{
      "tool_id": "art-346-compute-experience-mod",
      "tool_version": "1.0.0",
      "display_name": "NCCI Experience Modification Calculator",
      "mcp_name": "compute_experience_mod",
      "mandate_type": "compliance_mandate",
      "wave": 60,
      "gpu": false,
      "url": "https://ainumbers.co/chaingraph/art-346-compute-experience-mod.html",
      "description": "Workers'-compensation experience rating modification (NCCI Experience Rating Plan Manual published national formula): per-claim primary/excess loss split at the state split point, then Mod = (Ap + W×Ae + (1-W)×Ee + B) / (Ep + B). Split point, expected losses, expected primary losses, weighting value, and ballast value are licensed NCCI/state rating-bureau table values supplied by the caller from their own experience rating worksheet -- this node never vendors or reproduces those tables, only the published split-and-mod formula.",
      "input_schema_ref": "chaingraph/art-346-compute-experience-mod.html#manifest",
      "consumes": [],
      "feeds": [],
      "status": "live",
      "conformance_fixtures": true,
      "compute_capability": "server",
      "compute_images": [{"system":"sha256-source","image_id":"sha256:23a53d6a4168ee19c365556e8672f02cf9d36e2f6445a4d2fc8db1c511d953f5","valid_from":"2026-07-10"},{"system":"risc0","image_id":"sha256:a1a0bc89b5b1febaeda3519f6dbade0fa5ac16beeb143c4e1b01689573567bc6","valid_from":"2026-07-17"}],
      "export_capability": [
        "json"
      ],
      "compute_proof_ready": "ready",
      "compute_proof": {
        "type": "ZkVmReceipt",
        "system": "risc0",
        "receiptFormat": "groth16-bn254",
        "imageId": "sha256:a1a0bc89b5b1febaeda3519f6dbade0fa5ac16beeb143c4e1b01689573567bc6",
        "seal": "HNTRFu/CbaXsMBG4OyHqBGLLURGevV/CdJfyxf9pIg4uo1vTlOn4UOyf2M3XR7s/htXDa1oiEJHy6I81ArJpoyCEJgTzXY2dFSNPAXAbQur0wQabT/uETIXEBUPHGKvVGLJ5sfMBwRXczwtMyx4LurZjL7pdwE1OtRFdu7ibp6wEwUGxqDklJrhE9TIoHe03FCpYPrjQ6yxzAqdkXSB7Vy7TofN6Q3+oNu5fbOEtGyEwFsr2SyurqOLqH1NbxzGaEjpiYERtrNWvpq/LkGv4vjUNUq+WRYKf88cq73vb1EYBIr6ctv3A43qa2yfl+4HGFN8Kexz5PVPydMf3ZJ/18A==",
        "journal": {
          "chaingraph_version": "0.4.0",
          "kernel_digest": "sha256:23a53d6a4168ee19c365556e8672f02cf9d36e2f6445a4d2fc8db1c511d953f5",
          "output": {
            "actual_excess_losses": 35000,
            "actual_primary_losses": 38000,
            "actual_total_losses": 73000,
            "ballast_value": 12000,
            "claim_count": 3,
            "expected_excess_losses": 36000,
            "expected_losses": 60000,
            "expected_primary_losses": 24000,
            "mod": 2.38,
            "note": "Split point, expected losses, expected primary losses, weighting value, and ballast value are licensed NCCI/state rating-bureau table values supplied by the caller from their own NCCI experience rating worksheet -- this kernel never vendors or reproduces those tables, only the published per-claim split and mod formula.",
            "rating_class": "debit",
            "regulatory_basis": "NCCI Experience Rating Plan Manual (published national experience rating formula: Mod = (Ap + W×Ae + (1-W)×Ee + B) / (Ep + B))",
            "split_point": 15000,
            "weighting_value": 0.25
          }
        }
      }
    }