Claude in Chrome: navigate always fails with "Navigation to this domain is not allowed"

Description

Every call to the Claude in Chrome navigate tool fails with the error Navigation to this domain is not allowed, regardless of the target domain (reproduced against multiple unrelated sites, not just one). list_connected_browsers correctly shows exactly one local, connected browser, so the extension believes it is connected — the failure happens specifically on navigate.

Environment

• Windows 11 Pro
• Claude desktop app (Code tab)

Steps to reproduce

1. Open a Claude Code session in the desktop app with browser tools available.
2. Call the Claude in Chrome navigate tool with any URL (e.g. https://example.com/).
3. Observe the error: Navigation to this domain is not allowed.

This reproduces on a brand new tab, a brand new tab group, and across multiple different target domains — not specific to one site.

What I've already tried (none resolved it)

• Reloaded the Claude in Chrome extension from chrome://extensions/
• Fully restarted Chrome and re-authenticated
• Force-killed the Claude desktop app process via Task Manager and restarted it (waited ~1 minute before reopening)
• Completely uninstalled and reinstalled the Claude in Chrome extension, resulting in a fresh device pairing (list_connected_browsers shows a new deviceId and fresh connectedAt timestamp each time)
• Checked local Claude Code permission config (settings.local.json) — mcp__claude-in-chrome__navigate is explicitly present in the allow list, so this isn't a local permission-file denial
• Opened the Claude side panel directly inside Chrome to check for a pending approval/consent prompt — none found

Expected behavior

navigate should successfully load the requested URL given a connected, local browser.

Actual behavior

navigate always returns Navigation to this domain is not allowed, for every domain tried, across fresh installs/pairings.

🤖 Generated with Claude Code