[Bug] Anthropic API Error: Invalid Content Block Type After MCP Tool Cancellation

Bug Description
got 422 error after cancel mcp tool ⎿ API Error: 422 {"detail":[{"type":"string_type","loc":["body","messages",54,"content","s
tr"],"msg":"Input should be a valid string","input":[{"tool_use_id":"call_wmpl7qfnw8","t
ype":"tool_result"},{"type":"text","text":"<system-reminder>\nThe TodoWrite tool hasn't
been used recently. If you're working on tasks that would benefit from tracking
progress, consider using the TodoWrite tool to track progress. Also consider cleaning up
the todo list if has become stale and no longer matches what you are working on. Only
use it if it's relevant to the current work. This is just a gentle reminder - ignore if
not applicable.\n\n</system-reminder>"},{"type":"text","text":"[Request interrupted by
user for tool use]"},{"type":"text","text":"xxxx
","cache_control":{"type":"ephemeral"}}]},{"type":"literal_error","loc":["body","message
s",54,"content","list[union[ClaudeContentBlockText,ClaudeContentBlockThinking,ClaudeCont
entBlockImage,ClaudeContentBlockToolUse,ClaudeContentBlockToolResult]]",0,"ClaudeContent
BlockText","type"],"msg":"Input should be 'text'","input":"tool_result","ctx":{"expected
":"'text'"}},{"type":"missing","loc":["body","messages",54,"content","list[union[ClaudeC
ontentBlockText,ClaudeContentBlockThinking,ClaudeContentBlockImage,ClaudeContentBlockToo
lUse,ClaudeContentBlockToolResult]]",0,"ClaudeContentBlockText","text"],"msg":"Field
required","input":{"tool_use_id":"call_wmpl7qfnw8","type":"tool_result"}},{"type":"liter
al_error","loc":["body","messages",54,"content","list[union[ClaudeContentBlockText,Claud
eContentBlockThinking,ClaudeContentBlockImage,ClaudeContentBlockToolUse,ClaudeContentBlo
ckToolResult]]",0,"ClaudeContentBlockThinking","type"],"msg":"Input should be
'thinking'","input":"tool_result","ctx":{"expected":"'thinking'"}},{"type":"missing","lo
c":["body","messages",54,"content","list[union[ClaudeContentBlockText,ClaudeContentBlock
Thinking,ClaudeContentBlockImage,ClaudeContentBlockToolUse,ClaudeContentBlockToolResult]
]",0,"ClaudeContentBlockThinking","thinking"],"msg":"Field
required","input":{"tool_use_id":"call_wmpl7qfnw8","type":"tool_result"}},{"type":"missi
ng","loc":["body","messages",54,"content","list[union[ClaudeContentBlockText,ClaudeConte
ntBlockThinking,ClaudeContentBlockImage,ClaudeContentBlockToolUse,ClaudeContentBlockTool
Result]]",0,"ClaudeContentBlockThinking","signature"],"msg":"Field
required","input":{"tool_use_id":"call_wmpl7qfnw8","type":"tool_result"}},{"type":"liter
al_error","loc":["body","messages",54,"content","list[union[ClaudeContentBlockText,Claud
eContentBlockThinking,ClaudeContentBlockImage,ClaudeContentBlockToolUse,ClaudeContentBlo
ckToolResult]]",0,"ClaudeContentBlockImage","type"],"msg":"Input should be
'image'","input":"tool_result","ctx":{"expected":"'image'"}},{"type":"missing","loc":["b
ody","messages",54,"content","list[union[ClaudeContentBlockText,ClaudeContentBlockThinki
ng,ClaudeContentBlockImage,ClaudeContentBlockToolUse,ClaudeContentBlockToolResult]]",0,"
ClaudeContentBlockImage","source"],"msg":"Field
required","input":{"tool_use_id":"call_wmpl7qfnw8","type":"tool_result"}},{"type":"liter
al_error","loc":["body","messages",54,"content","list[union[ClaudeContentBlockText,Claud
eContentBlockThinking,ClaudeContentBlockImage,ClaudeContentBlockToolUse,ClaudeContentBlo
ckToolResult]]",0,"ClaudeContentBlockToolUse","type"],"msg":"Input should be
'tool_use'","input":"tool_result","ctx":{"expected":"'tool_use'"}},{"type":"missing","lo
c":["body","messages",54,"content","list[union[ClaudeContentBlockText,ClaudeContentBlock
Thinking,ClaudeContentBlockImage,ClaudeContentBlockToolUse,ClaudeContentBlockToolResult]
]",0,"ClaudeContentBlockToolUse","id"],"msg":"Field
required","input":{"tool_use_id":"call_wmpl7qfnw8","type":"tool_result"}},{"type":"missi
ng","loc":["body","messages",54,"content","list[union[ClaudeContentBlockText,ClaudeConte
ntBlockThinking,ClaudeContentBlockImage,ClaudeContentBlockToolUse,ClaudeContentBlockTool
Result]]",0,"ClaudeContentBlockToolUse","name"],"msg":"Field
required","input":{"tool_use_id":"call_wmpl7qfnw8","type":"tool_result"}},{"type":"missi
ng","loc":["body","messages",54,"content","list[union[ClaudeContentBlockText,ClaudeConte
ntBlockThinking,ClaudeContentBlockImage,ClaudeContentBlockToolUse,ClaudeContentBlockTool
Result]]",0,"ClaudeContentBlockToolUse","input"],"msg":"Field
required","input":{"tool_use_id":"call_wmpl7qfnw8","type":"tool_result"}},{"type":"missi
ng","loc":["body","messages",54,"content","list[union[ClaudeContentBlockText,ClaudeConte
ntBlockThinking,ClaudeContentBlockImage,ClaudeContentBlockToolUse,ClaudeContentBlockTool
Result]]",0,"ClaudeContentBlockToolResult","content"],"msg":"Field
required","input":{"tool_use_id":"call_wmpl7qfnw8","type":"tool_result"}}]}

Environment Info

• Platform: darwin
• Terminal: tmux
• Version: 1.0.115
• Feedback ID:

Errors

Note: Error logs were truncated.