Treasure Data incident
[All Regions] AI Agent Foundry May Provide Incomplete Responses
Treasure Data experienced a major incident on September 30, 2025 affecting Web Interface and Web Interface and 1 more component, lasting 3h 45m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Sep 30, 2025, 03:37 AM UTC
We are currently investigating an issue where AI agents in the AI Agent Foundry may prematurely stop their response without providing a final conclusion, especially during their thinking process. This behavior does not generate an error message. Our initial findings show it is more likely to occur in agents handling long or extensive conversations, though we have not yet identified a specific threshold. Our engineering team is actively investigating the root cause. We will provide another update as soon as more information is available. We apologize for any inconvenience this may cause.
- identified Sep 30, 2025, 06:08 AM UTC
We have an update on the root cause of the issue causing AI agents to provide incomplete responses. Our investigation has found that when an agent uses its tools, the user's original prompt was being sent multiple times to the underlying AI model. This duplication caused the model to incorrectly process the tool results, leading it to return an empty response instead of a complete answer. The hotfix we are preparing will correct this behavior by ensuring the user's prompt is sent only once for each task. This will allow the AI to properly process all tool results and generate a complete, final response. We are working to deploy this fix as quickly as possible and will provide another update once it is ready. Thank you for your continued patience.
- monitoring Sep 30, 2025, 06:53 AM UTC
The hotfix for the incomplete agent responses has been deployed. This should prevent the duplicate prompt issue during tool use. We are now monitoring the platform to ensure everything is working as expected. We will resolve this incident once we've confirmed stability.
- resolved Sep 30, 2025, 07:22 AM UTC
After a successful 30-minute monitoring period, we can confirm that our fix is working and the issue is now resolved. All AI agents are functioning as expected. Thank you for your patience.