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claude-code - 💡(How to fix) Fix [Bug] Anthropic API errors causing frequent failures and high token usage

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Error Message

[{"error":"Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.11.content.5: thinking or redacted_thinking blocks in the latest assistant message cannot be modified. These blocks must remain as they were in the original response."},"request_id":"req_011CbVL81VGijvfEMPg121Gj"}\n at generate (/$bunfs/root/src/entrypoints/cli.js:11:63519)\n at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-05-28T17:04:57.914Z"},{"error":"Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.11.content.5: thinking or redacted_thinking blocks in the latest assistant message cannot be modified. These blocks must remain as they were in the original response."},"request_id":"req_011CbVL951t9TBbcN8c6j1CZ"}\n at generate (/$bunfs/root/src/entrypoints/cli.js:11:63519)\n at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-05-28T17:05:12.288Z"}]

Code Example

[{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.11.content.5: `thinking` or `redacted_thinking` blocks in the latest assistant message cannot be modified. These blocks must remain as they were in the original response.\"},\"request_id\":\"req_011CbVL81VGijvfEMPg121Gj\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:63519)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-28T17:04:57.914Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.11.content.5: `thinking` or `redacted_thinking` blocks in the latest assistant message cannot be modified. These blocks must remain as they were in the original response.\"},\"request_id\":\"req_011CbVL951t9TBbcN8c6j1CZ\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:63519)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-28T17:05:12.288Z"}]
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Bug Description your program is API erroring out CONSTANTLY and has cost me HOURS OF MY TIME. Fix it or I'm cutting my Max

Environment Info

  • Platform: linux
  • Terminal: gnome-terminal
  • Version: 2.1.153
  • Feedback ID: 74f42f9b-881f-4321-b13b-8379b8bb7783

Errors

[{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.11.content.5: `thinking` or `redacted_thinking` blocks in the latest assistant message cannot be modified. These blocks must remain as they were in the original response.\"},\"request_id\":\"req_011CbVL81VGijvfEMPg121Gj\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:63519)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-28T17:04:57.914Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.11.content.5: `thinking` or `redacted_thinking` blocks in the latest assistant message cannot be modified. These blocks must remain as they were in the original response.\"},\"request_id\":\"req_011CbVL951t9TBbcN8c6j1CZ\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:63519)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-28T17:05:12.288Z"}]

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