magent

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

Mediaofflineeip155:8453Exactvia cdp
Trip-castVteImmobilizationScoreCalculator
Serves fromUnited StatesAspen, Colorado · United States66.241.125.93
Calls · 30d
2→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 13 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.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-31 13:19Z
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.

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    "tags": [
      "trip-cast",
      "vte",
      "immobilization",
      "score",
      "calculator"
    ],
    "mimeType": "application/json",
    "description": "Nemeth 2020 TRiP(cast) VTE risk after lower-limb trauma immobilization. Caller-assigned Table 1 trauma (high 3, intermediate 2, low 1) and immobilization (upper_leg 3, lower_leg 2, foot_cast 1, other_plantar 0) plus age, sex, BMI, and nine flags. Max 34. High-risk at score >=7. Not a diagnosis or thromboprophylaxis order. magent does not classify the radiograph.",
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            "bmi_kg_m2": 30,
            "comorbidity": false,
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            "cancer_within_5y": false,
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            "surgery_within_3mo": false,
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            "other_immobilization_3mo": false,
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              {
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              },
              {
                "factor": "cancer_within_5y",
                "points": 0,
                "present": false
              },
              {
                "factor": "pregnancy_or_puerperium",
                "points": 0,
                "present": false
              },
              {
                "factor": "other_immobilization_3mo",
                "points": 0,
                "present": false
              },
              {
                "factor": "surgery_within_3mo",
                "points": 0,
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              {
                "factor": "comorbidity",
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            ],
            "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.",
            "immobilization": "lower_leg",
            "formula_expression": "TRiP(cast) = trauma (high 3, intermediate 2, low 1) + immobilization (upper_leg 3, lower_leg 2, foot_cast 1, other_plantar 0) + age (<35: 0, 35-54: 1, 55-74: 2, >=75: 3) + male (1) + BMI (>=35: 2, >=25 and <35: 1, <25: 0) + family_history_vte (2) + personal_history_vte_or_major_thrombophilia (4) + hormonal_estrogenic_treatment (4) + cancer_within_5y (3) + pregnancy_or_puerperium (3) + other_immobilization_3mo (2) + surgery_within_3mo (2) + comorbidity (1) + chronic_venous_insufficiency (1); Nemeth 2020 Table 1; max 34; high_risk iff score >= 7"
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            "properties": {
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                "const": "http"
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              "method": {
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                  "HEAD",
                  "DELETE"
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                "type": "string"
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              "headers": {
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                "additionalProperties": {
                  "type": "string"
                }
              },
              "queryParams": {
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                  "immobilization",
                  "age",
                  "sex",
                  "bmi_kg_m2",
                  "family_history_vte",
                  "personal_history_vte_or_major_thrombophilia",
                  "hormonal_estrogenic_treatment",
                  "cancer_within_5y",
                  "pregnancy_or_puerperium",
                  "other_immobilization_3mo",
                  "surgery_within_3mo",
                  "comorbidity",
                  "chronic_venous_insufficiency"
                ],
                "properties": {
                  "age": {
                    "type": "integer",
                    "description": "Age in years (integer 1-120). Nemeth 2020: <35 scores 0; ≥35 and <55 scores 1; ≥55 and <75 scores 2; ≥75 scores 3. Age 35 scores 1; 55 scores 2; 75 scores 3."
                  },
                  "sex": {
                    "enum": [
                      "female",
                      "male"
                    ],
                    "type": "string",
                    "description": "female or male. Male scores 1; female scores 0 (Nemeth 2020 Table 1)."
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                  "trauma": {
                    "enum": [
                      "high",
                      "intermediate",
                      "low"
                    ],
                    "type": "string",
                    "description": "Mutually exclusive Nemeth 2020 Table 1 trauma category as assigned by the caller (choose the most severe). high scores 3 (paper examples: fibula/tibia shaft, tibial plateau, Achilles rupture). intermediate scores 2 (bi/tri-malleolar ankle, patellar fracture, ankle dislocation/Lisfranc, severe knee sprain with edema/haemarthrosis, grade 3 ankle sprain). low scores 1 (single malleolar, patellar dislocation, (meta)tarsal/forefoot fracture, grade 1-2 sprain, significant muscle injury). magent does not classify the trauma radiograph."
                  },
                  "bmi_kg_m2": {
                    "type": "number",
                    "description": "Body-mass index in kg/m^2 (10-80). Caller-supplied; magent does not compute BMI from height and weight. Nemeth 2020: <25 scores 0; ≥25 and <35 scores 1; ≥35 scores 2. 25.0 scores 1; 35.0 scores 2."
                  },
                  "comorbidity": {
                    "type": "boolean",
                    "description": "Heart failure, rheumatoid arthritis, CKD, COPD, or IBD as one caller-assigned flag (Nemeth 2020 Table 1). true scores 1. magent does not examine the patient."
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                      "lower_leg",
                      "foot_cast",
                      "other_plantar"
                    ],
                    "type": "string",
                    "description": "Mutually exclusive Nemeth 2020 Table 1 immobilization category as assigned by the caller. upper_leg scores 3. lower_leg scores 2. foot_cast scores 1 (foot cast ankle-free or any semi-rigid without plantar support). other_plantar scores 0 (other cast or bracing with plantar support)."
                  },
                  "cancer_within_5y": {
                    "type": "boolean",
                    "description": "Cancer within 5 years as assigned by the caller (Nemeth 2020 Table 1). true scores 3. magent does not diagnose cancer."
                  },
                  "family_history_vte": {
                    "type": "boolean",
                    "description": "First-degree family history of VTE as assigned by the caller (Nemeth 2020 Table 1). true scores 2. magent does not take a family history."
                  },
                  "surgery_within_3mo": {
                    "type": "boolean",
                    "description": "Surgery within 3 months as assigned by the caller (Nemeth 2020 Table 1). true scores 2. magent does not classify an operation."
                  },
                  "pregnancy_or_puerperium": {
                    "type": "boolean",
                    "description": "Pregnancy or puerperium as assigned by the caller (Nemeth 2020 Table 1). true scores 3. magent does not confirm pregnancy."
                  },
                  "other_immobilization_3mo": {
                    "type": "boolean",
                    "description": "Hospital admission, bedridden, flight >6 h, or lower-limb paralysis other than the cast, within 3 months, as assigned by the caller (Nemeth 2020 Table 1). true scores 2. Independent of the exclusive immobilization category."
                  },
                  "chronic_venous_insufficiency": {
                    "type": "boolean",
                    "description": "Chronic venous insufficiency (varicose veins) as assigned by the caller (Nemeth 2020 Table 1). true scores 1. magent does not examine the patient."
                  },
                  "hormonal_estrogenic_treatment": {
                    "type": "boolean",
                    "description": "Current oral contraceptives or estrogenic hormone therapy as assigned by the caller (Nemeth 2020 Table 1). true scores 4."
                  },
                  "personal_history_vte_or_major_thrombophilia": {
                    "type": "boolean",
                    "description": "Personal history of VTE or major thrombophilia as assigned by the caller (Nemeth 2020 Table 1). true scores 4. magent does not diagnose VTE or interpret a thrombophilia panel."
                  }
                }
              }
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          "output": {
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              "example": {
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  "x402Version": 2
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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
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Extensions

{
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              "sex": "male",
              "trauma": "intermediate",
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              "immobilization": "lower_leg",
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              "chronic_venous_insufficiency": false,
              "hormonal_estrogenic_treatment": false,
              "personal_history_vte_or_major_thrombophilia": false
            }
          ]
        },
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      "output": {
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          "count": 2,
          "items": [
            {
              "sex": "male",
              "score": 7,
              "trauma": "intermediate",
              "formula": "trip_cast",
              "citation": {
                "id": "nemeth-2020",
                "doi": "10.1016/j.eclinm.2020.100270",
                "pmid": "32300734",
                "title": "Clinical risk assessment model to predict venous thromboembolism risk after immobilization for lower-limb trauma",
                "source": "EClinicalMedicine. 2020;20:100270",
                "authors": "Nemeth B, Douillet D, le Cessie S, Penaloza A, Moumneh T, Roy PM, Cannegieter S"
              },
              "age_years": 50,
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              "max_score": 34,
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                  "points": 2,
                  "present": true
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                  "present": true
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                {
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                {
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                },
                {
                  "factor": "hormonal_estrogenic_treatment",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "cancer_within_5y",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "pregnancy_or_puerperium",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "other_immobilization_3mo",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "surgery_within_3mo",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "comorbidity",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "chronic_venous_insufficiency",
                  "points": 0,
                  "present": false
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              ],
              "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.",
              "immobilization": "lower_leg",
              "formula_expression": "TRiP(cast) = trauma (high 3, intermediate 2, low 1) + immobilization (upper_leg 3, lower_leg 2, foot_cast 1, other_plantar 0) + age (<35: 0, 35-54: 1, 55-74: 2, >=75: 3) + male (1) + BMI (>=35: 2, >=25 and <35: 1, <25: 0) + family_history_vte (2) + personal_history_vte_or_major_thrombophilia (4) + hormonal_estrogenic_treatment (4) + cancer_within_5y (3) + pregnancy_or_puerperium (3) + other_immobilization_3mo (2) + surgery_within_3mo (2) + comorbidity (1) + chronic_venous_insufficiency (1); Nemeth 2020 Table 1; max 34; high_risk iff score >= 7"
            },
            {
              "sex": "male",
              "score": 7,
              "trauma": "intermediate",
              "formula": "trip_cast",
              "citation": {
                "id": "nemeth-2020",
                "doi": "10.1016/j.eclinm.2020.100270",
                "pmid": "32300734",
                "title": "Clinical risk assessment model to predict venous thromboembolism risk after immobilization for lower-limb trauma",
                "source": "EClinicalMedicine. 2020;20:100270",
                "authors": "Nemeth B, Douillet D, le Cessie S, Penaloza A, Moumneh T, Roy PM, Cannegieter S"
              },
              "age_years": 50,
              "bmi_kg_m2": 30,
              "high_risk": true,
              "max_score": 34,
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              "components": [
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                  "factor": "trauma",
                  "points": 2,
                  "present": true
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                  "factor": "immobilization",
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                },
                {
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                  "factor": "age",
                  "points": 1,
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                {
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                },
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                  "factor": "family_history_vte",
                  "points": 0,
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                  "factor": "personal_history_vte_or_major_thrombophilia",
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                },
                {
                  "factor": "hormonal_estrogenic_treatment",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "cancer_within_5y",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "pregnancy_or_puerperium",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "other_immobilization_3mo",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "surgery_within_3mo",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "comorbidity",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "chronic_venous_insufficiency",
                  "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.",
              "immobilization": "lower_leg",
              "formula_expression": "TRiP(cast) = trauma (high 3, intermediate 2, low 1) + immobilization (upper_leg 3, lower_leg 2, foot_cast 1, other_plantar 0) + age (<35: 0, 35-54: 1, 55-74: 2, >=75: 3) + male (1) + BMI (>=35: 2, >=25 and <35: 1, <25: 0) + family_history_vte (2) + personal_history_vte_or_major_thrombophilia (4) + hormonal_estrogenic_treatment (4) + cancer_within_5y (3) + pregnancy_or_puerperium (3) + other_immobilization_3mo (2) + surgery_within_3mo (2) + comorbidity (1) + chronic_venous_insufficiency (1); Nemeth 2020 Table 1; max 34; high_risk iff score >= 7"
            }
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        }
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      "iconUrl": "https://api.magentlab.com/favicon.ico"
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    "schema": {
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      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
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      "properties": {
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          "type": "object",
          "required": [
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            "method"
          ],
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "items"
              ],
              "properties": {
                "items": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "trauma",
                      "immobilization",
                      "age",
                      "sex",
                      "bmi_kg_m2",
                      "family_history_vte",
                      "personal_history_vte_or_major_thrombophilia",
                      "hormonal_estrogenic_treatment",
                      "cancer_within_5y",
                      "pregnancy_or_puerperium",
                      "other_immobilization_3mo",
                      "surgery_within_3mo",
                      "comorbidity",
                      "chronic_venous_insufficiency"
                    ],
                    "properties": {
                      "age": {
                        "type": "integer",
                        "description": "Age in years (integer 1-120). Nemeth 2020: <35 scores 0; ≥35 and <55 scores 1; ≥55 and <75 scores 2; ≥75 scores 3. Age 35 scores 1; 55 scores 2; 75 scores 3."
                      },
                      "sex": {
                        "enum": [
                          "female",
                          "male"
                        ],
                        "type": "string",
                        "description": "female or male. Male scores 1; female scores 0 (Nemeth 2020 Table 1)."
                      },
                      "trauma": {
                        "enum": [
                          "high",
                          "intermediate",
                          "low"
                        ],
                        "type": "string",
                        "description": "Mutually exclusive Nemeth 2020 Table 1 trauma category as assigned by the caller (choose the most severe). high scores 3 (paper examples: fibula/tibia shaft, tibial plateau, Achilles rupture). intermediate scores 2 (bi/tri-malleolar ankle, patellar fracture, ankle dislocation/Lisfranc, severe knee sprain with edema/haemarthrosis, grade 3 ankle sprain). low scores 1 (single malleolar, patellar dislocation, (meta)tarsal/forefoot fracture, grade 1-2 sprain, significant muscle injury). magent does not classify the trauma radiograph."
                      },
                      "bmi_kg_m2": {
                        "type": "number",
                        "description": "Body-mass index in kg/m^2 (10-80). Caller-supplied; magent does not compute BMI from height and weight. Nemeth 2020: <25 scores 0; ≥25 and <35 scores 1; ≥35 scores 2. 25.0 scores 1; 35.0 scores 2."
                      },
                      "comorbidity": {
                        "type": "boolean",
                        "description": "Heart failure, rheumatoid arthritis, CKD, COPD, or IBD as one caller-assigned flag (Nemeth 2020 Table 1). true scores 1. magent does not examine the patient."
                      },
                      "immobilization": {
                        "enum": [
                          "upper_leg",
                          "lower_leg",
                          "foot_cast",
                          "other_plantar"
                        ],
                        "type": "string",
                        "description": "Mutually exclusive Nemeth 2020 Table 1 immobilization category as assigned by the caller. upper_leg scores 3. lower_leg scores 2. foot_cast scores 1 (foot cast ankle-free or any semi-rigid without plantar support). other_plantar scores 0 (other cast or bracing with plantar support)."
                      },
                      "cancer_within_5y": {
                        "type": "boolean",
                        "description": "Cancer within 5 years as assigned by the caller (Nemeth 2020 Table 1). true scores 3. magent does not diagnose cancer."
                      },
                      "family_history_vte": {
                        "type": "boolean",
                        "description": "First-degree family history of VTE as assigned by the caller (Nemeth 2020 Table 1). true scores 2. magent does not take a family history."
                      },
                      "surgery_within_3mo": {
                        "type": "boolean",
                        "description": "Surgery within 3 months as assigned by the caller (Nemeth 2020 Table 1). true scores 2. magent does not classify an operation."
                      },
                      "pregnancy_or_puerperium": {
                        "type": "boolean",
                        "description": "Pregnancy or puerperium as assigned by the caller (Nemeth 2020 Table 1). true scores 3. magent does not confirm pregnancy."
                      },
                      "other_immobilization_3mo": {
                        "type": "boolean",
                        "description": "Hospital admission, bedridden, flight >6 h, or lower-limb paralysis other than the cast, within 3 months, as assigned by the caller (Nemeth 2020 Table 1). true scores 2. Independent of the exclusive immobilization category."
                      },
                      "chronic_venous_insufficiency": {
                        "type": "boolean",
                        "description": "Chronic venous insufficiency (varicose veins) as assigned by the caller (Nemeth 2020 Table 1). true scores 1. magent does not examine the patient."
                      },
                      "hormonal_estrogenic_treatment": {
                        "type": "boolean",
                        "description": "Current oral contraceptives or estrogenic hormone therapy as assigned by the caller (Nemeth 2020 Table 1). true scores 4."
                      },
                      "personal_history_vte_or_major_thrombophilia": {
                        "type": "boolean",
                        "description": "Personal history of VTE or major thrombophilia as assigned by the caller (Nemeth 2020 Table 1). true scores 4. magent does not diagnose VTE or interpret a thrombophilia panel."
                      }
                    }
                  },
                  "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
2026-08-31 13:19Z
Last indexed by Roundhouse
2026-09-07 06:20Z
Last enriched (probe, favicon, geo)
2026-09-12 23:15Z
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. 13 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/trip_cast, 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.