claude-code - 💡(How to fix) Fix [BUG] Missing copy_file_claude_to_user while copy_file_user_to_claude is avilable [1 participants]

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anthropics/claude-code#54954Fetched 2026-05-01 05:50:06
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Error Messages/Logs

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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?

I am using Claude App, for Macos Tahoe 26.4.1, version (1.4758.0), t The "copy_file_claude_to_user" tool is missing, but #copy_file_user_to_claude# is listed for Filesystem extension v0.2.2. This broke approximately 2-3 weeks ago. Many Claude.ai chats have previously been using these tools to work with DOCX, RTFD documents. Workflow impact: binary files (.rtfd, .docx) generated in Claude's container cannot be returned to local filesystem write_file not a viable substitute for binary formats

What Should Happen?

file copied from Claude container to local filesystem using MCP Filesystem extension

Error Messages/Logs

Steps to Reproduce

Ask Claude AI to edit a DOCX document in the file system.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

1.4758.0

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

No response

extent analysis

TL;DR

The "copy_file_claude_to_user" tool is missing, causing issues with copying binary files from Claude's container to the local filesystem, and a potential workaround is to investigate alternative methods for file transfer.

Guidance

  • Investigate the Filesystem extension v0.2.2 documentation to see if there are any alternative tools or methods for copying files from Claude's container to the local filesystem.
  • Check if there are any updates or patches available for the Claude App or the Filesystem extension that may address the missing "copy_file_claude_to_user" tool.
  • Consider reaching out to the Claude AI support team or community forums to see if other users have found workarounds for this issue.
  • Review the Anthropic API documentation to see if there are any APIs or endpoints that can be used to transfer files from the container to the local filesystem.

Example

No code example is provided as the issue does not contain sufficient information about the implementation details.

Notes

The issue seems to be a regression, and the last working version is not specified. The "write_file" tool is not a viable substitute for binary formats, so alternative solutions need to be explored.

Recommendation

Apply workaround: The missing "copy_file_claude_to_user" tool needs to be replaced with an alternative method for copying files from Claude's container to the local filesystem, and investigating alternative tools or methods is the best course of action.

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