claude-code - 💡(How to fix) Fix [BUG] aAPI Error API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages: text content blocks must be non-empty"},"request_id":"req_011CadzdJN5EMs3LtT7nCK6X"} [1 comments, 2 participants]

API Error API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.716.content.1.text: cache_control cannot be set for empty text blocks"},"request_id":"req_011CadzcQ9Z32r4LqUME6L7Z"}

TL;DR

Adding a character to the chat before pasting a screenshot may prevent the session from crashing in Claude Code.

Guidance

• Verify that the issue is specific to pasting screenshots without any accompanying text by testing with different types of content.
• Check if the error message messages.716.content.1.text: cache_control cannot be set for empty text blocks provides any clues about the required format for text blocks.
• Test if adding a character before pasting the screenshot consistently resolves the issue.
• Consider reporting this as a regression bug since it worked in a previous version.

Example

No code snippet is provided as the issue seems related to the interaction with the Claude Code interface rather than a code-based solution.

Notes

The provided error message suggests that there might be a specific requirement for text blocks that is not being met when only a screenshot is pasted. The fact that adding a character prevents the crash implies that the issue is related to empty text blocks.

Recommendation

Apply workaround: Add a character to the chat before pasting a screenshot, as this has been reported to prevent the session from crashing. This is chosen because it provides an immediate, albeit temporary, solution to the problem while a more permanent fix is developed.