claude-code - 💡(How to fix) Fix Recurring error: "The model's tool call could not be parsed (retry also failed)" interrupts sessions

Summary

During normal sessions, Claude Code intermittently stops mid-task and shows:

The model's tool call could not be parsed (retry also failed).

When this happens the in-progress action is aborted. It has occurred repeatedly across many sessions and does not appear to self-correct, so the turn is effectively lost and I have to resend the request.

Environment

• Claude Code version: 2.1.158
• Model: Claude Opus 4.8 (1M context)
• OS: Windows 11 Pro (build 10.0.26200)
• Node.js: v25.9.0
• Shell: PowerShell

What happens

1. I give Claude a normal coding/file task.
2. Claude begins working and attempts a tool call (e.g. Edit/Bash).
3. Instead of the tool running, the session prints: "The model's tool call could not be parsed (retry also failed)."
4. The action does not complete. The internal retry also fails, so nothing happens and the turn ends.

Frequency & impact

• Frequency: intermittent but recurring across many unrelated sessions.
• Impact: the current step is dropped; sometimes recoverable by retrying, sometimes the turn is wasted.

Reproduction

I have not found a deterministic repro. It seems more likely on longer turns or when a tool call contains large / special-character (non-ASCII, quotes, code) arguments, but I cannot confirm a single trigger.

Expected behavior

When the model's tool call cannot be parsed, Claude Code should either recover gracefully (re-prompt and successfully retry) or surface a clearer, actionable message and let the turn continue instead of silently dropping the action.

Additional context

If it helps debugging, point me to where the raw failed tool-call payload is logged (or how to enable verbose/debug logging) and I can attach an example next time.