BREAKING
Opus 4.8 'court' loop hits Claude Code
How the loop forms
1
Inserts 'court' token
↓
2
Malformed invoke tag
↓
3
Tool call fails
↓
4
Infinite loop
Tool calls fail, text is fine
Tool calls
Broken
●
Bad invoke XML
●
Endless loops
●
CLI, app, WSL
Text replies
Normal
●
Render fine
●
No corruption
0
M
Context tokens
0
$
Input per M
0
$
Output per M
Workarounds while fix awaited
Anthropic fix still pending
AI NEWS BLITZ
Anthropic's Opus 4.8 is breaking tool calls in Claude Code, sending agents into endless loops.