r/ClaudeAI: Claude Opus 4.8 'Tool Call Could Not Be Parsed (Retry Also Failed)' Error Blocks Agentic Workflows With No Self-Recovery Path

Multiple Claude Code users report an intermittent 'The model's tool call could not be parsed (retry also failed)' error when Opus 4.8 attempts tool calls, with the failure mode blocking entire agentic workflows — the model cannot self-recover from the parsing failure. Community members confirm the issue spans multiple use cases and appears distinct from the previously documented May 29 outage and the June 2 elevated-error incidents. The thread has grown rapidly as developers document the failure across different projects and tool configurations.