MCP tool errors

Incident Report for Anthropic

Resolved

This incident has been resolved.
Posted Jul 23, 2025 - 17:51 UTC

Update

This issue has been resolved
Posted Jul 23, 2025 - 17:50 UTC

Update

We are continuing to monitor for any further issues.
Posted Jul 23, 2025 - 17:50 UTC

Monitoring

A fix has been implemented and we are monitoring the results.
Posted Jul 23, 2025 - 17:45 UTC

Identified

The issue has been identified and a fix is being implemented.
Posted Jul 23, 2025 - 17:16 UTC

Investigating

We are investigating errors in which MCP tool calls return the error "Error executing code: Cannot convert undefined or null to object".
Posted Jul 23, 2025 - 16:27 UTC
This incident affected: claude.ai.
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