magent

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "PAYMENT-SIGNATURE header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "paymentFlow": "upfront",
        "resourceUrl": "https://api.magentlab.com/api/calc/peld_cr",
        "assetTransferMethod": "eip3009"
      },
      "payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 600
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
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        "withdrawDelay": 86400,
        "receiverAuthorizer": "0x3721824a31197dcDD2984cF43b92B6cc8A87c0Fb",
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      "payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
      "amount": "5000",
      "scheme": "batch-settlement",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 600
    }
  ],
  "resource": {
    "url": "https://api.magentlab.com/api/calc/peld_cr",
    "tags": [
      "peld-cr",
      "liver",
      "pediatric",
      "optn",
      "calculator"
    ],
    "mimeType": "application/json",
    "description": "OPTN Policy 9 Table 9-1 PELD-Cr from age, albumin, bilirubin, INR, creatinine or dialysis/CVVHD, and caller-assigned minimum CDC height or weight Z-score. PELD = (sum of Table 9-1 terms + 1.5287) × 10 + 2.82; nearest integer; minimum 6. Albumin, bilirubin, and INR floor at 1.0; creatinine 1.3 mg/dL if >1.3 or dialysis/CVVHD. Not a transplant listing order. magent does not compute CDC LMS Z from height or weight.",
    "serviceName": "magent"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "inr": 1.5,
            "age_years": 2,
            "min_cdc_z": 0,
            "albumin_g_l": 25,
            "albumin_g_dl": 2.5,
            "bilirubin_mg_dl": 4,
            "bilirubin_umol_l": 68.4,
            "creatinine_mg_dl": 0.4,
            "creatinine_umol_l": 35.368,
            "dialysis_or_cvvhd": false
          }
        },
        "output": {
          "type": "json",
          "example": {
            "inr": 1.5,
            "formula": "optn_peld_cr_2023",
            "peld_cr": 22,
            "citation": {
              "id": "optn-2023-peld-cr",
              "title": "Improving Liver Allocation: MELD, PELD, Status 1A and Status 1B",
              "source": "OPTN Policy 9.1.E / Table 9-1 (policy notice June 2022; implementation 13 Jul 2023)",
              "authors": "Organ Procurement and Transplantation Network"
            },
            "inr_used": 1.5,
            "age_years": 2,
            "min_cdc_z": 0,
            "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
            "albumin_g_dl": 2.5,
            "age_used_years": 2,
            "min_cdc_z_used": -2.1,
            "bilirubin_mg_dl": 4,
            "creatinine_mg_dl": 0.4,
            "albumin_used_g_dl": 1.9,
            "dialysis_or_cvvhd": false,
            "formula_expression": "PELD = round((sum of OPTN Policy 9 Table 9-1 terms + 1.5287)*10 + 2.82); min 6. Age (fractional years, <12): <1 → -0.1967*1; 1-5.5 → -0.1967*age; >5.5 → -0.1967*5.5. Albumin g/dL (floor 1.0): 1-1.9 → -1.842*ln(albumin); >1.9 → -1.842*ln(1.9). Bilirubin mg/dL (floor 1.0): 1-4 → 0.7854*ln(bilirubin)+0.3434*ln(4); >4-40 → 0.7854*ln(4)+0.3434*ln(bilirubin); >40 → 0.7854*ln(4)+0.3434*ln(40). INR (floor 1.0): 1-2 → 1.981*ln(INR)+0.7298*ln(2); >2-10 → 1.981*ln(2)+0.7298*ln(INR); >10 → 1.981*ln(2)+0.7298*ln(10). Min CDC height/weight Z: <-5 → -0.1807*(-5); -5 to -2.1 → -0.1807*Z; >-2.1 → -0.1807*(-2.1). Creatinine mg/dL (1.3 if >1.3 or dialysis/CVVHD): <0.2 → 1.453*ln(0.2); 0.2-1.3 → 1.453*ln(creatinine); >1.3 → 1.453*ln(1.3)",
            "bilirubin_used_mg_dl": 4,
            "creatinine_used_mg_dl": 0.4
          }
        },
        "iconUrl": "https://api.magentlab.com/favicon.ico"
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "headers": {
                "type": "object",
                "additionalProperties": {
                  "type": "string"
                }
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "age_years",
                  "inr",
                  "dialysis_or_cvvhd",
                  "min_cdc_z"
                ],
                "properties": {
                  "inr": {
                    "type": "number",
                    "description": "INR (0.8-20). Policy floors at 1.0; Table 9-1 knots at 2 and 10."
                  },
                  "age_years": {
                    "type": "number",
                    "description": "Age in fractional calendar years (0 to under 12). Table 9-1 uses 1.0 below age 1 and 5.5 above 5.5 years. PELD-Cr is for candidates under 12."
                  },
                  "min_cdc_z": {
                    "type": "number",
                    "description": "Caller-assigned minimum of CDC 2000 height or weight Z-score (LMS). magent does not compute Z from height or weight. Table 9-1 clamps -5.0 to -2.1."
                  },
                  "albumin_g_l": {
                    "type": "number",
                    "description": "Serum albumin in g/L (1-60). Converted as g/dL = g/L / 10."
                  },
                  "albumin_g_dl": {
                    "type": "number",
                    "description": "Serum albumin in g/dL (0.1-6). Provide this or albumin_g_l, not both. Policy floors at 1.0; Table 9-1 uses ln(1.9) above 1.9."
                  },
                  "bilirubin_mg_dl": {
                    "type": "number",
                    "description": "Total bilirubin in mg/dL (0.1-80). Provide this or bilirubin_umol_l, not both. Policy floors at 1.0; Table 9-1 knots at 4 and 40."
                  },
                  "bilirubin_umol_l": {
                    "type": "number",
                    "description": "Total bilirubin in µmol/L (2-1368). Converted as mg/dL = µmol/L / 17.1."
                  },
                  "creatinine_mg_dl": {
                    "type": "number",
                    "description": "Serum creatinine in mg/dL (0.1-20). Provide this or creatinine_umol_l, not both. Table 9-1 floors at 0.2 and assigns 1.3 if >1.3 or dialysis_or_cvvhd is true."
                  },
                  "creatinine_umol_l": {
                    "type": "number",
                    "description": "Serum creatinine in µmol/L (9-1768). Converted as mg/dL = µmol/L / 88.42."
                  },
                  "dialysis_or_cvvhd": {
                    "type": "boolean",
                    "description": "True when the candidate had two or more dialysis treatments in the prior 7 days, or 24 hours of CVVHD in the prior 7 days. Assigns creatinine 1.3 mg/dL."
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2",
      "paymentFlow": "upfront",
      "resourceUrl": "https://api.magentlab.com/api/calc/peld_cr",
      "assetTransferMethod": "eip3009"
    },
    "payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 600
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "items": [
            {
              "inr": 1.5,
              "age_years": 2,
              "min_cdc_z": 0,
              "albumin_g_l": 25,
              "albumin_g_dl": 2.5,
              "bilirubin_mg_dl": 4,
              "bilirubin_umol_l": 68.4,
              "creatinine_mg_dl": 0.4,
              "creatinine_umol_l": 35.368,
              "dialysis_or_cvvhd": false
            },
            {
              "inr": 1.5,
              "age_years": 2,
              "min_cdc_z": 0,
              "albumin_g_l": 25,
              "albumin_g_dl": 2.5,
              "bilirubin_mg_dl": 4,
              "bilirubin_umol_l": 68.4,
              "creatinine_mg_dl": 0.4,
              "creatinine_umol_l": 35.368,
              "dialysis_or_cvvhd": false
            }
          ]
        },
        "type": "http",
        "method": "POST"
      },
      "output": {
        "type": "json",
        "example": {
          "path": "/api/calc/peld_cr",
          "count": 2,
          "items": [
            {
              "inr": 1.5,
              "formula": "optn_peld_cr_2023",
              "peld_cr": 22,
              "citation": {
                "id": "optn-2023-peld-cr",
                "title": "Improving Liver Allocation: MELD, PELD, Status 1A and Status 1B",
                "source": "OPTN Policy 9.1.E / Table 9-1 (policy notice June 2022; implementation 13 Jul 2023)",
                "authors": "Organ Procurement and Transplantation Network"
              },
              "inr_used": 1.5,
              "age_years": 2,
              "min_cdc_z": 0,
              "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
              "albumin_g_dl": 2.5,
              "age_used_years": 2,
              "min_cdc_z_used": -2.1,
              "bilirubin_mg_dl": 4,
              "creatinine_mg_dl": 0.4,
              "albumin_used_g_dl": 1.9,
              "dialysis_or_cvvhd": false,
              "formula_expression": "PELD = round((sum of OPTN Policy 9 Table 9-1 terms + 1.5287)*10 + 2.82); min 6. Age (fractional years, <12): <1 → -0.1967*1; 1-5.5 → -0.1967*age; >5.5 → -0.1967*5.5. Albumin g/dL (floor 1.0): 1-1.9 → -1.842*ln(albumin); >1.9 → -1.842*ln(1.9). Bilirubin mg/dL (floor 1.0): 1-4 → 0.7854*ln(bilirubin)+0.3434*ln(4); >4-40 → 0.7854*ln(4)+0.3434*ln(bilirubin); >40 → 0.7854*ln(4)+0.3434*ln(40). INR (floor 1.0): 1-2 → 1.981*ln(INR)+0.7298*ln(2); >2-10 → 1.981*ln(2)+0.7298*ln(INR); >10 → 1.981*ln(2)+0.7298*ln(10). Min CDC height/weight Z: <-5 → -0.1807*(-5); -5 to -2.1 → -0.1807*Z; >-2.1 → -0.1807*(-2.1). Creatinine mg/dL (1.3 if >1.3 or dialysis/CVVHD): <0.2 → 1.453*ln(0.2); 0.2-1.3 → 1.453*ln(creatinine); >1.3 → 1.453*ln(1.3)",
              "bilirubin_used_mg_dl": 4,
              "creatinine_used_mg_dl": 0.4
            },
            {
              "inr": 1.5,
              "formula": "optn_peld_cr_2023",
              "peld_cr": 22,
              "citation": {
                "id": "optn-2023-peld-cr",
                "title": "Improving Liver Allocation: MELD, PELD, Status 1A and Status 1B",
                "source": "OPTN Policy 9.1.E / Table 9-1 (policy notice June 2022; implementation 13 Jul 2023)",
                "authors": "Organ Procurement and Transplantation Network"
              },
              "inr_used": 1.5,
              "age_years": 2,
              "min_cdc_z": 0,
              "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
              "albumin_g_dl": 2.5,
              "age_used_years": 2,
              "min_cdc_z_used": -2.1,
              "bilirubin_mg_dl": 4,
              "creatinine_mg_dl": 0.4,
              "albumin_used_g_dl": 1.9,
              "dialysis_or_cvvhd": false,
              "formula_expression": "PELD = round((sum of OPTN Policy 9 Table 9-1 terms + 1.5287)*10 + 2.82); min 6. Age (fractional years, <12): <1 → -0.1967*1; 1-5.5 → -0.1967*age; >5.5 → -0.1967*5.5. Albumin g/dL (floor 1.0): 1-1.9 → -1.842*ln(albumin); >1.9 → -1.842*ln(1.9). Bilirubin mg/dL (floor 1.0): 1-4 → 0.7854*ln(bilirubin)+0.3434*ln(4); >4-40 → 0.7854*ln(4)+0.3434*ln(bilirubin); >40 → 0.7854*ln(4)+0.3434*ln(40). INR (floor 1.0): 1-2 → 1.981*ln(INR)+0.7298*ln(2); >2-10 → 1.981*ln(2)+0.7298*ln(INR); >10 → 1.981*ln(2)+0.7298*ln(10). Min CDC height/weight Z: <-5 → -0.1807*(-5); -5 to -2.1 → -0.1807*Z; >-2.1 → -0.1807*(-2.1). Creatinine mg/dL (1.3 if >1.3 or dialysis/CVVHD): <0.2 → 1.453*ln(0.2); 0.2-1.3 → 1.453*ln(creatinine); >1.3 → 1.453*ln(1.3)",
              "bilirubin_used_mg_dl": 4,
              "creatinine_used_mg_dl": 0.4
            }
          ]
        }
      },
      "iconUrl": "https://api.magentlab.com/favicon.ico"
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "items"
              ],
              "properties": {
                "items": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "age_years",
                      "inr",
                      "dialysis_or_cvvhd",
                      "min_cdc_z"
                    ],
                    "properties": {
                      "inr": {
                        "type": "number",
                        "description": "INR (0.8-20). Policy floors at 1.0; Table 9-1 knots at 2 and 10."
                      },
                      "age_years": {
                        "type": "number",
                        "description": "Age in fractional calendar years (0 to under 12). Table 9-1 uses 1.0 below age 1 and 5.5 above 5.5 years. PELD-Cr is for candidates under 12."
                      },
                      "min_cdc_z": {
                        "type": "number",
                        "description": "Caller-assigned minimum of CDC 2000 height or weight Z-score (LMS). magent does not compute Z from height or weight. Table 9-1 clamps -5.0 to -2.1."
                      },
                      "albumin_g_l": {
                        "type": "number",
                        "description": "Serum albumin in g/L (1-60). Converted as g/dL = g/L / 10."
                      },
                      "albumin_g_dl": {
                        "type": "number",
                        "description": "Serum albumin in g/dL (0.1-6). Provide this or albumin_g_l, not both. Policy floors at 1.0; Table 9-1 uses ln(1.9) above 1.9."
                      },
                      "bilirubin_mg_dl": {
                        "type": "number",
                        "description": "Total bilirubin in mg/dL (0.1-80). Provide this or bilirubin_umol_l, not both. Policy floors at 1.0; Table 9-1 knots at 4 and 40."
                      },
                      "bilirubin_umol_l": {
                        "type": "number",
                        "description": "Total bilirubin in µmol/L (2-1368). Converted as mg/dL = µmol/L / 17.1."
                      },
                      "creatinine_mg_dl": {
                        "type": "number",
                        "description": "Serum creatinine in mg/dL (0.1-20). Provide this or creatinine_umol_l, not both. Table 9-1 floors at 0.2 and assigns 1.3 if >1.3 or dialysis_or_cvvhd is true."
                      },
                      "creatinine_umol_l": {
                        "type": "number",
                        "description": "Serum creatinine in µmol/L (9-1768). Converted as mg/dL = µmol/L / 88.42."
                      },
                      "dialysis_or_cvvhd": {
                        "type": "boolean",
                        "description": "True when the candidate had two or more dialysis treatments in the prior 7 days, or 24 hours of CVVHD in the prior 7 days. Assigns creatinine 1.3 mg/dL."
                      }
                    }
                  },
                  "maxItems": 25,
                  "minItems": 1
                }
              },
              "additionalProperties": false
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "type": "string",
              "const": "POST"
            },
            "headers": {
              "type": "object",
              "additionalProperties": {
                "type": "string"
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog

2026-09-04 05:51Z

Last indexed by Roundhouse

2026-09-07 06:20Z

Last enriched (probe, favicon, geo)

2026-09-12 15:45Z

x402 version

2

Max timeout

600s

Liveness probe

HTTP 0