Tool Result Block Mismatch in API Request Payload

Resolved 💬 1 comment Opened Jul 12, 2025 by nebooz Closed Jul 12, 2025

Bug Description
No matter what I do now, I'm stuck with this: API Error: 400
{"type":"error","error":{"type":"invalid_request_error","message":"messages.0.content.5:
unexpected tool_use_id found in tool_result blocks: toolu_01TxmwrUZoEsafkdqNgGkWGo. Each
tool_result block must have a corresponding tool_use block in the previous message."}}

Environment Info

  • Platform: darwin
  • Terminal: vscode
  • Version: 1.0.51
  • Feedback ID: a3930b94-f360-4239-9611-50605342b3e0

Errors

[{"error":"Error: Command failed: security find-generic-password -a $USER -w -s \"Claude Code\"\nsecurity: SecKeychainSearchCopyNext: The specified item could not be found in the keychain.\n\n    at genericNodeError (node:internal/errors:983:15)\n    at wrappedFn (node:internal/errors:537:14)\n    at checkExecSyncError (node:child_process:883:11)\n    at execSync (node:child_process:955:15)\n    at eD (file:///Users/nebooz/.nvm/versions/node/v22.17.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:712:4489)\n    at file:///Users/nebooz/.nvm/versions/node/v22.17.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:624:13989\n    at Q (file:///Users/nebooz/.nvm/versions/node/v22.17.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:526:14406)\n    at QF (file:///Users/nebooz/.nvm/versions/node/v22.17.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:624:13129)\n    at cC (file:///Users/nebooz/.nvm/versions/node/v22.17.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:624:11995)\n    at qB (file:///Users/nebooz/.nvm/versions/node/v22.17.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:624:16609)","timestamp":"2025-07-12T05:55:52.857Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.0.content.5: unexpected `tool_use_id` found in `tool_result` blocks: toolu_01TxmwrUZoEsafkdqNgGkWGo. Each `tool_result` block must have a corresponding `tool_use` block in the previous message.\"}}\n    at Z6.generate (file:///Users/nebooz/.nvm/versions/node/v22.17.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1315:12578)\n    at iq.makeStatusError (file:///Users/nebooz/.nvm/versions/node/v22.17.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1332:2100)\n    at iq.makeRequest (file:///Users/nebooz/.nvm/versions/node/v22.17.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1332:5311)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async tA1.showErrors (file:///Users/nebooz/.nvm/versions/node/v22.17.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1706:23178)\n    at async tA1 (file:///Users/nebooz/.nvm/versions/node/v22.17.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1706:12720)\n    at async oO2 (file:///Users/nebooz/.nvm/versions/node/v22.17.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1706:23029)\n    at async file:///Users/nebooz/.nvm/versions/node/v22.17.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1706:18138\n    at async c0A (file:///Users/nebooz/.nvm/versions/node/v22.17.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1706:5121)\n    at async Tc (file:///Users/nebooz/.nvm/versions/node/v22.17.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1706:18108)","timestamp":"2025-07-12T05:56:02.161Z"}]

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