Roundhouse AI

magent

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

Otherofflineeip155:8453Exactvia cdp
https://api.magentlab.com/api/calc/irae_pneumonitis
IraePneumonitisAscoCheckpointRespiratory
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 8 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 03:01Z
—
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/irae_pneumonitis",
        "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/irae_pneumonitis",
    "tags": [
      "irae",
      "pneumonitis",
      "asco",
      "checkpoint",
      "respiratory"
    ],
    "mimeType": "application/json",
    "description": "Brahmer 2018 ASCO Table 3.1 irAE pneumonitis. First-match: G4 life-threatening respiratory compromise; else G3 hospitalization, oxygen, limiting self-care, or all lobes/>50%; else G2 symptomatic, >1 lobe, 25-50% parenchyma, or limiting instrumental ADL; else G1. ICPi: hold_if_radiographic_progression (G1), hold (G2), permanently_discontinue (G3-4). Caller-assigned flags. magent does not read CT or pulse oximetry. Not SITC 2021, not a CTCAE instrument, not a diagnosis, not a steroid dose.",
    "serviceName": "magent"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "symptomatic": false,
            "oxygen_indicated": false,
            "limiting_self_care": false,
            "more_than_one_lobe": false,
            "extent_25_to_50_pct": false,
            "all_lobes_or_gt_50_pct": false,
            "hospitalization_required": false,
            "limiting_instrumental_adl": false,
            "life_threatening_respiratory": false
          }
        },
        "output": {
          "type": "json",
          "example": {
            "grade": 1,
            "formula": "irae_pneumonitis",
            "citation": {
              "id": "brahmer-2018",
              "doi": "10.1200/JCO.2017.77.6385",
              "pmid": "29442540",
              "title": "Management of Immune-Related Adverse Events in Patients Treated With Immune Checkpoint Inhibitor Therapy: American Society of Clinical Oncology Clinical Practice Guideline",
              "source": "J Clin Oncol. 2018;36(17):1714-1768",
              "authors": "Brahmer JR, Lacchetti C, Schneider BJ, Atkins MB, Brassil KJ, Caterino JM, Chau I, Ernstoff MS, Gardner JM, Ginex P, Hallmeyer S, Holter Chakrabarty J, Leighl NB, Mammen JS, McDermott DF, Naing A, Nastoupil LJ, Phillips T, Porter LD, Puzanov I, Reichner CA, Santomasso BD, Seigel C, Spira A, Suarez-Almazor ME, Wang Y, Weber JS, Wolchok JD, Thompson JA"
            },
            "criteria": [
              {
                "met": false,
                "factor": "life_threatening_respiratory"
              },
              {
                "met": false,
                "factor": "hospitalization_required"
              },
              {
                "met": false,
                "factor": "oxygen_indicated"
              },
              {
                "met": false,
                "factor": "limiting_self_care"
              },
              {
                "met": false,
                "factor": "all_lobes_or_gt_50_pct"
              },
              {
                "met": false,
                "factor": "symptomatic"
              },
              {
                "met": false,
                "factor": "more_than_one_lobe"
              },
              {
                "met": false,
                "factor": "extent_25_to_50_pct"
              },
              {
                "met": false,
                "factor": "limiting_instrumental_adl"
              }
            ],
            "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.",
            "icpi_action": "hold_if_radiographic_progression",
            "symptomatic": false,
            "oxygen_indicated": false,
            "formula_expression": "irae_pneumonitis first-match worst-wins (Brahmer 2018 Table 3.1): grade 4 if life_threatening_respiratory; else grade 3 if hospitalization_required or oxygen_indicated or limiting_self_care or all_lobes_or_gt_50_pct; else grade 2 if symptomatic or more_than_one_lobe or extent_25_to_50_pct or limiting_instrumental_adl; else grade 1. icpi_action hold_if_radiographic_progression (grade 1), hold (grade 2), permanently_discontinue (grade 3 or 4). magent does not read CT or pulse oximetry. Not SITC 2021. Not CTCAE pneumonitis as a separate instrument. Not a diagnosis. Not a steroid dose",
            "limiting_self_care": false,
            "more_than_one_lobe": false,
            "extent_25_to_50_pct": false,
            "all_lobes_or_gt_50_pct": false,
            "hospitalization_required": false,
            "limiting_instrumental_adl": false,
            "life_threatening_respiratory": false
          }
        },
        "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": [
                  "life_threatening_respiratory",
                  "hospitalization_required",
                  "oxygen_indicated",
                  "limiting_self_care",
                  "all_lobes_or_gt_50_pct",
                  "symptomatic",
                  "more_than_one_lobe",
                  "extent_25_to_50_pct",
                  "limiting_instrumental_adl"
                ],
                "properties": {
                  "symptomatic": {
                    "type": "boolean",
                    "description": "Symptomatic as assigned by the caller (Brahmer 2018 Table 3.1 grade 2). true or false. magent does not examine the patient."
                  },
                  "oxygen_indicated": {
                    "type": "boolean",
                    "description": "Oxygen indicated as assigned by the caller (Brahmer 2018 Table 3.1 grade 3). true or false. magent does not read pulse oximetry or start oxygen."
                  },
                  "limiting_self_care": {
                    "type": "boolean",
                    "description": "Limiting self-care ADL as assigned by the caller (Brahmer 2018 Table 3.1 grade 3). true or false. magent does not assess ADL."
                  },
                  "more_than_one_lobe": {
                    "type": "boolean",
                    "description": "Involves more than one lobe as assigned by the caller (Brahmer 2018 Table 3.1 grade 2). true or false. magent does not read CT."
                  },
                  "extent_25_to_50_pct": {
                    "type": "boolean",
                    "description": "Involves 25%–50% of lung parenchyma as assigned by the caller (Brahmer 2018 Table 3.1 grade 2). true or false. magent does not read CT."
                  },
                  "all_lobes_or_gt_50_pct": {
                    "type": "boolean",
                    "description": "Involves all lung lobes or >50% of lung parenchyma as assigned by the caller (Brahmer 2018 Table 3.1 grade 3). true or false. magent does not read CT."
                  },
                  "hospitalization_required": {
                    "type": "boolean",
                    "description": "Hospitalization required as assigned by the caller (Brahmer 2018 Table 3.1 grade 3). true or false. magent does not decide admission."
                  },
                  "limiting_instrumental_adl": {
                    "type": "boolean",
                    "description": "Limiting instrumental ADL as assigned by the caller (Brahmer 2018 Table 3.1 grade 2). true or false. magent does not assess ADL."
                  },
                  "life_threatening_respiratory": {
                    "type": "boolean",
                    "description": "Life-threatening respiratory compromise with urgent intervention indicated (intubation) as assigned by the caller (Brahmer 2018 Table 3.1 grade 4). true or false. When true, grade is 4 regardless of other flags. magent does not examine the patient or set a ventilator."
                  }
                }
              }
            },
            "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.

Paid to
0x836B…19Ee2
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/irae_pneumonitis",
      "assetTransferMethod": "eip3009"
    },
    "payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 600
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "items": [
            {
              "symptomatic": false,
              "oxygen_indicated": false,
              "limiting_self_care": false,
              "more_than_one_lobe": false,
              "extent_25_to_50_pct": false,
              "all_lobes_or_gt_50_pct": false,
              "hospitalization_required": false,
              "limiting_instrumental_adl": false,
              "life_threatening_respiratory": false
            },
            {
              "symptomatic": false,
              "oxygen_indicated": false,
              "limiting_self_care": false,
              "more_than_one_lobe": false,
              "extent_25_to_50_pct": false,
              "all_lobes_or_gt_50_pct": false,
              "hospitalization_required": false,
              "limiting_instrumental_adl": false,
              "life_threatening_respiratory": false
            }
          ]
        },
        "type": "http",
        "method": "POST"
      },
      "output": {
        "type": "json",
        "example": {
          "path": "/api/calc/irae_pneumonitis",
          "count": 2,
          "items": [
            {
              "grade": 1,
              "formula": "irae_pneumonitis",
              "citation": {
                "id": "brahmer-2018",
                "doi": "10.1200/JCO.2017.77.6385",
                "pmid": "29442540",
                "title": "Management of Immune-Related Adverse Events in Patients Treated With Immune Checkpoint Inhibitor Therapy: American Society of Clinical Oncology Clinical Practice Guideline",
                "source": "J Clin Oncol. 2018;36(17):1714-1768",
                "authors": "Brahmer JR, Lacchetti C, Schneider BJ, Atkins MB, Brassil KJ, Caterino JM, Chau I, Ernstoff MS, Gardner JM, Ginex P, Hallmeyer S, Holter Chakrabarty J, Leighl NB, Mammen JS, McDermott DF, Naing A, Nastoupil LJ, Phillips T, Porter LD, Puzanov I, Reichner CA, Santomasso BD, Seigel C, Spira A, Suarez-Almazor ME, Wang Y, Weber JS, Wolchok JD, Thompson JA"
              },
              "criteria": [
                {
                  "met": false,
                  "factor": "life_threatening_respiratory"
                },
                {
                  "met": false,
                  "factor": "hospitalization_required"
                },
                {
                  "met": false,
                  "factor": "oxygen_indicated"
                },
                {
                  "met": false,
                  "factor": "limiting_self_care"
                },
                {
                  "met": false,
                  "factor": "all_lobes_or_gt_50_pct"
                },
                {
                  "met": false,
                  "factor": "symptomatic"
                },
                {
                  "met": false,
                  "factor": "more_than_one_lobe"
                },
                {
                  "met": false,
                  "factor": "extent_25_to_50_pct"
                },
                {
                  "met": false,
                  "factor": "limiting_instrumental_adl"
                }
              ],
              "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.",
              "icpi_action": "hold_if_radiographic_progression",
              "symptomatic": false,
              "oxygen_indicated": false,
              "formula_expression": "irae_pneumonitis first-match worst-wins (Brahmer 2018 Table 3.1): grade 4 if life_threatening_respiratory; else grade 3 if hospitalization_required or oxygen_indicated or limiting_self_care or all_lobes_or_gt_50_pct; else grade 2 if symptomatic or more_than_one_lobe or extent_25_to_50_pct or limiting_instrumental_adl; else grade 1. icpi_action hold_if_radiographic_progression (grade 1), hold (grade 2), permanently_discontinue (grade 3 or 4). magent does not read CT or pulse oximetry. Not SITC 2021. Not CTCAE pneumonitis as a separate instrument. Not a diagnosis. Not a steroid dose",
              "limiting_self_care": false,
              "more_than_one_lobe": false,
              "extent_25_to_50_pct": false,
              "all_lobes_or_gt_50_pct": false,
              "hospitalization_required": false,
              "limiting_instrumental_adl": false,
              "life_threatening_respiratory": false
            },
            {
              "grade": 1,
              "formula": "irae_pneumonitis",
              "citation": {
                "id": "brahmer-2018",
                "doi": "10.1200/JCO.2017.77.6385",
                "pmid": "29442540",
                "title": "Management of Immune-Related Adverse Events in Patients Treated With Immune Checkpoint Inhibitor Therapy: American Society of Clinical Oncology Clinical Practice Guideline",
                "source": "J Clin Oncol. 2018;36(17):1714-1768",
                "authors": "Brahmer JR, Lacchetti C, Schneider BJ, Atkins MB, Brassil KJ, Caterino JM, Chau I, Ernstoff MS, Gardner JM, Ginex P, Hallmeyer S, Holter Chakrabarty J, Leighl NB, Mammen JS, McDermott DF, Naing A, Nastoupil LJ, Phillips T, Porter LD, Puzanov I, Reichner CA, Santomasso BD, Seigel C, Spira A, Suarez-Almazor ME, Wang Y, Weber JS, Wolchok JD, Thompson JA"
              },
              "criteria": [
                {
                  "met": false,
                  "factor": "life_threatening_respiratory"
                },
                {
                  "met": false,
                  "factor": "hospitalization_required"
                },
                {
                  "met": false,
                  "factor": "oxygen_indicated"
                },
                {
                  "met": false,
                  "factor": "limiting_self_care"
                },
                {
                  "met": false,
                  "factor": "all_lobes_or_gt_50_pct"
                },
                {
                  "met": false,
                  "factor": "symptomatic"
                },
                {
                  "met": false,
                  "factor": "more_than_one_lobe"
                },
                {
                  "met": false,
                  "factor": "extent_25_to_50_pct"
                },
                {
                  "met": false,
                  "factor": "limiting_instrumental_adl"
                }
              ],
              "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.",
              "icpi_action": "hold_if_radiographic_progression",
              "symptomatic": false,
              "oxygen_indicated": false,
              "formula_expression": "irae_pneumonitis first-match worst-wins (Brahmer 2018 Table 3.1): grade 4 if life_threatening_respiratory; else grade 3 if hospitalization_required or oxygen_indicated or limiting_self_care or all_lobes_or_gt_50_pct; else grade 2 if symptomatic or more_than_one_lobe or extent_25_to_50_pct or limiting_instrumental_adl; else grade 1. icpi_action hold_if_radiographic_progression (grade 1), hold (grade 2), permanently_discontinue (grade 3 or 4). magent does not read CT or pulse oximetry. Not SITC 2021. Not CTCAE pneumonitis as a separate instrument. Not a diagnosis. Not a steroid dose",
              "limiting_self_care": false,
              "more_than_one_lobe": false,
              "extent_25_to_50_pct": false,
              "all_lobes_or_gt_50_pct": false,
              "hospitalization_required": false,
              "limiting_instrumental_adl": false,
              "life_threatening_respiratory": false
            }
          ]
        }
      },
      "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": [
                      "life_threatening_respiratory",
                      "hospitalization_required",
                      "oxygen_indicated",
                      "limiting_self_care",
                      "all_lobes_or_gt_50_pct",
                      "symptomatic",
                      "more_than_one_lobe",
                      "extent_25_to_50_pct",
                      "limiting_instrumental_adl"
                    ],
                    "properties": {
                      "symptomatic": {
                        "type": "boolean",
                        "description": "Symptomatic as assigned by the caller (Brahmer 2018 Table 3.1 grade 2). true or false. magent does not examine the patient."
                      },
                      "oxygen_indicated": {
                        "type": "boolean",
                        "description": "Oxygen indicated as assigned by the caller (Brahmer 2018 Table 3.1 grade 3). true or false. magent does not read pulse oximetry or start oxygen."
                      },
                      "limiting_self_care": {
                        "type": "boolean",
                        "description": "Limiting self-care ADL as assigned by the caller (Brahmer 2018 Table 3.1 grade 3). true or false. magent does not assess ADL."
                      },
                      "more_than_one_lobe": {
                        "type": "boolean",
                        "description": "Involves more than one lobe as assigned by the caller (Brahmer 2018 Table 3.1 grade 2). true or false. magent does not read CT."
                      },
                      "extent_25_to_50_pct": {
                        "type": "boolean",
                        "description": "Involves 25%–50% of lung parenchyma as assigned by the caller (Brahmer 2018 Table 3.1 grade 2). true or false. magent does not read CT."
                      },
                      "all_lobes_or_gt_50_pct": {
                        "type": "boolean",
                        "description": "Involves all lung lobes or >50% of lung parenchyma as assigned by the caller (Brahmer 2018 Table 3.1 grade 3). true or false. magent does not read CT."
                      },
                      "hospitalization_required": {
                        "type": "boolean",
                        "description": "Hospitalization required as assigned by the caller (Brahmer 2018 Table 3.1 grade 3). true or false. magent does not decide admission."
                      },
                      "limiting_instrumental_adl": {
                        "type": "boolean",
                        "description": "Limiting instrumental ADL as assigned by the caller (Brahmer 2018 Table 3.1 grade 2). true or false. magent does not assess ADL."
                      },
                      "life_threatening_respiratory": {
                        "type": "boolean",
                        "description": "Life-threatening respiratory compromise with urgent intervention indicated (intubation) as assigned by the caller (Brahmer 2018 Table 3.1 grade 4). true or false. When true, grade is 4 regardless of other flags. magent does not examine the patient or set a ventilator."
                      }
                    }
                  },
                  "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 03:01Z
Last indexed by Roundhouse
2026-09-07 06:20Z
Last enriched (probe, favicon, geo)
2026-09-10 18:45Z
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. 8 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/irae_pneumonitis, 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.