{
      "name": "arc-agentic-commerce",
      "domain": "Digital-Asset Rails",
      "title": "Arc Agentic Commerce",
      "description": "W-E chain. Model agentic commerce economics on Arc: Paymaster gas abstraction + CPN settlement for autonomous agent payment flows.",
      "composer_url": "https://ainumbers.co/chaingraph/chains/arc-agentic-commerce.html",
      "steps": [
        {
          "tool_id": "art-42-arc-fit-diagnostic",
          "handoff": "arc_score → agentic commerce dimension primary"
        },
        {
          "tool_id": "art-46-arc-paymaster-model",
          "handoff": "paymaster_verdict, sponsorship_breakeven feed Stage 3 CPN economics"
        },
        {
          "tool_id": "art-43-arc-cpn-model",
          "handoff": "npv_3yr, cost_per_payment — Exports agentic commerce mandate — final stage"
        }
      ]
    }