[Release] crewaiInc/crewAI 1.15.9: 1.15.9

crewAI 1.15.9 release introduces improved error handling by surfacing tool failures explicitly rather than masking them as successes, adds FlowFailedEvent emission for better flow execution monitoring, and implements progressive disclosure for skills. The release includes documentation updates for the previous version and contributions from multiple team members.

Key Points

• •Tool failures are now surfaced explicitly instead of being reported as success, improving error visibility and debugging
• •FlowFailedEvent is emitted when flow execution fails, enabling better event-driven monitoring and error handling
• •Progressive disclosure for skills has been implemented, likely improving UX by revealing skill details gradually
• •Documentation snapshot and changelog updated for v1.15.8 to maintain version history accuracy
• •Release maintains backward compatibility while enhancing error handling and observability features
• •Multiple contributors involved including core maintainers (@joaomdmoura, @lucasgomide) and automation (@github-actions[bot])

Workflow Diagram

Concepts