magent

Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.

Tradingofflineeip155:8453Exactvia cdp
Cp-akiCisplatinKidneyAkiOncology
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 7 snapshots so far.
$13.75
Verified settled volume
2,750 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-02 05:28Z
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x836Be278f1739fB4308091cD1852F7971Bc19Ee2

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

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/cp_aki",
        "assetTransferMethod": "eip3009"
      },
      "payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 600
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "withdrawDelay": 86400,
        "receiverAuthorizer": "0x3721824a31197dcDD2984cF43b92B6cc8A87c0Fb",
        "assetTransferMethod": "eip3009"
      },
      "payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
      "amount": "5000",
      "scheme": "batch-settlement",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 600
    }
  ],
  "resource": {
    "url": "https://api.magentlab.com/api/calc/cp_aki",
    "tags": [
      "cp-aki",
      "cisplatin",
      "kidney",
      "aki",
      "oncology"
    ],
    "mimeType": "application/json",
    "description": "Gupta 2024 Figure 2 simple CP-AKI score after first IV cisplatin: age, hypertension, diabetes, current or former smoking, hemoglobin g/L, WBC, albumin g/L, magnesium mmol/L, and cisplatin dose mg. Max 22.5. Low / moderate / high / very_high. Not a diagnosis or chemo order. magent does not assay labs or dose cisplatin.",
    "serviceName": "magent"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "age": 40,
            "wbc_ul": 8000,
            "diabetes": false,
            "wbc_k_ul": 8,
            "albumin_g_l": 42,
            "albumin_g_dl": 4.2,
            "hypertension": false,
            "hemoglobin_g_l": 130,
            "hemoglobin_g_dl": 13,
            "magnesium_mmol_l": 0.9,
            "cisplatin_dose_mg": 50,
            "current_or_former_smoker": false
          }
        },
        "output": {
          "type": "json",
          "example": {
            "age": 40,
            "score": 0,
            "formula": "cp_aki",
            "citation": {
              "id": "gupta-2024",
              "doi": "10.1136/bmj-2023-077169",
              "pmid": "38538012",
              "title": "Derivation and external validation of a simple risk score for predicting severe acute kidney injury after intravenous cisplatin: cohort study",
              "source": "BMJ. 2024;384:e077169",
              "authors": "Gupta S, et al."
            },
            "max_score": 22.5,
            "components": [
              {
                "value": 40,
                "factor": "age",
                "points": 0,
                "present": false
              },
              {
                "factor": "hypertension",
                "points": 0,
                "present": false
              },
              {
                "factor": "diabetes",
                "points": 0,
                "present": false
              },
              {
                "factor": "current_or_former_smoker",
                "points": 0,
                "present": false
              },
              {
                "value": 130,
                "factor": "hemoglobin",
                "points": 0,
                "present": false
              },
              {
                "value": 8,
                "factor": "wbc",
                "points": 0,
                "present": false
              },
              {
                "value": 42,
                "factor": "albumin",
                "points": 0,
                "present": false
              },
              {
                "value": 0.9,
                "factor": "magnesium",
                "points": 0,
                "present": false
              },
              {
                "value": 50,
                "factor": "cisplatin_dose",
                "points": 0,
                "present": false
              }
            ],
            "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.",
            "risk_group": "low",
            "wbc_10e9_l": 8,
            "albumin_g_l": 42,
            "hemoglobin_g_l": 130,
            "magnesium_mmol_l": 0.9,
            "cisplatin_dose_mg": 50,
            "formula_expression": "CP-AKI simple = age (≤45 0; 46-60 2.5; 61-70 3.5; >70 4.5) + hypertension 1 + diabetes 1 + current_or_former_smoker 1 + hemoglobin_g_l (≥120 0; 110-119 1; <110 1.5) + wbc_10e9_l (≤12.0 0; >12.0 1.5) + albumin_g_l (>38 0; 33-38 1; <33 1.5) + magnesium_mmol_l (≥0.82 0; <0.82 1) + cisplatin_dose_mg (≤50 0; 51-75 2; 76-100 2.5; 101-125 3; 126-150 5; 151-200 7.5; >200 9.5); Gupta 2024 Figure 2 odds-ratio points; max 22.5; no creatinine; no platelets; low 0-5.5 / moderate 6-9.5 / high 10-15.5 / very_high ≥16"
          }
        },
        "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",
                  "hypertension",
                  "diabetes",
                  "current_or_former_smoker",
                  "magnesium_mmol_l",
                  "cisplatin_dose_mg"
                ],
                "properties": {
                  "age": {
                    "type": "integer",
                    "description": "Age in years (integer 18-120). Gupta 2024 Figure 2: ≤45 scores 0; 46-60 scores 2.5; 61-70 scores 3.5; >70 scores 4.5."
                  },
                  "wbc_ul": {
                    "type": "number",
                    "description": "White blood cell count per µL (10-500000). Converted as wbc_10e9_l = wbc_ul / 1000. Provide this or wbc_k_ul, not both."
                  },
                  "diabetes": {
                    "type": "boolean",
                    "description": "Caller-assigned diabetes mellitus (Gupta 2024 Figure 2). true scores 1. magent does not diagnose diabetes."
                  },
                  "wbc_k_ul": {
                    "type": "number",
                    "description": "White blood cell count in 10^9/L (0.01-500), same as k/µL. Provide this or wbc_ul, not both. ≤12.0 scores 0; >12.0 scores 1.5 (Gupta 2024 Figure 2). magent does not assay WBC."
                  },
                  "albumin_g_l": {
                    "type": "number",
                    "description": "Serum albumin in g/L (10-60), Gupta 2024 units. Provide this or albumin_g_dl, not both. >38 scores 0; 33-38 scores 1; <33 scores 1.5. magent does not assay albumin."
                  },
                  "albumin_g_dl": {
                    "type": "number",
                    "description": "Serum albumin in g/dL (1-6). Converted as albumin_g_l = albumin_g_dl × 10. Provide this or albumin_g_l, not both."
                  },
                  "hypertension": {
                    "type": "boolean",
                    "description": "Caller-assigned hypertension (Gupta 2024 Figure 2). true scores 1. magent does not diagnose hypertension."
                  },
                  "hemoglobin_g_l": {
                    "type": "number",
                    "description": "Hemoglobin in g/L (30-220), Gupta 2024 units. Provide this or hemoglobin_g_dl, not both. ≥120 scores 0; 110-119 scores 1; <110 scores 1.5. magent does not assay hemoglobin."
                  },
                  "hemoglobin_g_dl": {
                    "type": "number",
                    "description": "Hemoglobin in g/dL (3-22). Converted as hemoglobin_g_l = hemoglobin_g_dl × 10. Provide this or hemoglobin_g_l, not both."
                  },
                  "magnesium_mmol_l": {
                    "type": "number",
                    "description": "Serum magnesium in mmol/L (0.2-2.5), Gupta 2024 units. ≥0.82 scores 0; <0.82 scores 1. magent does not assay magnesium."
                  },
                  "cisplatin_dose_mg": {
                    "type": "number",
                    "description": "First intravenous cisplatin dose in mg (1-500), Gupta 2024 Figure 2. ≤50 scores 0; 51-75 scores 2; 76-100 scores 2.5; 101-125 scores 3; 126-150 scores 5; 151-200 scores 7.5; >200 scores 9.5. magent does not dose cisplatin."
                  },
                  "current_or_former_smoker": {
                    "type": "boolean",
                    "description": "Caller-assigned current or former smoker (Gupta 2024 Figure 2 simple score; BMJ 2024;385:q1207). true scores 1. magent does not take a smoking history."
                  }
                }
              }
            },
            "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.

0.005USDC≈ $0.005 USD
on Base · exact scheme

Pay 0.005 USDC on Base to 0x836B…19Ee2. The signed payment is good for 10 minutes.

USD Coin contract
0x8335…02913
Payment window
10 minutes
As published
5000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2",
      "paymentFlow": "upfront",
      "resourceUrl": "https://api.magentlab.com/api/calc/cp_aki",
      "assetTransferMethod": "eip3009"
    },
    "payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 600
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "items": [
            {
              "age": 40,
              "wbc_ul": 8000,
              "diabetes": false,
              "wbc_k_ul": 8,
              "albumin_g_l": 42,
              "albumin_g_dl": 4.2,
              "hypertension": false,
              "hemoglobin_g_l": 130,
              "hemoglobin_g_dl": 13,
              "magnesium_mmol_l": 0.9,
              "cisplatin_dose_mg": 50,
              "current_or_former_smoker": false
            },
            {
              "age": 40,
              "wbc_ul": 8000,
              "diabetes": false,
              "wbc_k_ul": 8,
              "albumin_g_l": 42,
              "albumin_g_dl": 4.2,
              "hypertension": false,
              "hemoglobin_g_l": 130,
              "hemoglobin_g_dl": 13,
              "magnesium_mmol_l": 0.9,
              "cisplatin_dose_mg": 50,
              "current_or_former_smoker": false
            }
          ]
        },
        "type": "http",
        "method": "POST"
      },
      "output": {
        "type": "json",
        "example": {
          "path": "/api/calc/cp_aki",
          "count": 2,
          "items": [
            {
              "age": 40,
              "score": 0,
              "formula": "cp_aki",
              "citation": {
                "id": "gupta-2024",
                "doi": "10.1136/bmj-2023-077169",
                "pmid": "38538012",
                "title": "Derivation and external validation of a simple risk score for predicting severe acute kidney injury after intravenous cisplatin: cohort study",
                "source": "BMJ. 2024;384:e077169",
                "authors": "Gupta S, et al."
              },
              "max_score": 22.5,
              "components": [
                {
                  "value": 40,
                  "factor": "age",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "hypertension",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "diabetes",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "current_or_former_smoker",
                  "points": 0,
                  "present": false
                },
                {
                  "value": 130,
                  "factor": "hemoglobin",
                  "points": 0,
                  "present": false
                },
                {
                  "value": 8,
                  "factor": "wbc",
                  "points": 0,
                  "present": false
                },
                {
                  "value": 42,
                  "factor": "albumin",
                  "points": 0,
                  "present": false
                },
                {
                  "value": 0.9,
                  "factor": "magnesium",
                  "points": 0,
                  "present": false
                },
                {
                  "value": 50,
                  "factor": "cisplatin_dose",
                  "points": 0,
                  "present": false
                }
              ],
              "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.",
              "risk_group": "low",
              "wbc_10e9_l": 8,
              "albumin_g_l": 42,
              "hemoglobin_g_l": 130,
              "magnesium_mmol_l": 0.9,
              "cisplatin_dose_mg": 50,
              "formula_expression": "CP-AKI simple = age (≤45 0; 46-60 2.5; 61-70 3.5; >70 4.5) + hypertension 1 + diabetes 1 + current_or_former_smoker 1 + hemoglobin_g_l (≥120 0; 110-119 1; <110 1.5) + wbc_10e9_l (≤12.0 0; >12.0 1.5) + albumin_g_l (>38 0; 33-38 1; <33 1.5) + magnesium_mmol_l (≥0.82 0; <0.82 1) + cisplatin_dose_mg (≤50 0; 51-75 2; 76-100 2.5; 101-125 3; 126-150 5; 151-200 7.5; >200 9.5); Gupta 2024 Figure 2 odds-ratio points; max 22.5; no creatinine; no platelets; low 0-5.5 / moderate 6-9.5 / high 10-15.5 / very_high ≥16"
            },
            {
              "age": 40,
              "score": 0,
              "formula": "cp_aki",
              "citation": {
                "id": "gupta-2024",
                "doi": "10.1136/bmj-2023-077169",
                "pmid": "38538012",
                "title": "Derivation and external validation of a simple risk score for predicting severe acute kidney injury after intravenous cisplatin: cohort study",
                "source": "BMJ. 2024;384:e077169",
                "authors": "Gupta S, et al."
              },
              "max_score": 22.5,
              "components": [
                {
                  "value": 40,
                  "factor": "age",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "hypertension",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "diabetes",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "current_or_former_smoker",
                  "points": 0,
                  "present": false
                },
                {
                  "value": 130,
                  "factor": "hemoglobin",
                  "points": 0,
                  "present": false
                },
                {
                  "value": 8,
                  "factor": "wbc",
                  "points": 0,
                  "present": false
                },
                {
                  "value": 42,
                  "factor": "albumin",
                  "points": 0,
                  "present": false
                },
                {
                  "value": 0.9,
                  "factor": "magnesium",
                  "points": 0,
                  "present": false
                },
                {
                  "value": 50,
                  "factor": "cisplatin_dose",
                  "points": 0,
                  "present": false
                }
              ],
              "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.",
              "risk_group": "low",
              "wbc_10e9_l": 8,
              "albumin_g_l": 42,
              "hemoglobin_g_l": 130,
              "magnesium_mmol_l": 0.9,
              "cisplatin_dose_mg": 50,
              "formula_expression": "CP-AKI simple = age (≤45 0; 46-60 2.5; 61-70 3.5; >70 4.5) + hypertension 1 + diabetes 1 + current_or_former_smoker 1 + hemoglobin_g_l (≥120 0; 110-119 1; <110 1.5) + wbc_10e9_l (≤12.0 0; >12.0 1.5) + albumin_g_l (>38 0; 33-38 1; <33 1.5) + magnesium_mmol_l (≥0.82 0; <0.82 1) + cisplatin_dose_mg (≤50 0; 51-75 2; 76-100 2.5; 101-125 3; 126-150 5; 151-200 7.5; >200 9.5); Gupta 2024 Figure 2 odds-ratio points; max 22.5; no creatinine; no platelets; low 0-5.5 / moderate 6-9.5 / high 10-15.5 / very_high ≥16"
            }
          ]
        }
      },
      "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",
                      "hypertension",
                      "diabetes",
                      "current_or_former_smoker",
                      "magnesium_mmol_l",
                      "cisplatin_dose_mg"
                    ],
                    "properties": {
                      "age": {
                        "type": "integer",
                        "description": "Age in years (integer 18-120). Gupta 2024 Figure 2: ≤45 scores 0; 46-60 scores 2.5; 61-70 scores 3.5; >70 scores 4.5."
                      },
                      "wbc_ul": {
                        "type": "number",
                        "description": "White blood cell count per µL (10-500000). Converted as wbc_10e9_l = wbc_ul / 1000. Provide this or wbc_k_ul, not both."
                      },
                      "diabetes": {
                        "type": "boolean",
                        "description": "Caller-assigned diabetes mellitus (Gupta 2024 Figure 2). true scores 1. magent does not diagnose diabetes."
                      },
                      "wbc_k_ul": {
                        "type": "number",
                        "description": "White blood cell count in 10^9/L (0.01-500), same as k/µL. Provide this or wbc_ul, not both. ≤12.0 scores 0; >12.0 scores 1.5 (Gupta 2024 Figure 2). magent does not assay WBC."
                      },
                      "albumin_g_l": {
                        "type": "number",
                        "description": "Serum albumin in g/L (10-60), Gupta 2024 units. Provide this or albumin_g_dl, not both. >38 scores 0; 33-38 scores 1; <33 scores 1.5. magent does not assay albumin."
                      },
                      "albumin_g_dl": {
                        "type": "number",
                        "description": "Serum albumin in g/dL (1-6). Converted as albumin_g_l = albumin_g_dl × 10. Provide this or albumin_g_l, not both."
                      },
                      "hypertension": {
                        "type": "boolean",
                        "description": "Caller-assigned hypertension (Gupta 2024 Figure 2). true scores 1. magent does not diagnose hypertension."
                      },
                      "hemoglobin_g_l": {
                        "type": "number",
                        "description": "Hemoglobin in g/L (30-220), Gupta 2024 units. Provide this or hemoglobin_g_dl, not both. ≥120 scores 0; 110-119 scores 1; <110 scores 1.5. magent does not assay hemoglobin."
                      },
                      "hemoglobin_g_dl": {
                        "type": "number",
                        "description": "Hemoglobin in g/dL (3-22). Converted as hemoglobin_g_l = hemoglobin_g_dl × 10. Provide this or hemoglobin_g_l, not both."
                      },
                      "magnesium_mmol_l": {
                        "type": "number",
                        "description": "Serum magnesium in mmol/L (0.2-2.5), Gupta 2024 units. ≥0.82 scores 0; <0.82 scores 1. magent does not assay magnesium."
                      },
                      "cisplatin_dose_mg": {
                        "type": "number",
                        "description": "First intravenous cisplatin dose in mg (1-500), Gupta 2024 Figure 2. ≤50 scores 0; 51-75 scores 2; 76-100 scores 2.5; 101-125 scores 3; 126-150 scores 5; 151-200 scores 7.5; >200 scores 9.5. magent does not dose cisplatin."
                      },
                      "current_or_former_smoker": {
                        "type": "boolean",
                        "description": "Caller-assigned current or former smoker (Gupta 2024 Figure 2 simple score; BMJ 2024;385:q1207). true scores 1. magent does not take a smoking history."
                      }
                    }
                  },
                  "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
2026-09-02 05:28Z
Last indexed by Roundhouse
2026-09-07 06:20Z
Last enriched (probe, favicon, geo)
2026-09-10 21:15Z
x402 version
2
Max timeout
600s
Liveness probe
HTTP 0
Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 7 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service magent and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=magent'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://api.magentlab.com/api/calc/cp_aki, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.