Is Claude AI down? API 529 overloaded errors hit coding tasks and Claude Code

Claude AI appears to be experiencing issues, with users reporting widespread API 529 “Overloaded” errors that are disrupting coding tasks and affecting Claude Code.

Downdetector reports
According to Downdetector, outage reports began coming in around 8:30 p.m. EDT on Sunday, with users reporting problems with both Claude Code and Claude’s chat service. By 8:45 p.m., Downdetector had received more than 4,000 outage reports.