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Claude responded: Claude for Box MCP Integration — File Version Upload FailureClaude for Box MCP Integration — File Version Upload Failure

  • June 10, 2026
  • 1 reply
  • 13 views

I am having a challenge with the Claude MCP Integration. Has anyone experienced this and has a solution?

 

Claude for Box MCP Integration — File Version Upload Failure

Integration: Claude for Box (Official MCP integration, listed in Box App Center) 

Issue: The Claude MCP integration is unable to upload new versions of existing files despite being fully authorized. The integration returns a permissions error when attempting to call the Box file version upload API endpoint.

Authorization status: The integration shows "Integration Added" in Box with the following granted scopes:

  • Read all files and folders stored in Box
  • Read and write all files and folders stored in Box
  • Manage Docgen Requests
  • Manage AI Requests

Expected behavior: With read/write scope granted, the integration should be able to upload new versions of existing files owned by the authorized user.

Question for Box support: Does the Claude for Box MCP app (published by Box in the App Center) have the item_upload scope enabled in its app registration? File version uploads require this specific scope in addition to root_readwrite. If the app was registered without item_upload, authorized users will be blocked from version uploads regardless of what permissions they grant during OAuth.

Workaround in use: Manual upload via Box web UI until resolved.

1 reply

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  • New Member
  • June 11, 2026

Hello -- Do you have Box Drive installed? Claude successfully uploads files to Box agentically for me and the only difference I could pinpoint is Box Drive. 

Caveat: I ran Cowork to upload PDFs and had this error “The Box MCP only supports text file uploads — no binary PDF upload route is available.” It did successfully convert the PDFs to txt and upload them. 

I have not attempted other file types. 

Hope this helps!