[Release] crewaiInc/crewAI 1.15.7: 1.15.7

CrewAI v1.15.7 release includes critical bug fixes for registry skills resolution, GPT-5.6 tool compatibility, and responses-only model routing. The update enhances observability by emitting skill usage events at runtime and addresses a security vulnerability in bedrock-agentcore. This patch ensures improved tool calling functionality across different API paths and model types.

Key Points

• •Registry skills now resolve through the runtime's CrewAI+ client for better integration
• •Fixed GPT-5.6 compatibility issue with tools and reasoning_effort parameter (400 error)
• •Tool calling functionality restored on the Responses API path
• •Responses-only models now properly routed instead of returning 404 errors
• •Security patch: Bedrock-agentcore updated to address CVE-2026-16796
• •New observability feature: Skill usage events emitted at runtime for monitoring
• •Documentation updated with snapshot and changelog for v1.15.7a1

Workflow Diagram

Concepts