Increased latency on REST and GraphQL APIs

What to do

• Check whether you use Buildkite REST API, Remote MCP Server. Check your stack

  Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.

• Confirm your retries, queues and scheduled jobs caught up after the 58m it lasted.

  Anything that failed between 2026-06-11 23:18 UTC and 2026-06-12 00:16 UTC may need a replay.

• Subscribe to Buildkite's feed to hear about the next one first. RSS feed

  https://down.guide/feed?provider=buildkite works in Slack (/feed subscribe), Discord feed bots and any RSS reader.

Updates from Buildkite 4

1. investigatingJun 11, 2026, 11:18 PM UTC

   We're observing increased latency for all our customers. We're currently investigating and will provide status updates as they become available.

   provider

2. monitoringJun 11, 2026, 11:49 PM UTC

   We've isolated the issue to elevated load on our REST API service and are working to mitigate. The agent and stacks API isn’t affected.

   provider

3. monitoringJun 11, 2026, 11:51 PM UTC

   We've isolated the issue to elevated load on our REST API service and have mitigated the issue. The agent and stacks API isn’t affected.

   provider

4. resolvedJun 12, 2026, 12:16 AM UTC

   The mitigation applied before the last update had the intended effect, and we have seen recovery in REST API latency.

   provider

Corrections

None so far.

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