{
      "name": "arc-stablefx",
      "domain": "Digital-Asset Rails",
      "title": "Arc StableFX Risk Elimination",
      "description": "W-B chain. Quantify Herstatt risk and FX spread savings from Arc StableFX atomic PvP vs non-CLS bilateral settlement.",
      "composer_url": "https://ainumbers.co/chaingraph/chains/arc-stablefx.html",
      "steps": [
        {
          "tool_id": "art-42-arc-fit-diagnostic",
          "handoff": "arc_score → StableFX dimension primary"
        },
        {
          "tool_id": "art-44-arc-stablefx-model",
          "handoff": "herstatt_exposure, annual_benefit_usd, verdict — StableFX economics — final stage"
        }
      ]
    }