1.9.1

crewAIInc/crewAI1.9.1Jan 28, 2026by greysonlalonde

AI Summary

This release focuses on enhancing agent execution control by adding tool call hooks and structured output support across providers, while fixing critical bugs in tool-calling serialization.

Key Highlights

Implement before and after tool call hooks in CrewAgentExecutor
Add structured outputs and response_format support across providers
Fix tool-calling content handling and schema serialization bugs

New Features

Implement before and after tool call hooks in CrewAgentExecutor
Add structured outputs and response_format support across providers

Full Release Notes

## What's Changed

### Features
- Implement before and after tool call hooks in CrewAgentExecutor
- Add structured outputs and response_format support across providers

### Bug Fixes
- Correct tool-calling content handling and schema serialization

## Contributors

@greysonlalonde, @lorenzejay