API recovered separately; authentication remained broken longest. Clear separation of auth and compute infrastructure.
Elevated errors on Claude.ai, API, Claude Code — incident resolved
Original: Elevated errors on Claude.ai, API, Claude Code
Importance: 本番環境で複数のClaude関連サービスが同時に利用不可になり、既存ユーザーに即座に影響。
Summary
On April 15, Anthropic experienced a major service outage affecting Claude.ai, Claude API, and Claude Code. The incident began at 14:53 UTC with elevated errors. The API recovered fully by 16:01 UTC, while Claude.ai login and Claude Code login-via-web experienced persistent issues. All services were fully resolved by 17:42 UTC. Login functionality was the last system to stabilize, suggesting authentication infrastructure was the root cause.
Key Points
- Incident detected at 14:53 UTC; multiple services affected simultaneously (API, Claude.ai, Claude Code)
- API recovered at 16:01 UTC; already-logged-in users retained access
- Login functionality remained broken longest, suggesting authentication system as root cause
- All services fully resolved by 17:42 UTC
View developer notes (APIs, breaking changes, migration)
The API fully recovered at 16:01 UTC independently, while already-logged-in Claude Code users retained functionality. However, new login attempts via Claude.ai and Claude Code web interface remained broken until 16:29 UTC, suggesting a separate authentication infrastructure issue. This indicates API and auth layers operate on distinct systems. The staggered recovery pattern demonstrates infrastructure decoupling and the criticality of monitoring authentication separately from compute endpoints.
Source: https://status.claude.com/incidents/f00h6l76tsjs
Outlet: Anthropic Status
This article is an AI-generated summary (OpenAI GPT-4o-mini) of publicly available information from Anthropic, OpenAI, Google, Meta, Mistral, DeepSeek, Sakana, and other vendors. The original source URL is always provided in accordance with fair-use citation requirements. Summaries are AI-generated and may contain mistranslations or misinterpretations. Always verify details with the original source.