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Buildkite Outage History

Daily provider-status observations and published incident history for Buildkite.

Operational

Buildkite is operational. Verified . Official provider source.

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77.2% of 57 verified observed days had no reported provider issue

90-Day Trend

Jul 23Oct 20

Dashed calendar markers below identify legacy observations whose source-at-observation was not recorded.

Monthly Status Summary

Month Issue-free days Days Tracked Days with issues
September 2026 73.3% 30 8

This percentage summarizes normalized provider-status observations by calendar day. It is not duration-based, component-weighted, or contractual uptime. See the methodology and limitations.

Recorded Daily Status (Last 91 Days)

Jul 22 Today
Legacy observation Operational Degraded Partial Outage Major Outage Maintenance No Data

Incident History

August 2026
Test Engine ingestion delayed, catching up
minor Observed active window 48m

View incident details and source

Started:

Ingestion
monitoring
Catch-up processing continues, most of the backlog is processed, ingestion latency is decreasing.
monitoring
Internal processing of uploaded test execution data has been delayed, and is currently catching up. No data has been dropped, and all data should be processed over the next hour.
Issues identified with buildkite-agent registration
minor Observed active window 1h 32m

View incident details and source

Started:

Agent API
monitoring
Recovery is underway; we'll keep monitoring until recovery is complete.
investigating
We have rolled out a few changes to fix the underlying issues and are seeing signs of recovery. We'll keep monitoring until all systems are fully recovered and communicate once we are confident everything is stable again.
investigating
We identified issues affecting certain customers when the buildkite-agent attempts to register with Buildkite. When agents are not able to register, builds may start to back up. We've identified a potential root case and are attempting changes to fix it.
investigating
We're seeing increased latency and error rates for a subset of our customers. We're currently investigating and will provide status updates as they become available.
Buildkite service disruption
major Observed active window 1h 19m

View incident details and source

Started:

REST API Web GitHub Commit Status Notifications Email Notifications Agent API Remote MCP Server Slack Notifications Job Queue Webhook Notifications
monitoring
Systems have recovered and we are seeing new builds created. For a period of about 20min new builds could not be created due to a failure of our internal DNS services. No build requests were lost during this time and we are continuing to process the backlog
investigating
We have identified a fix and applied mitigations, and we are seeing signs of recovery.
investigating
We are currently investigating a sitewide outage.
investigating
We've spotted that something has gone wrong. We're currently investigating the issue, and will provide an update soon.

Legacy Incident Archive

32 archived records restored. These records predate source-at-observation attestation. They are shown as historical ServiceAlert records only and do not establish a provider-reported incident, resolution, duration, or current active state.

August 2026
Unexpected agent disconnection for some customers
minor Source not attested
Last archived state: resolved
View archived record details
Agent API
monitoring
Agent connectivity is recovered, but some agents are not reconnecting automatically after the earlier forced disconnects. We recommend restarting agent service to make agents reconnect.
monitoring
At 06:04 UTC we deployed a defective request routing change to `agent-edge.buildkite.com`, which caused some customers' agents to abruptly disconnect. At 06:09 UTC we noticed the problem, and immediately reverted the change. We began to observe recovery at 06:10 UTC, and are continuing to monitor.
Buildkite service disruption
minor Source not attested
Last archived state: resolved
View archived record details
Hosted Agents
monitoring
We have confirmed that all background workers have caught up as of 1:13am UTC. Hosted Agents dispatch has returned to normal. We'll continue to to monitor the service and are checking remaining retries.
investigating
We’re investigating elevated latency in background worker processing between approximately 12:39am and 1:02am UTC. Processing has since caught up and was near real time as of 1:13am UTC. We’re continuing to monitor the service and are checking remaining retries. Some builds or hosted-agent-related operations may have experienced delays during this period. We’ll provide another update as soon as we have confirmed the service is stable and have more information about the cause. We apolo...
investigating
We've spotted that something has gone wrong. We're currently investigating the issue, and will provide an update soon.
Slow web UI
minor Source not attested
Last archived state: resolved
View archived record details
monitoring
We have identified and fixed the issue. We are monitoring and seeing signs of improvement.
identified
We've identified the cause of the issue and are actively mitigating.
investigating
We've spotted that something has gone wrong and there's elevated latency. We're currently investigating the issue, and will provide an update soon.
Buildkite service disruption
minor Source not attested
Last archived state: resolved
View archived record details
monitoring
We have reverted the change which introduced the elevated error rate. We believe the issue to be resolved but will continue to monitor.
identified
For a subset of customers, <1% of their Agent API traffic is experiencing issues. We are rolling back the change that caused this issue while we investigate it further.
identified
We're seeing increased latency and error rates for a subset of our customers. We're currently addressing the cause and will provide status updates as they become available.
investigating
We've spotted that something has gone wrong. We're currently investigating the issue, and will provide an update soon.
Slow web UI
minor Source not attested
Last archived state: resolved
View archived record details
monitoring
The integration between Pipelines and Test Engine has been re-enabled, restoring the Tests tab on build pages. We’re monitoring the recovery to confirm the integration remains stable. Test results continue to be available directly through Test Engine.
monitoring
The integration between Pipelines and Test Engine remains temporarily disabled,  and we're actively working to bring this back online. This affects the Tests tab on build pages. We’ll provide another update as recovery progresses. Test results are available directly through Test Engine
monitoring
We have identified and fixed the issue. We are monitoring and seeing signs of improvement. We've temporarily disabled the integration between Pipelines and Test Engine. This affects the Tests tab on build pages. We’ll provide another update as recovery progresses. Test results are available directly through Test Engine
identified
We've identified the cause of the issue and are actively mitigating.
investigating
Our Web UI is slow at the moment, we are investigating the issue.
investigating
We've spotted that something has gone wrong and there's elevated latency. We're currently investigating the issue, and will provide an update soon.
Latency on Pipelines
major Source not attested
Last archived state: resolved
View archived record details
monitoring
The fix has been fully deployed and we are seeing signs of recovery. All events impacted by this issue will be automatically retried. We are continuing to monitor the fix for stability.
identified
We've identified that the impact is more widespread that we initially understood - scheduled builds as well as job dispatch. The fix that is rolling out now is expected to address all impact.
identified
We're experiencing latency with processing job dispatch, pipeline uploads and incoming webhooks. We have identified the cause and are rolling forward with a fix now.
investigating
We've spotted that something has gone wrong. We're currently investigating the issue, and will provide an update soon.
July 2026
Delayed notifications
minor Source not attested
Last archived state: resolved
View archived record details
identified
We are investigating delays to build and job notifications for a subset of customers.
June 2026
Increased latency and error rates
major Source not attested
Last archived state: resolved
View archived record details
monitoring
A fix has been deployed, services are recovering.
identified
We've identified the issue, we're continuing working on rolling out a fix. Impact is restricted to the builds create API for a subset of tenants.
identified
We're seeing increased latency and error rates for a subset of our customers. We're currently investigating and will provide status updates as they become available.
Increased latency on REST and GraphQL APIs
major Source not attested
Last archived state: resolved
View archived record details
monitoring
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.
monitoring
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.
investigating
We're observing increased latency for all our customers. We're currently investigating and will provide status updates as they become available.
Increased latency and error rates
minor Source not attested
Last archived state: resolved
View archived record details
investigating
We're observing increased latency and error rates for a subset of our customers on the Agent API. We're currently investigating and will provide status updates as they become available.