[Bug] HTTP 500 Error Response from Anthropic API

Bug Description
error 500 after sending request

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 2.1.109
• Feedback ID: 0aae32e0-e6da-4cfb-b9da-7df2f752dd84

Errors

[{"error":"Error: ensureToolResultPairing: repaired missing tool_result blocks (43 -> 43 messages). Message structure: [0] user; [1] assistant(id=msg_01MnxWCEJACEoH21ZhstnufQ, tool_uses=[toolu_01RMLtdxug5VsobMwJgBy7oW]); [2] user(tool_results=[toolu_01RMLtdxug5VsobMwJgBy7oW]); [3] assistant(id=msg_01CMpufwbuAdhZXStJ6o7o5G, tool_uses=[toolu_019sZdCPBSm6fhJrtodgrjGB]); [4] user(tool_results=[toolu_019sZdCPBSm6fhJrtodgrjGB]); [5] assistant(id=msg_016a324LEXQmZYY6PLjiNznh, tool_uses=[toolu_01VJdb1sbvWWfTyckDjwutHV]); [6] user(tool_results=[toolu_01VJdb1sbvWWfTyckDjwutHV]); [7] assistant(id=msg_01UCfKWdjx6SQiDS6yhjvmn1, tool_uses=[toolu_016KGTm9YA6m2b4Gsg9MWkEH]); [8] user(tool_results=[toolu_016KGTm9YA6m2b4Gsg9MWkEH]); [9] assistant(id=msg_019DszKZnauuJWFt4BGbh6dt, tool_uses=[toolu_012A8PBvg7yUPdexbx1vr6KH]); [10] user(tool_results=[toolu_012A8PBvg7yUPdexbx1vr6KH]); [11] assistant(id=msg_01KtV1JVyfU51UeXaVM9DHK3, tool_uses=[toolu_01TbQJoNYgRffKoi1KFNinhS]); [12] user(tool_results=[toolu_01TbQJoNYgRffKoi1KFNinhS]); [13] assistant(id=msg_01NiFAicDumRhAo82nJmVYEq, tool_uses=[], server_tool_uses=[srvtoolu_01U7vyx4VrkRuWgTuCNxwYnD]); [14] user; [15] assistant(id=msg_01RHPQkFxErEAWVLjsJxGNiG, tool_uses=[toolu_01T8ccF2kSxy6hEkSK9zbxGa], server_tool_uses=[srvtoolu_01GfsQKDJfBDx9VhwHtJ3x66]); [16] user(tool_results=[toolu_01T8ccF2kSxy6hEkSK9zbxGa]); [17] assistant(id=msg_01CmA73UyzkyZqctNhBUXxV1, tool_uses=[toolu_01YbYNnC4DQ8oBY5U3BCWojM]); [18] user(tool_results=[toolu_01YbYNnC4DQ8oBY5U3BCWojM]); [19] assistant(id=msg_018pub6ofp67N8vRraNCnQaX, tool_uses=[toolu_011ZAuPV8hDyQW8E1xmC45ME]); [20] user(tool_results=[toolu_011ZAuPV8hDyQW8E1xmC45ME]); [21] assistant(id=msg_015wxQ4htyMCKUHidaEX5Swd, tool_uses=[toolu_014Rqzu4HeKvZMB6gDRTJvJZ]); [22] user(tool_results=[toolu_014Rqzu4HeKvZMB6gDRTJvJZ]); [23] assistant(id=msg_01DmDgKVGG3tJEHLGgJGQYit, tool_uses=[toolu_01PSDTZzrcMpB6BtFgaWSD9Y]); [24] user(tool_results=[toolu_01PSDTZzrcMpB6BtFgaWSD9Y]); [25] assistant(id=msg_01Tkbp6VTvaYS6Pa42Pdx9Y4, tool_uses=[toolu_01QsCNv43uNS2HAUyzFkrUgN]); [26] user(tool_results=[toolu_01QsCNv43uNS2HAUyzFkrUgN]); [27] assistant(id=msg_01Np5FBeRUg2afTVKNjaGz9z, tool_uses=[toolu_01YUPEq3iUzrvgCMmfrxBcyg]); [28] user(tool_results=[toolu_01YUPEq3iUzrvgCMmfrxBcyg]); [29] assistant(id=msg_01VJuASLmLvNredRWmGqhg93, tool_uses=[toolu_01KxXDvAsQgWBZ1GPskjZLoX]); [30] user(tool_results=[toolu_01KxXDvAsQgWBZ1GPskjZLoX]); [31] assistant(id=msg_01Y89m4qBToP7ETTHCGAU9uv, tool_uses=[toolu_01WpN1WZ9n8LFyLTvgfkWbB9]); [32] user(tool_results=[toolu_01WpN1WZ9n8LFyLTvgfkWbB9]); [33] assistant(id=msg_01T2AW9uNLfz9XAuYKvTCZjd, tool_uses=[toolu_01GqaHkBNL3BTrHD74jrrJ2a]); [34] user(tool_results=[toolu_01GqaHkBNL3BTrHD74jrrJ2a]); [35] assistant(id=msg_01TYr6Aon6hg3FTrC3NRTEk1, tool_uses=[]); [36] user; [37] assistant(id=msg_01FRinaxjdFFuTW9gmcUSxUH, tool_uses=[toolu_01Sc6yiJse3u1hFZ6B3z6o55]); [38] user(tool_results=[toolu_01Sc6yiJse3u1hFZ6B3z6o55]); [39] assistant(id=msg_013bdgQgRZ8KM26ycNQjLbLm, tool_uses=[toolu_01AbyVv916qxFDNoZKC59W61]); [40] user(tool_results=[toolu_01AbyVv916qxFDNoZKC59W61]); [41] assistant(id=msg_01QfJttwS6bizKYwVqq8VxBx, tool_uses=[toolu_01KEwYGapShdC9DE2ypt9QmS]); [42] user(tool_results=[toolu_01KEwYGapShdC9DE2ypt9QmS])\n    at Aj7 (/$bunfs/root/src/entrypoints/cli.js:5080:9954)\n    at Pp7 (/$bunfs/root/src/entrypoints/cli.js:8032:12201)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-15T14:16:00.504Z"},{"error":"Error: ensureToolResultPairing: repaired missing tool_result blocks (45 -> 45 messages). Message structure: [0] user; [1] assistant(id=msg_01MnxWCEJACEoH21ZhstnufQ, tool_uses=[toolu_01RMLtdxug5VsobMwJgBy7oW]); [2] user(tool_results=[toolu_01RMLtdxug5VsobMwJgBy7oW]); [3] assistant(id=msg_01CMpufwbuAdhZXStJ6o7o5G, tool_uses=[toolu_019sZdCPBSm6fhJrtodgrjGB]); [4] user(tool_results=[toolu_019sZdCPBSm6fhJrtodgrjGB]); [5] assistant(id=msg_016a324LEXQmZYY6PLjiNznh, tool_uses=[toolu_01VJdb1sbvWWfTyckDjwutHV]); [6] user(tool_results=[toolu_01VJdb1sbvWWfTyckDjwutHV]); [7] assistant(id=msg_01UCfKWdjx6SQiDS6yhjvmn1, tool_uses=[toolu_016KGTm9YA6m2b4Gsg9MWkEH]); [8] user(tool_results=[toolu_016KGTm9YA6m2b4Gsg9MWkEH]); [9] assistant(id=msg_019DszKZnauuJWFt4BGbh6dt, tool_uses=[toolu_012A8PBvg7yUPdexbx1vr6KH]); [10] user(tool_results=[toolu_012A8PBvg7yUPdexbx1vr6KH]); [11] assistant(id=msg_01KtV1JVyfU51UeXaVM9DHK3, tool_uses=[toolu_01TbQJoNYgRffKoi1KFNinhS]); [12] user(tool_results=[toolu_01TbQJoNYgRffKoi1KFNinhS]); [13] assistant(id=msg_01NiFAicDumRhAo82nJmVYEq, tool_uses=[], server_tool_uses=[srvtoolu_01U7vyx4VrkRuWgTuCNxwYnD]); [14] user; [15] assistant(id=msg_01RHPQkFxErEAWVLjsJxGNiG, tool_uses=[toolu_01T8ccF2kSxy6hEkSK9zbxGa], server_tool_uses=[srvtoolu_01GfsQKDJfBDx9VhwHtJ3x66]); [16] user(tool_results=[toolu_01T8ccF2kSxy6hEkSK9zbxGa]); [17] assistant(id=msg_01CmA73UyzkyZqctNhBUXxV1, tool_uses=[toolu_01YbYNnC4DQ8oBY5U3BCWojM]); [18] user(tool_results=[toolu_01YbYNnC4DQ8oBY5U3BCWojM]); [19] assistant(id=msg_018pub6ofp67N8vRraNCnQaX, tool_uses=[toolu_011ZAuPV8hDyQW8E1xmC45ME]); [20] user(tool_results=[toolu_011ZAuPV8hDyQW8E1xmC45ME]); [21] assistant(id=msg_015wxQ4htyMCKUHidaEX5Swd, tool_uses=[toolu_014Rqzu4HeKvZMB6gDRTJvJZ]); [22] user(tool_results=[toolu_014Rqzu4HeKvZMB6gDRTJvJZ]);…

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