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claude-code - 💡(How to fix) Fix [BUG] Desktop Personal marketplace no longer accepts custom Git hosts even when domain allowlist permits them [1 comments, 2 participants]

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anthropics/claude-code#48330•Fetched 2026-04-16 07:02:46
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arawnarawn
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Error Message

Error Messages/Logs

Root Cause

Because the host is blocked before sync starts, private/internal plugin marketplaces on custom Git infrastructure are no longer usable through the Personal marketplace flow.

Code Example

Claude Desktop reports that the marketplace host is unsupported and blocks the add flow before sync begins.
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Preflight Checklist

  • I have searched existing issues and this hasn't been reported yet
  • This is a single bug report (please file separate reports for different bugs)
  • I am using the latest version of Claude Code

What's Wrong?

Claude Desktop Personal plugin marketplaces appear to reject custom/private Git hosts before network/domain allowlist settings can apply.

This looks like a regression. Previously, I was able to use a private/self-hosted Git marketplace host when it was reachable and allowed by Desktop settings. Now the Desktop UI rejects the host earlier in the flow as unsupported.

Because the host is blocked before sync starts, private/internal plugin marketplaces on custom Git infrastructure are no longer usable through the Personal marketplace flow.

What Should Happen?

If a custom/private Git host is explicitly allowed by Claude Desktop network/domain settings, Claude Desktop should allow the marketplace sync attempt to proceed.

At minimum, marketplace host validation should not reject an explicitly allowed host before the network policy has a chance to apply.

<img width="1246" height="894" alt="Image" src="https://github.com/user-attachments/assets/781c2448-1e06-4ee3-a8cf-e4e25a09a195" />

Error Messages/Logs

Claude Desktop reports that the marketplace host is unsupported and blocks the add flow before sync begins.

Steps to Reproduce

  1. Open Claude Desktop.
  2. Enable Allow network egress.
  3. Add a custom/private Git host to the Desktop domain allowlist.
  4. Open Customize > Plugins.
  5. Try to add a plugin marketplace from a private/self-hosted Git repository URL.
  6. Observe that the Desktop UI rejects the host before sync begins.

Claude Model

Other

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

Claude 1.2581.0 (f10398) 2026-04-14T17:16:40.000Z

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Other

Additional Information

No response

extent analysis

TL;DR

The issue can be mitigated by re-examining the network/domain allowlist settings in Claude Desktop to ensure the custom Git host is correctly configured.

Guidance

  • Review the Allow network egress setting to confirm it is enabled, as this might affect the allowlist's application.
  • Verify that the custom/private Git host is correctly added to the Desktop domain allowlist, ensuring the URL or domain is accurately specified.
  • Check if there are any specific requirements or formats for adding custom Git hosts to the allowlist that might have changed in the current version of Claude Desktop.
  • Test the plugin marketplace addition process with a publicly accessible Git repository to isolate if the issue is specific to private/self-hosted repositories.

Example

No specific code snippet is applicable in this scenario, as the issue pertains to configuration and settings within the Claude Desktop application.

Notes

The exact cause of the regression is unclear without more detailed logs or version history, but ensuring the allowlist settings are correctly configured is a logical first step in troubleshooting.

Recommendation

Apply workaround: Reconfigure the network/domain allowlist settings to ensure the custom Git host is correctly specified and allowed, as this is the most direct approach to potentially resolving the issue given the provided information.

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