Human-in-the-Loop

Human-in-the-Loop (HITL) bridges the gap between full automation and manual control. It treats the human user as a "privileged tool" or "approver". This is crucial for high-stakes domains where AI errors are unacceptable, or for ambiguous tasks where human intuition is required to guide the agent.

When to Use

• High Consequence: Transferring money, deploying code to production, sending emails to customers.
• Ambiguity Resolution: When the user's intent is unclear ("Book me a flight" -> "Which day?").
• Active Learning: Collecting human feedback to improve the model (RLHF).
• Quality Assurance: Reviewing the final draft of a report before publication.

Use Cases

• Approval Workflow: Agent drafts a reply -> Human approves/edits -> Agent sends.
• Escalation: Chatbot handles simple queries -> Escalates to human support for complex issues.
• Clarification: Agent: "I found 3 files. Which one do you mean?" -> Human selects.

Implementation Pattern