strands-agents
[FEATURE] Support Human-in-the-Loop (HIL) capabilities
Problem Statement
Consider to provide Human-in-the-Loop (HIL) capabilities to enable human intervention at any point during execution
Proposed Solution
Enhancement on existing mechanism that could be used to implement HIL patterns:
Callback Handler System
Through the callback handler system. The Agent class accepts a callback_handler parameter that receives events throughout execution and processes events during the event loop cycle.
Tool-Based Intervention Points
Through custom tools that can pause execution and request human input. The tool system supports custom Python functions decorated with @tool, and tools can access the agent context through parameter injection.
Streaming Interface for Real-time Monitoring
Through stream_async() that yields events as they occur. This could enable real-time monitoring and intervention, though it would require custom implementation to pause execution.
Request State Management
The event loop maintains a request_state that can be modified during execution in event loop. A custom implementation could use this to signal when human intervention is needed.
Use Case
Provide robust mechanisms for pausing workflows, collecting human input, and resuming execution with the provided feedback or modifications, which are common cases in regulation impose and data sensitive industries, e.g. Finance
Alternatives Solutions
No response
Additional Context
No response
