File Upload: Full path is being passed as the document name to the AP #36113

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1. github-actions

   assigned

   Hona

   on Jul 9, 2026
2. github-actions commented on Jul 9, 2026

   

   github-actionsBot

   on Jul 9, 2026 – with GitHub Actions

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   This issue might be a duplicate of an existing issue. Please check:

   • Bedrock: file extension included in DocumentBlock name causes validation error #19964: Bedrock DocumentBlock name validation error — same error message about invalid characters in the document file name, previously reported when the file extension was included. This new report indicates the full file path is being passed instead of just the filename, which is a related (possibly the same underlying) bug.

   👍React with 👍1Reacted by Andy Gimblett
3. laflamablanc commented on Jul 9, 2026

   

   laflamablanc

   on Jul 9, 2026

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   The issue is in packages/opencode/src/session/prompt.ts — when a file is attached, the filename field is set to whatever path string was used

   This gets passed through message-v2.ts into the AI SDK's convertToModelMessages(), which then sends it to the Anthropic/Bedrock API as the document name. The API rejects filenames containing / characters.

   The fix would be a one-liner in prompt.ts to use path.basename(filename) instead of the full path when setting the filename field on file parts.
4. joaomj commented on Jul 15, 2026

   

   joaomj

   on Jul 15, 2026

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   i am facing the same issue with bedrock.

   Version   1.18.1 (latest)
   Date      2026-07-15T12:38:27.653Z
   OS        Linux 6.8.0-134-generic (arm64)
   Terminal  xterm-256color
   Session IDses_09a3a6cf0ffegoP0YYJYWqmQti
   Model     amazon-bedrock/us.anthropic.claude-opus-4-8
   

   👍React with 👍1Reacted by Andy Gimblett
5. LorenzaIacobuzioHybrid

   marked File attachment is broken due to file path #38482 as a duplicate of this issue on Jul 23, 2026
6. github-actions commented on Sep 14, 2026

   

   github-actionsBot

   on Sep 14, 2026 – with GitHub Actions

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   To stay organized issues are automatically closed after 60 days of no activity. If the issue is still relevant please open a new one.
7. github-actions

   closed this as not plannedon Sep 14, 2026