[Release] crewaiInc/crewAI 1.10.0: 1.10.0

CrewAI 1.10.0 introduces enhanced MCP tool resolution, improved JSON argument parsing, user input handling in Flows, and migrates the CLI HTTP client from requests to httpx. The release includes 20+ bug fixes addressing tool validation, schema handling, callback execution, and race conditions, plus documentation updates for security guidance and 96 new integration actions.

Key Points

• •Enhanced MCP tool resolution with improved event handling and complex schema $ref pointer resolution for better tool integration
• •Implemented user input handling in Flows and improved HITL (Human-in-the-Loop) self-loop functionality for human feedback workflows
• •Migrated CLI HTTP client from requests to httpx for improved performance and async support
• •Fixed critical tool validation issues: validate kwargs even when empty, preserve null types in schemas, and enforce additionalProperties=false
• •Added started_event_id tracking in eventbus and auto-update tools.specs for better event management and tool synchronization
• •Resolved race conditions in guardrail event emission and fixed cyclic flows breaking when persistence ID is passed in inputs
• •Refactored crew to provider pattern and extracted HITL to provider pattern for improved architecture and maintainability
• •Updated lancedb version with lance-namespace packages and added versioned documentation with yanked detection for version notes
• •Enhanced JSON argument parsing and validation in CrewAgentExecutor and BaseTool with improved type preservation for enums and structured outputs
• •Added 96 missing actions across 9 integrations and clarified NL2SQL security model with hardening guidance

Workflow Diagram

Concepts