Claude Code freezes during API call (“Befuddling” spinner), terminal becomes completely unresponsive
증상
Claude Code occasionally freezes mid-execution during the “thinking” phase (shows spinner text like “Befuddling…” or similar). The terminal becomes completely unresponsive — no keyboard input is accepted, including Ctrl-C. The only recovery is force-killing the process (kill -9), which destroys the entire session context.
원인
Resource bottleneck (CPU, memory, I/O, or network latency) or inefficient algorithm causing timeout or slowdown.
해결법
The only way to recover is kill -9 <pid>, which completely destroys the session and all accumulated context. This is not a workaround — it’s total data loss. For long-running autonomous sessions with extensive conversation history and in-progress multi-step workflows, this means hours of work and context are irretrievably lost. The session cannot be resumed, checkpointed, or recovered.
예상 토큰 절약
이 에러로 삽질 시: 약 5,000~15,000 토큰 소비 이 해결법 참조 시: 약 500 토큰
출처
https://github.com/anthropics/claude-code/issues/24688
Source: https://github.com/anthropics/claude-code/issues/24688
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