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Outage in Anthropic

Elevated errors on tool use for Claude Code on Opus 4

Resolved Minor
May 22, 2025 - Started 11 months ago - Lasted about 1 hour
Official incident page

Incident Report

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.

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Latest Updates ( sorted recent to last )
RESOLVED 11 months ago - at 05/22/2025 10:32PM

This incident has been resolved.

MONITORING 11 months ago - at 05/22/2025 09:57PM

A fix has been implemented, and the issue should be resolved upon updating Claude Code. We are continuing to monitor closely to ensure there are no further issues.

INVESTIGATING 11 months ago - at 05/22/2025 09:37PM

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.

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