LangChain incident

LangSmith UI: ongoing incident — trace visualization unavailable

Minor Resolved View vendor source →

LangChain experienced a minor incident on April 30, 2026 affecting LangSmith Application, lasting —. The incident has been resolved; the full update timeline is below.

Started
Apr 30, 2026, 06:30 PM UTC
Resolved
Apr 30, 2026, 06:30 PM UTC
Duration
—
Detected by Pingoru
Apr 30, 2026, 06:30 PM UTC

Affected components

LangSmith Application

Update timeline

  1. investigating Apr 30, 2026, 02:59 PM UTC

    Status: Investigating We're currently investigating an incident affecting trace visualization in the LangSmith UI. Traces may not render correctly or may fail to load. Affected components LangSmith Application (Partial outage)

  2. identified Apr 30, 2026, 03:33 PM UTC

    Status: Identified We have identified the root cause and are working on a fix. Affected components LangSmith Application (Partial outage)

  3. monitoring Apr 30, 2026, 04:19 PM UTC

    Status: Monitoring We have deployed a fix and are continuing to monitor the situation closely. Trace ingestion was not impacted. We apologize for the inconvenience. Affected components LangSmith Application (Partial outage)

  4. resolved Apr 30, 2026, 06:30 PM UTC

    Status: Resolved The fix has been properly released. Thank you for your patience and sorry for the inconvenience. Affected components LangSmith Application (Operational)