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claude-code - 💡(How to fix) Fix [Bug] Anthropic API Error: Mismatched tool_use_id in advisor_tool_result block

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Error Message

[{"error":"Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.7.content.0: unexpected tool_use_id found in advisor_tool_result blocks: srvtoolu_017Tii4oWGrhVoMF2h9kXgqx. Each advisor_tool_result block must have a corresponding server_tool_use block before it."},"request_id":"req_011CbWpc9ewyR3vEd2Wf8y2m"}\n at generate (/$bunfs/root/src/entrypoints/cli.js:11:63816)\n at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-05-29T11:59:06.174Z"},{"error":"Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.7.content.0: unexpected tool_use_id found in advisor_tool_result blocks: srvtoolu_017Tii4oWGrhVoMF2h9kXgqx. Each advisor_tool_result block must have a corresponding server_tool_use block before it."},"request_id":"req_011CbWpx1d4WfeKjjjBg9CK4"}\n at generate (/$bunfs/root/src/entrypoints/cli.js:11:63816)\n at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-05-29T12:03:35.618Z"},{"error":"Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.7.content.0: unexpected tool_use_id found in advisor_tool_result blocks: srvtoolu_017Tii4oWGrhVoMF2h9kXgqx. Each advisor_tool_result block must have a corresponding server_tool_use block before it."},"request_id":"req_011CbWqFWFUNiXbwMMPgrX5U"}\n at generate (/$bunfs/root/src/entrypoints/cli.js:11:63816)\n at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-05-29T12:07:32.932Z"}]

Code Example

[{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.7.content.0: unexpected `tool_use_id` found in `advisor_tool_result` blocks: srvtoolu_017Tii4oWGrhVoMF2h9kXgqx. Each `advisor_tool_result` block must have a corresponding `server_tool_use` block before it.\"},\"request_id\":\"req_011CbWpc9ewyR3vEd2Wf8y2m\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:63816)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-29T11:59:06.174Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.7.content.0: unexpected `tool_use_id` found in `advisor_tool_result` blocks: srvtoolu_017Tii4oWGrhVoMF2h9kXgqx. Each `advisor_tool_result` block must have a corresponding `server_tool_use` block before it.\"},\"request_id\":\"req_011CbWpx1d4WfeKjjjBg9CK4\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:63816)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-29T12:03:35.618Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.7.content.0: unexpected `tool_use_id` found in `advisor_tool_result` blocks: srvtoolu_017Tii4oWGrhVoMF2h9kXgqx. Each `advisor_tool_result` block must have a corresponding `server_tool_use` block before it.\"},\"request_id\":\"req_011CbWqFWFUNiXbwMMPgrX5U\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:63816)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-29T12:07:32.932Z"}]
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Bug Description API Error: 400 messages.7.content.0: unexpected tool_use_id found in advisor_tool_result blocks: srvtoolu_017Tii4oWGrhVoMF2h9kXgqx. Each advisor_tool_result block must have a corresponding server_tool_use block before it.

Environment Info

  • Platform: darwin
  • Terminal: xterm-256color
  • Version: 2.1.156
  • Feedback ID: 0e0319f8-b849-4219-a5e9-73673de641ea

Errors

[{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.7.content.0: unexpected `tool_use_id` found in `advisor_tool_result` blocks: srvtoolu_017Tii4oWGrhVoMF2h9kXgqx. Each `advisor_tool_result` block must have a corresponding `server_tool_use` block before it.\"},\"request_id\":\"req_011CbWpc9ewyR3vEd2Wf8y2m\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:63816)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-29T11:59:06.174Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.7.content.0: unexpected `tool_use_id` found in `advisor_tool_result` blocks: srvtoolu_017Tii4oWGrhVoMF2h9kXgqx. Each `advisor_tool_result` block must have a corresponding `server_tool_use` block before it.\"},\"request_id\":\"req_011CbWpx1d4WfeKjjjBg9CK4\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:63816)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-29T12:03:35.618Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.7.content.0: unexpected `tool_use_id` found in `advisor_tool_result` blocks: srvtoolu_017Tii4oWGrhVoMF2h9kXgqx. Each `advisor_tool_result` block must have a corresponding `server_tool_use` block before it.\"},\"request_id\":\"req_011CbWqFWFUNiXbwMMPgrX5U\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:63816)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-29T12:07:32.932Z"}]

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claude-code - 💡(How to fix) Fix [Bug] Anthropic API Error: Mismatched tool_use_id in advisor_tool_result block