Cursor incident: Investigating service degradation

Affected components

• Automations
• CLI
• Cloud Agents
• Grok Bot
• IDE
• Origin
• Review Agents

1. resolvedSep 15, 2026, 22:00 UTC

   This incident has been resolved at 6pm Eastern.

2. monitoringSep 15, 2026, 21:41 UTC

   A fix has been implemented and we are monitoring for service restoration. Only Grok 4.6 (non-fast) is affected in Cursor.

3. monitoringSep 15, 2026, 21:38 UTC

   A fix has been implemented and we are monitoring for service restoration.

4. investigatingSep 15, 2026, 21:26 UTC

   We are investigating a service degradation. Affected agent surfaces: Composer and xAI.

What APIStatus.watch saw

Our 5-minute checks didn't record a change in Cursor's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.

Other services with incidents at the same time

Overlapping incidents aren't necessarily related.

• MongoDB Atlas: Impaired Cluster operations in AWS me-central-1 and AWS me-south-1Major · Sep 3, 2026, 16:44 UTC
• Elasticsearch: Elastic Agent enrollment/check-in failures on 9.5.3 (and 9.4.6) with Fleet remote Elasticsearch outputMajor · Sep 9, 2026, 20:44 UTC
• Twilio: Voice Call Failures from a Subset of Twilio Phone Numbers to Hong KongMinor · Sep 12, 2026, 00:16 UTC
• Twilio: Missing Data in Voice Insights / Console Subaccount RollupMinor · Sep 15, 2026, 03:51 UTC
• Telnyx: Outbound Messaging LatencyMinor · Sep 15, 2026, 15:27 UTC
• Twilio: SMS Delivery Failures from Twilio Alphanumeric Sender IDs and Long Codes to Smart Axiata/Hello CambodiaMinor · Sep 15, 2026, 17:08 UTC
• Twilio: SMS Delivery Delays from a Subset of Twilio Toll-Free Numbers to Videotron CanadaMinor · Sep 15, 2026, 17:56 UTC
• ClickHouse Cloud: ClickPipes failing on Kinesis in AWS us-east-1Minor · Sep 15, 2026, 18:57 UTC
• Telnyx: SMS Delivery — Encoding Issues on Outbound Messages to T-MobileMinor · Sep 15, 2026, 21:57 UTC

How often does Cursor have incidents?

Cursor reported 88 incidents in the last 90 days, 23 of them major or critical. A typical incident lasted 1h 12m. See Cursor's uptime and incident history