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Human-in-the-Loop (HITL)

Human-in-the-Loop (HITL) enables human oversight for AI decisions by pausing execution and requiring manual approval before proceeding. This is essential for regulatory compliance (EU AI Act Article 14, SEBI AI/ML, RBI FREE-AI) and high-risk decision oversight.

The require_approval Action​

AxonFlow supports a require_approval policy action that triggers HITL workflows:

# Example policy with require_approval
name: "High-Value Transaction Oversight"
pattern: "(amount|value|total).*\\$[1-9][0-9]{6,}"
action: require_approval
severity: high

Community vs Enterprise​

CapabilityCommunityEnterprise
require_approval action✅✅
Auto-approve (pass-through)✅-
HITL approval queue-✅
Customer Portal approval UI-✅
Multi-level approval workflows-✅
SLA management & escalation-✅
Approval audit trail-✅
Programmatic approval API-✅
Community Behavior

In Community Edition, require_approval auto-approves immediately. This allows you to define HITL policies and test patterns, but actual human review requires Enterprise Edition.

Use Cases​

  • EU AI Act Article 14: Human oversight for high-risk AI systems
  • SEBI AI/ML Circular: High-value transaction oversight (>₹10 lakh)
  • RBI FREE-AI: Human review for sensitive banking operations
  • Admin Access: Require approval for privileged operations

Policy Actions Reference​

ActionDescriptionCommunityEnterprise
blockImmediately block request✅✅
require_approvalPause for human approvalAuto-approveFull queue
redactMask sensitive content✅✅
warnLog warning, allow request✅✅
logAudit only✅✅

Getting Started​

You can create policies with require_approval in Community to prepare for Enterprise:

curl -X POST http://localhost:8080/api/v1/policies/static \
  -H "Content-Type: application/json" \
  -H "X-Tenant-ID: your-tenant-id" \
  -d '{
    "name": "High-Value Transaction Oversight",
    "pattern": "(amount|value|total).*\\$[1-9][0-9]{6,}",
    "action": "require_approval",
    "severity": "high",
    "enabled": true
  }'

Working examples are available in the repository:

git clone https://github.com/getaxonflow/axonflow.git
cd axonflow/examples/hitl

Enterprise HITL Features​

Enterprise Edition

For full HITL functionality including approval queues, workflows, and compliance reporting: