{
      "name": "card-interchange",
      "domain": "Card & Payment Economics",
      "title": "Interchange Optimisation to Scheme Compliance",
      "description": "Interchange optimisation > Visa/MC qualification testing > scheme fee benchmarking > 3DS/EMV compliance.",
      "composer_url": "https://ainumbers.co/chaingraph/chains/card-interchange.html",
      "steps": [
        {
          "tool_id": "52-interchange-optimizer",
          "handoff": "optimal_mcc and routing_strategy feed T225 qualification testing"
        },
        {
          "tool_id": "225-visa-mc-interchange-qualification-tester",
          "handoff": "ic_category and qualification_flags feed T233 scheme fee benchmarking"
        },
        {
          "tool_id": "233-card-scheme-fee-benchmarking",
          "handoff": "fee_delta and scheme_comparison feed T228 3DS/EMV compliance"
        },
        {
          "tool_id": "228-3ds-emv-compliance-checker",
          "handoff": "Exports card interchange Policy Mandate -- final stage"
        }
      ]
    }