{
      "name": "arc-fit",
      "domain": "Digital-Asset Rails",
      "title": "Arc Fit Diagnostic",
      "description": "D0 entry chain. 12-question diagnostic scoring CPN, StableFX, DvP, and agentic commerce fit for Circle Arc L1.",
      "composer_url": "https://ainumbers.co/chaingraph/chains/arc-fit.html",
      "steps": [
        {
          "tool_id": "art-42-arc-fit-diagnostic",
          "handoff": "arc_score, dimension scores, and cctp_routing_flag route to appropriate Arc chain"
        }
      ]
    }