Elevated errors on tool use for Claude Code on Opus 4

May 22, 14:37 PDT
Investigating - We have identified an issue related to tool usage in Claude Code on Claude Opus 4, and our engineers are working to resolve this issue. We will provide additional updates as soon as possible.

via Anthropic Status - Incident History

Anthropic

Elevated errors on tool use for Claude Code on Opus 4

Anthropic's Status Page - Elevated errors on tool use for Claude Code on Opus 4.