI targets that can't be closed and respawn on every launch.

### Omnibox Popups

Two internal targets are always present:

| Title | URL |
|-------|-----|
| Omnibox Popup | `chrome://omnibox-popup.top-chrome/` |
| Omnibox Popup | `chrome://omnibox-popup.top-chrome/omnibox_popup_aim.html` |

These are Chrome's address bar rendering targets. They:
- **Cannot be permanently closed** — `Target.closeTarget` works momentarily but they respawn
- **Appear on every Chrome launch** — confirmed by killing and relaunching Chrome
- **Are not user tabs** — never interact with them

### Filtering user tabs

When using `list_tabs()`, filter out internal targets:

```python
tabs = list_tabs()
user_tabs = [t for t in tabs if not t['url'].startswith('chrome://')]
```

Or check for `chrome://` URLs to identify Chrome internals.

### Other internal URLs to watch for

- `chrome://` — Chrome internal pages
- `devtools://` — DevTools internal pages
- `chrome-extension://` — Extension pages (may or may not be relevant)

### Rule

**Always filter `chrome://` URLs from `list_tabs()` output** before treating results as user tabs. Agents should only interact with `http://` / `https://` / `file://` / `about:` targets.