claude-code - 💡(How to fix) Fix Claude in Chrome blocks access to aircraft-engineer-sakura.com with "Navigation to this domain is not allowed" [2 comments, 2 participants]

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anthropics/claude-code#52994Fetched 2026-04-25 06:15:15
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Error Message

  1. Error: "Navigation to this domain is not allowed"

Root Cause

Root Cause (investigated)

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Bug Description

aircraft-engineer-sakura.com is consistently blocked when using Claude in Chrome (Claude Code desktop), returning "Navigation to this domain is not allowed".

The same domain is also blocked in Claude Cowork.

luana-travel.com (another WordPress site) works fine with the same setup.

Root Cause (investigated)

After examining the extension code in mcpPermissions-BSnCI2j1.js and PermissionManager-ILKpktAR.js, the domain appears to be filtered by Anthropic's URL categorization system (getCategory()), likely due to the word "aircraft" in the domain name causing misclassification.

The turnApprovedDomains check blocks the domain before persisted permissions are even evaluated.

Steps to Reproduce

  1. Open Claude Code desktop with Claude in Chrome extension
  2. Ask Claude to navigate to https://aircraft-engineer-sakura.com/wp-admin/
  3. Error: "Navigation to this domain is not allowed"

Expected Behavior

The domain should be accessible since it is a legitimate WordPress blog about aviation.

Environment

  • Claude Code desktop (Mac)
  • Claude in Chrome extension v1.0.69
  • Domain: aircraft-engineer-sakura.com

extent analysis

TL;DR

The issue can likely be resolved by whitelisting the aircraft-engineer-sakura.com domain in the Anthropic's URL categorization system or modifying the getCategory() function to correctly classify the domain.

Guidance

  • Investigate the getCategory() function in PermissionManager-ILKpktAR.js to understand how the domain is being misclassified and consider modifying it to correctly categorize domains with the word "aircraft".
  • Verify that the turnApprovedDomains check is indeed blocking the domain by debugging the mcpPermissions-BSnCI2j1.js code.
  • Reach out to Anthropic's support to report the misclassification issue and request assistance with whitelisting the domain.
  • Test the domain with a different extension or setup to confirm that the issue is specific to the Claude in Chrome extension.

Example

No code example is provided as the issue is related to a specific extension and its internal implementation.

Notes

The solution may require coordination with Anthropic's support team to resolve the domain misclassification issue. The fix may also depend on the specific implementation details of the getCategory() function and the turnApprovedDomains check.

Recommendation

Apply a workaround by reaching out to Anthropic's support to request assistance with whitelisting the domain, as modifying the extension's internal code may not be feasible or recommended.

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claude-code - 💡(How to fix) Fix Claude in Chrome blocks access to aircraft-engineer-sakura.com with "Navigation to this domain is not allowed" [2 comments, 2 participants]