Base Sepolia - Degraded Performance
Incident Lifecycle
Affected Components
Sepolia - JSON-RPC API
Sepolia - WebSocket API
Sepolia —Webhooks
Sepolia — Streams
Incident Timeline
Identified
Our team is actively listening to updates from the Base team regarding Base Sepolia degradation. A fix has been identified and is being implemented by the Base team for the Base node client. We will update this page as we receive further updates.
Aug 21, 2026 at 5:46 PM UTC
Investigating
The Quicknode team is investigating the degraded performance of Base Sepolia - we will update this page as we acquire new information.
Aug 19, 2026 at 9:52 AM UTC
Identified
Customers may experience higher error rates, including 503 responses. We are in active communication with the Foundation and waiting for a new release to mitigate this. Further updates will be provided as the situation develops.
Aug 19, 2026 at 6:32 AM UTC
Investigating
The Quicknode team is investigating degraded performance of Base Sepolia. Users may observe 503 responses from their requests. We will follow up once we have more updates.
Aug 18, 2026 at 6:08 PM UTC
Monitoring
A fix has been implemented and we are monitoring the results.
Aug 18, 2026 at 1:45 AM UTC
Investigating
The Quicknode team is investigating degraded performance of Base Sepolia in FRA region. We will follow up once we have more updates.
Aug 18, 2026 at 1:42 AM UTC
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