Anthropic logged an incident with impact "major" naming the API surface, Claude API (api.anthropic.com), alongside Claude Code, Claude Cowork and claude.ai, titled "Elevated errors for Claude Sonnet 5.5"; status is "resolved". A major incident on the API surface is a capacity-strain signal for the analyst, read as what the vendor chose to post rather than an SLA measure.
Every field of each cited change, before and after.
| Field | Before | After |
|---|---|---|
| components | ∅ | ["Claude API (api.anthropic.com)","Claude Code","Claude Cowork","claude.ai"] |
| impact | ∅ | major |
| incident_id | ∅ | 0q89dylg9vjk |
| incident_url | ∅ | https://status.claude.com/incidents/0q89dylg9vjk |
| provider | ∅ | anthropic |
| resolved_at | ∅ | 2026-10-27T09:56:46.355Z |
| started_at | ∅ | 2026-10-27T09:14:35.040Z |
| status | ∅ | resolved |
| title | ∅ | Elevated errors for Claude Sonnet 5.5 |
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