magent

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

DataLiveeip155:8453Exactvia cdp
HepHitHeparinThrombocytopeniaCalculator
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 10 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 2026-08-31 13:42Z
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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    "description": "Cuker 2010 HEP score: eight features with signed weights (range -16 to 19). Magnitude of platelet fall, typical- or rapid-onset timing, nadir, thrombosis (at most one), SQ heparin skin necrosis, IV-bolus systemic reaction, bleeding, and other causes (select all; no other cause +3). Cutoff 2 was 100% sensitive / 60% specific vs the expert panel. Not a HIT diagnosis or 4Ts score. magent does not assay SRA or ELISA.",
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                "points": 0,
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              },
              {
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                "points": 0,
                "present": false
              },
              {
                "factor": "cpb_96h",
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                "present": false
              },
              {
                "factor": "no_other_cause",
                "points": 3,
                "present": true
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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.",
            "score_ge_2": true,
            "score_ge_5": true,
            "formula_expression": "HEP = magnitude (lt_30 -1, 30_to_50 1, gt_50 3) + timing (typical_lt_4 -2, typical_day_4 2, typical_5_10 3, typical_11_14 2, typical_gt_14 -1; rapid_lt_48h 2, rapid_gt_48h -1) + nadir (le_20 -2, gt_20 2) + thrombosis select at most one (none 0; typical_new_ge_4d 3, typical_progression 2; rapid_new 3, rapid_progression 2) + skin_necrosis 3 + systemic_reaction 2 + bleeding -1 + other causes select all (chronic_thrombocytopenia -1, new_drug_thrombocytopenia -2, severe_infection -2, overt_dic -2, intra_arterial_device -2, cpb_96h -1, no_other_cause 3 mutually exclusive with other causes); Cuker 2010; range -16 to 19; cutoff 2 was 100% sensitive / 60% specific vs expert panel; cutoff 5 was 86% sensitive / 88% specific"
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                  "new_drug_thrombocytopenia",
                  "severe_infection",
                  "overt_dic",
                  "intra_arterial_device",
                  "cpb_96h",
                  "no_other_cause"
                ],
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                  "nadir": {
                    "type": "string",
                    "description": "Caller-assigned Cuker 2010 nadir platelet count. le_20 (≤20 ×10^9/L) scores -2; gt_20 (>20 ×10^9/L) scores 2. magent does not take a raw platelet count."
                  },
                  "timing": {
                    "type": "string",
                    "description": "Caller-assigned Cuker 2010 timing. Typical-onset: typical_lt_4 (fall begins <4 days) -2; typical_day_4 (day 4) 2; typical_5_10 (days 5-10) 3; typical_11_14 (days 11-14) 2; typical_gt_14 (>14 days) -1. Rapid-onset after re-exposure within 100 days: rapid_lt_48h (<48 h) 2; rapid_gt_48h (>48 h) -1. magent does not infer day of onset."
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                  "cpb_96h": {
                    "type": "boolean",
                    "description": "Cardiopulmonary bypass within the previous 96 hours (Cuker 2010). true scores -1. Mutually exclusive with no_other_cause true."
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                  "bleeding": {
                    "type": "boolean",
                    "description": "Presence of bleeding, petechiae, or extensive bruising (Cuker 2010). true scores -1; false scores 0."
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                    "type": "string",
                    "description": "Caller-assigned Cuker 2010 magnitude of platelet fall (peak to nadir since heparin exposure). lt_30 (<30%) scores -1; 30_to_50 (30-50%) scores 1; gt_50 (>50%) scores 3. magent does not grade platelet counts."
                  },
                  "overt_dic": {
                    "type": "boolean",
                    "description": "Overt DIC as assigned by the caller (Cuker 2010: fibrinogen <100 mg/dL and D-dimer >5.0 μg/mL). true scores -2. magent does not assay fibrinogen or D-dimer. Mutually exclusive with no_other_cause true."
                  },
                  "thrombosis": {
                    "type": "string",
                    "description": "Caller-assigned Cuker 2010 thrombosis (select at most one). none scores 0. Typical-onset: typical_new_ge_4d (new VTE or ATE ≥4 days after heparin) 3; typical_progression (progression of preexisting VTE or ATE while receiving heparin) 2. Rapid-onset: rapid_new (new VTE or ATE after heparin) 3; rapid_progression 2."
                  },
                  "skin_necrosis": {
                    "type": "boolean",
                    "description": "Skin necrosis at subcutaneous heparin injection sites (Cuker 2010). true scores 3; false scores 0. magent does not examine the skin."
                  },
                  "no_other_cause": {
                    "type": "boolean",
                    "description": "No other apparent cause of thrombocytopenia (Cuker 2010). true scores 3. Must be false if any other-cause flag is true."
                  },
                  "severe_infection": {
                    "type": "boolean",
                    "description": "Severe infection as an other cause of thrombocytopenia (Cuker 2010). true scores -2. Mutually exclusive with no_other_cause true."
                  },
                  "systemic_reaction": {
                    "type": "boolean",
                    "description": "Acute systemic reaction after intravenous heparin bolus (Cuker 2010). true scores 2; false scores 0."
                  },
                  "intra_arterial_device": {
                    "type": "boolean",
                    "description": "Indwelling intra-arterial device (Cuker 2010 examples: IABP, VAD, ECMO). true scores -2. Mutually exclusive with no_other_cause true."
                  },
                  "chronic_thrombocytopenia": {
                    "type": "boolean",
                    "description": "Presence of a chronic thrombocytopenic disorder (Cuker 2010 other causes; select all that apply). true scores -1. Mutually exclusive with no_other_cause true."
                  },
                  "new_drug_thrombocytopenia": {
                    "type": "boolean",
                    "description": "Newly initiated non-heparin medication known to cause thrombocytopenia (Cuker 2010). true scores -2. Mutually exclusive with no_other_cause true."
                  }
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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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              "nadir": "gt_20",
              "timing": "typical_5_10",
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              "intra_arterial_device": false,
              "chronic_thrombocytopenia": false,
              "new_drug_thrombocytopenia": false
            },
            {
              "nadir": "gt_20",
              "timing": "typical_5_10",
              "cpb_96h": false,
              "bleeding": false,
              "magnitude": "gt_50",
              "overt_dic": false,
              "thrombosis": "typical_new_ge_4d",
              "skin_necrosis": false,
              "no_other_cause": true,
              "severe_infection": false,
              "systemic_reaction": false,
              "intra_arterial_device": false,
              "chronic_thrombocytopenia": false,
              "new_drug_thrombocytopenia": false
            }
          ]
        },
        "type": "http",
        "method": "POST"
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      "output": {
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          "path": "/api/calc/hep",
          "count": 2,
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            {
              "score": 14,
              "formula": "hep",
              "citation": {
                "id": "cuker-2010",
                "doi": "10.1111/j.1538-7836.2010.04059.x",
                "pmid": "20854372",
                "title": "The HIT Expert Probability (HEP) Score: a novel pre-test probability model for heparin-induced thrombocytopenia based on broad expert opinion",
                "source": "J Thromb Haemost. 2010;8(12):2642-2650",
                "authors": "Cuker A, Arepally G, Crowther MA, Rice L, Datko F, Hook K, Propert KJ, Kuter DJ, Ortel TL, Konkle BA, Cines DB"
              },
              "max_score": 19,
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                  "factor": "magnitude",
                  "points": 3,
                  "present": true
                },
                {
                  "value": "typical_5_10",
                  "factor": "timing",
                  "points": 3,
                  "present": true
                },
                {
                  "value": "gt_20",
                  "factor": "nadir",
                  "points": 2,
                  "present": true
                },
                {
                  "value": "typical_new_ge_4d",
                  "factor": "thrombosis",
                  "points": 3,
                  "present": true
                },
                {
                  "factor": "skin_necrosis",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "systemic_reaction",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "bleeding",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "chronic_thrombocytopenia",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "new_drug_thrombocytopenia",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "severe_infection",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "overt_dic",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "intra_arterial_device",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "cpb_96h",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "no_other_cause",
                  "points": 3,
                  "present": true
                }
              ],
              "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.",
              "score_ge_2": true,
              "score_ge_5": true,
              "formula_expression": "HEP = magnitude (lt_30 -1, 30_to_50 1, gt_50 3) + timing (typical_lt_4 -2, typical_day_4 2, typical_5_10 3, typical_11_14 2, typical_gt_14 -1; rapid_lt_48h 2, rapid_gt_48h -1) + nadir (le_20 -2, gt_20 2) + thrombosis select at most one (none 0; typical_new_ge_4d 3, typical_progression 2; rapid_new 3, rapid_progression 2) + skin_necrosis 3 + systemic_reaction 2 + bleeding -1 + other causes select all (chronic_thrombocytopenia -1, new_drug_thrombocytopenia -2, severe_infection -2, overt_dic -2, intra_arterial_device -2, cpb_96h -1, no_other_cause 3 mutually exclusive with other causes); Cuker 2010; range -16 to 19; cutoff 2 was 100% sensitive / 60% specific vs expert panel; cutoff 5 was 86% sensitive / 88% specific"
            },
            {
              "score": 14,
              "formula": "hep",
              "citation": {
                "id": "cuker-2010",
                "doi": "10.1111/j.1538-7836.2010.04059.x",
                "pmid": "20854372",
                "title": "The HIT Expert Probability (HEP) Score: a novel pre-test probability model for heparin-induced thrombocytopenia based on broad expert opinion",
                "source": "J Thromb Haemost. 2010;8(12):2642-2650",
                "authors": "Cuker A, Arepally G, Crowther MA, Rice L, Datko F, Hook K, Propert KJ, Kuter DJ, Ortel TL, Konkle BA, Cines DB"
              },
              "max_score": 19,
              "components": [
                {
                  "value": "gt_50",
                  "factor": "magnitude",
                  "points": 3,
                  "present": true
                },
                {
                  "value": "typical_5_10",
                  "factor": "timing",
                  "points": 3,
                  "present": true
                },
                {
                  "value": "gt_20",
                  "factor": "nadir",
                  "points": 2,
                  "present": true
                },
                {
                  "value": "typical_new_ge_4d",
                  "factor": "thrombosis",
                  "points": 3,
                  "present": true
                },
                {
                  "factor": "skin_necrosis",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "systemic_reaction",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "bleeding",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "chronic_thrombocytopenia",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "new_drug_thrombocytopenia",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "severe_infection",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "overt_dic",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "intra_arterial_device",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "cpb_96h",
                  "points": 0,
                  "present": false
                },
                {
                  "factor": "no_other_cause",
                  "points": 3,
                  "present": true
                }
              ],
              "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.",
              "score_ge_2": true,
              "score_ge_5": true,
              "formula_expression": "HEP = magnitude (lt_30 -1, 30_to_50 1, gt_50 3) + timing (typical_lt_4 -2, typical_day_4 2, typical_5_10 3, typical_11_14 2, typical_gt_14 -1; rapid_lt_48h 2, rapid_gt_48h -1) + nadir (le_20 -2, gt_20 2) + thrombosis select at most one (none 0; typical_new_ge_4d 3, typical_progression 2; rapid_new 3, rapid_progression 2) + skin_necrosis 3 + systemic_reaction 2 + bleeding -1 + other causes select all (chronic_thrombocytopenia -1, new_drug_thrombocytopenia -2, severe_infection -2, overt_dic -2, intra_arterial_device -2, cpb_96h -1, no_other_cause 3 mutually exclusive with other causes); Cuker 2010; range -16 to 19; cutoff 2 was 100% sensitive / 60% specific vs expert panel; cutoff 5 was 86% sensitive / 88% specific"
            }
          ]
        }
      },
      "iconUrl": "https://api.magentlab.com/favicon.ico"
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
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      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "items"
              ],
              "properties": {
                "items": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "magnitude",
                      "timing",
                      "nadir",
                      "thrombosis",
                      "skin_necrosis",
                      "systemic_reaction",
                      "bleeding",
                      "chronic_thrombocytopenia",
                      "new_drug_thrombocytopenia",
                      "severe_infection",
                      "overt_dic",
                      "intra_arterial_device",
                      "cpb_96h",
                      "no_other_cause"
                    ],
                    "properties": {
                      "nadir": {
                        "type": "string",
                        "description": "Caller-assigned Cuker 2010 nadir platelet count. le_20 (≤20 ×10^9/L) scores -2; gt_20 (>20 ×10^9/L) scores 2. magent does not take a raw platelet count."
                      },
                      "timing": {
                        "type": "string",
                        "description": "Caller-assigned Cuker 2010 timing. Typical-onset: typical_lt_4 (fall begins <4 days) -2; typical_day_4 (day 4) 2; typical_5_10 (days 5-10) 3; typical_11_14 (days 11-14) 2; typical_gt_14 (>14 days) -1. Rapid-onset after re-exposure within 100 days: rapid_lt_48h (<48 h) 2; rapid_gt_48h (>48 h) -1. magent does not infer day of onset."
                      },
                      "cpb_96h": {
                        "type": "boolean",
                        "description": "Cardiopulmonary bypass within the previous 96 hours (Cuker 2010). true scores -1. Mutually exclusive with no_other_cause true."
                      },
                      "bleeding": {
                        "type": "boolean",
                        "description": "Presence of bleeding, petechiae, or extensive bruising (Cuker 2010). true scores -1; false scores 0."
                      },
                      "magnitude": {
                        "type": "string",
                        "description": "Caller-assigned Cuker 2010 magnitude of platelet fall (peak to nadir since heparin exposure). lt_30 (<30%) scores -1; 30_to_50 (30-50%) scores 1; gt_50 (>50%) scores 3. magent does not grade platelet counts."
                      },
                      "overt_dic": {
                        "type": "boolean",
                        "description": "Overt DIC as assigned by the caller (Cuker 2010: fibrinogen <100 mg/dL and D-dimer >5.0 μg/mL). true scores -2. magent does not assay fibrinogen or D-dimer. Mutually exclusive with no_other_cause true."
                      },
                      "thrombosis": {
                        "type": "string",
                        "description": "Caller-assigned Cuker 2010 thrombosis (select at most one). none scores 0. Typical-onset: typical_new_ge_4d (new VTE or ATE ≥4 days after heparin) 3; typical_progression (progression of preexisting VTE or ATE while receiving heparin) 2. Rapid-onset: rapid_new (new VTE or ATE after heparin) 3; rapid_progression 2."
                      },
                      "skin_necrosis": {
                        "type": "boolean",
                        "description": "Skin necrosis at subcutaneous heparin injection sites (Cuker 2010). true scores 3; false scores 0. magent does not examine the skin."
                      },
                      "no_other_cause": {
                        "type": "boolean",
                        "description": "No other apparent cause of thrombocytopenia (Cuker 2010). true scores 3. Must be false if any other-cause flag is true."
                      },
                      "severe_infection": {
                        "type": "boolean",
                        "description": "Severe infection as an other cause of thrombocytopenia (Cuker 2010). true scores -2. Mutually exclusive with no_other_cause true."
                      },
                      "systemic_reaction": {
                        "type": "boolean",
                        "description": "Acute systemic reaction after intravenous heparin bolus (Cuker 2010). true scores 2; false scores 0."
                      },
                      "intra_arterial_device": {
                        "type": "boolean",
                        "description": "Indwelling intra-arterial device (Cuker 2010 examples: IABP, VAD, ECMO). true scores -2. Mutually exclusive with no_other_cause true."
                      },
                      "chronic_thrombocytopenia": {
                        "type": "boolean",
                        "description": "Presence of a chronic thrombocytopenic disorder (Cuker 2010 other causes; select all that apply). true scores -1. Mutually exclusive with no_other_cause true."
                      },
                      "new_drug_thrombocytopenia": {
                        "type": "boolean",
                        "description": "Newly initiated non-heparin medication known to cause thrombocytopenia (Cuker 2010). true scores -2. Mutually exclusive with no_other_cause true."
                      }
                    }
                  },
                  "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 13:42Z
Last indexed by Roundhouse
2026-09-07 06:20Z
Last enriched (probe, favicon, geo)
2026-09-22 14:45Z
x402 version
2
Max timeout
600s
Liveness probe
HTTP 402
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. 10 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/hep, 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.