AI screen, human approve, then send

{
  "format": "mantle-workflow/v1",
  "id": "hitl-approval-gate",
  "name": "AI screen, human approve, then send",
  "graph": {
    "nodes": [
      {
        "id": "webhook",
        "type": "trigger.webhook",
        "label": "Request in",
        "config": {
          "slug": "approval-request",
          "input_schema": {
            "required": [
              "request",
              "requester_email"
            ],
            "properties": {
              "request": {
                "type": "string"
              },
              "requester_email": {
                "type": "string"
              }
            }
          }
        },
        "connection_id": null,
        "worker_type": "generic-worker",
        "position": {
          "x": 60,
          "y": 220
        }
      },
      {
        "id": "ai_classify",
        "type": "ai.classify",
        "label": "Risk screen",
        "config": {
          "model": "claude-haiku-4-5",
          "labels": [
            "low_risk",
            "needs_review",
            "high_risk"
          ],
          "text": "{{ $json.request }}",
          "temperature": 0
        },
        "connection_id": null,
        "worker_type": "ai-worker",
        "position": {
          "x": 380,
          "y": 220
        }
      },
      {
        "id": "reviewer",
        "type": "human.prompt",
        "label": "Reviewer decision",
        "config": {
          "prompt_text": "Request from {{ steps.webhook.requester_email }} (AI: {{ steps.ai_classify.response.label }}, {{ steps.ai_classify.response.confidence }}):\n\n{{ steps.webhook.request }}",
          "options": [
            {
              "id": "approve",
              "label": "Approve"
            },
            {
              "id": "reject",
              "label": "Reject"
            }
          ],
          "timeout_seconds": 172800
        },
        "connection_id": null,
        "worker_type": "generic-worker",
        "position": {
          "x": 700,
          "y": 220
        }
      },
      {
        "id": "branch_approved",
        "type": "control.branch",
        "label": "Approved?",
        "config": {
          "mode": "first_match"
        },
        "connection_id": null,
        "worker_type": "generic-worker",
        "position": {
          "x": 1020,
          "y": 220
        }
      },
      {
        "id": "send_approved",
        "type": "mail.send",
        "label": "Send approval",
        "config": {
          "to": "{{ steps.webhook.requester_email }}",
          "subject": "Your request was approved",
          "body_text": "Good news — your request has been approved.\n\n{{ steps.webhook.request }}"
        },
        "connection_id": null,
        "worker_type": "generic-worker",
        "position": {
          "x": 1340,
          "y": 30
        }
      },
      {
        "id": "send_rejected",
        "type": "mail.send",
        "label": "Send rejection",
        "config": {
          "to": "{{ steps.webhook.requester_email }}",
          "subject": "Your request was not approved",
          "body_text": "Unfortunately your request was not approved. Reply to this email if you have questions.\n\n{{ steps.webhook.request }}"
        },
        "connection_id": null,
        "worker_type": "generic-worker",
        "position": {
          "x": 1340,
          "y": 410
        }
      }
    ],
    "edges": [
      {
        "from": "webhook",
        "to": "ai_classify"
      },
      {
        "from": "ai_classify",
        "to": "reviewer"
      },
      {
        "from": "reviewer",
        "to": "branch_approved"
      },
      {
        "from": "branch_approved",
        "to": "send_approved",
        "branch": "true",
        "condition": {
          "match": "all",
          "rules": [
            {
              "left": "response",
              "op": "equals",
              "right": "approve"
            }
          ]
        },
        "label": "approve"
      },
      {
        "from": "branch_approved",
        "to": "send_rejected",
        "branch": "false",
        "label": "reject",
        "priority": 1
      }
    ]
  }
}