[Bug] Anthropic API Error: Missing corresponding server_tool_use block for advisor_tool_result
Status Open
Reported on v2.1.263
Maintainer reply None cached
Activity 0 comments · opened Sep 7, 2026
Bug Description
⏺ Switched to Opus 5 because Opus 5 (1M context) returned an error that could not be retried (400
{"type":"error","error":{"type":"invalid_request_error","message":"messages.9.content.0: unexpected tool_use_id found in advisor_tool_result blocks:
srvtoolu_01UxG3e3F3MNKzeHtcyc5vV3. Each advisor_tool_result block must have a corresponding server_tool_use block before it."},"request_id"…)
⏺ API Error: 400 messages.9.content.0: unexpected tool_use_id found in advisor_tool_result blocks: srvtoolu_01UxG3e3F3MNKzeHtcyc5vV3. Each advisor_tool_result block must
have a corresponding server_tool_use block before it.
Environment Info
- Platform: darwin
- Terminal: iTerm.app
- Version: 2.1.263
- Feedback ID: 7d2ce593-1194-4622-a41c-4ec2ebfd9304
Errors
[{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.9.content.0: unexpected `tool_use_id` found in `advisor_tool_result` blocks: srvtoolu_01UxG3e3F3MNKzeHtcyc5vV3. Each `advisor_tool_result` block must have a corresponding `server_tool_use` block before it.\"},\"request_id\":\"req_011CeohYYHXheDvjfrWHXUUX\"}\n at generate (/$bunfs/root/chunk-h4f48kbj.js:11:14239)\n at makeRequest (/$bunfs/root/chunk-h4f48kbj.js:51:8033)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-09-07T07:39:58.558Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.9.content.0: unexpected `tool_use_id` found in `advisor_tool_result` blocks: srvtoolu_01UxG3e3F3MNKzeHtcyc5vV3. Each `advisor_tool_result` block must have a corresponding `server_tool_use` block before it.\"},\"request_id\":\"req_011CeohZj4hqMfLoVQVMEwKc\"}\n at generate (/$bunfs/root/chunk-h4f48kbj.js:11:14239)\n at makeRequest (/$bunfs/root/chunk-h4f48kbj.js:51:8033)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-09-07T07:40:14.621Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.9.content.0: unexpected `tool_use_id` found in `advisor_tool_result` blocks: srvtoolu_01UxG3e3F3MNKzeHtcyc5vV3. Each `advisor_tool_result` block must have a corresponding `server_tool_use` block before it.\"},\"request_id\":\"req_011CeohbBCr51b417U9utLqW\"}\n at generate (/$bunfs/root/chunk-h4f48kbj.js:11:14239)\n at makeRequest (/$bunfs/root/chunk-h4f48kbj.js:51:8033)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-09-07T07:40:34.316Z"}]