Bash tool called with invalid arguments: "expected string, received undefined" for command and description fields #14519

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1. demiryasin95

   added

   bugSomething isn't workingSomething isn't working

   on Feb 21, 2026
2. github-actions commented on Feb 21, 2026

   

   github-actionsBot

   on Feb 21, 2026 – with GitHub Actions

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

   • The bash tool was called with invalid arguments: #10213: Same error — bash tool called with invalid arguments: expected string, received undefined for command and description fields
   • Bash(ls -la) tool description parameter is required but not exposed in tool schema — breaks all bash calls #13146: Same root cause — bash tool description parameter is required but not exposed in tool schema, causing all bash calls to fail with the same Zod validation error
3. github-actions

   assigned

   thdxr

   on Feb 21, 2026
4. github-actions

   added

   coreAnything pertaining to core functionality of the application (opencode server stuff)Anything pertaining to core functionality of the application (opencode server stuff)

   windows

   on Feb 21, 2026
5. nickveenhof

   added a commit that references this issue on Apr 9, 2026

   fix(opencode): recover from truncated tool calls instead of failing s…

   ...

   a266d02
6. github-actions commented on Apr 23, 2026

   

   github-actionsBot

   on Apr 23, 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 completedon Apr 23, 2026