magent

Powers 2018 Table 6 Class III Harm IVT. contraindicated iff any of 15 caller flags: CT ICH; recent ischemic stroke, severe head trauma, or intracranial/spinal surgery; posttraumatic infarction; history of ICH; SAH presentation; GI malignancy or bleed 21d; coagulopathy; LMWH 24h; DOAC not cleared; GP IIb/IIIa; infective endocarditis; aortic arch dissection; intra-axial neoplasm. Not Class I eligibility, time window, or a dose. magent does not read CT or assay labs. Not a treatment order.

Mediaofflineeip155:8453Exactvia cdp
IvtAlteplaseStrokeNeurologyCalculator
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 20:05Z
—
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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                  "infective_endocarditis": {
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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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              "formula_expression": "contraindicated iff ct_ich or ischemic_stroke_within_3_mo or severe_head_trauma_within_3_mo or posttraumatic_infarction_in_hospital or intracranial_spinal_surgery_within_3_mo or history_ich or sah_presentation or gi_malignancy_or_gi_bleed_21d or coagulopathy or lmwh_treatment_dose_within_24h or doac_not_cleared or gp2b3a_concurrent or infective_endocarditis or aortic_arch_dissection or intra_axial_neoplasm (Powers 2018 Table 6 Class III: Harm). Not Class III No Benefit (unclear/wake-up onset windows, extensive CT hypoattenuation). Not Class I eligibility. Not 0-3h vs 3-4.5h. Not a dose. magent does not read CT, assay coagulation, or examine the patient. Not a treatment order",
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                      "history_ich": {
                        "type": "boolean",
                        "description": "History of intracranial hemorrhage as assigned by the caller (Powers 2018 Table 6 Class III: Harm). true or false. magent does not read prior imaging."
                      },
                      "coagulopathy": {
                        "type": "boolean",
                        "description": "Caller-assigned coagulopathy as in Table 6 (platelets <100000/mm3 or INR >1.7 or aPTT >40 s or PT >15 s). One flag. true or false. magent does not assay labs."
                      },
                      "doac_not_cleared": {
                        "type": "boolean",
                        "description": "Taking a direct thrombin or factor Xa inhibitor AND labs not documented normal AND last dose not >48 h with normal renal function, as assigned by the caller from that Table 6 row. true or false. magent does not assay labs."
                      },
                      "sah_presentation": {
                        "type": "boolean",
                        "description": "Presentation most consistent with subarachnoid hemorrhage as assigned by the caller (Powers 2018 Table 6 Class III: Harm). true or false. magent does not examine the patient."
                      },
                      "gp2b3a_concurrent": {
                        "type": "boolean",
                        "description": "Concurrent GP IIb/IIIa inhibitor as assigned by the caller (Powers 2018 Table 6 Class III: Harm). true or false. magent does not read a medication list."
                      },
                      "intra_axial_neoplasm": {
                        "type": "boolean",
                        "description": "Intra-axial intracranial neoplasm as assigned by the caller (Powers 2018 Table 6 Class III: Harm). true or false. magent does not read imaging."
                      },
                      "aortic_arch_dissection": {
                        "type": "boolean",
                        "description": "Known or suspected aortic arch dissection as assigned by the caller (Powers 2018 Table 6 Class III: Harm). true or false. magent does not examine the patient."
                      },
                      "infective_endocarditis": {
                        "type": "boolean",
                        "description": "Symptoms consistent with infective endocarditis as assigned by the caller (Powers 2018 Table 6 Class III: Harm). true or false. magent does not examine the patient."
                      },
                      "ischemic_stroke_within_3_mo": {
                        "type": "boolean",
                        "description": "Prior ischemic stroke within 3 months as assigned by the caller (Powers 2018 Table 6 Class III: Harm). true or false. magent does not date prior strokes."
                      },
                      "gi_malignancy_or_gi_bleed_21d": {
                        "type": "boolean",
                        "description": "Structural GI malignancy or GI bleed within 21 days as assigned by the caller (Powers 2018 Table 6 Class III: Harm). true or false. magent does not examine the patient."
                      },
                      "lmwh_treatment_dose_within_24h": {
                        "type": "boolean",
                        "description": "Treatment-dose LMWH within the previous 24 h as assigned by the caller (Powers 2018 Table 6 Class III: Harm). true or false. magent does not read a medication list."
                      },
                      "severe_head_trauma_within_3_mo": {
                        "type": "boolean",
                        "description": "Recent severe head trauma within 3 months as assigned by the caller (Powers 2018 Table 6 Class III: Harm). true or false. magent does not examine the patient."
                      },
                      "posttraumatic_infarction_in_hospital": {
                        "type": "boolean",
                        "description": "Posttraumatic infarction in the acute in-hospital phase as assigned by the caller (Powers 2018 Table 6 Class III: Harm). true or false. magent does not examine the patient."
                      },
                      "intracranial_spinal_surgery_within_3_mo": {
                        "type": "boolean",
                        "description": "Intracranial or spinal surgery within 3 months as assigned by the caller (Powers 2018 Table 6 Class III: Harm). true or false. magent does not read an operative note."
                      }
                    }
                  },
                  "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 20:05Z
Last indexed by Roundhouse
2026-09-07 06:20Z
Last enriched (probe, favicon, geo)
2026-09-11 12:16Z
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/ivt_contraindications, 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.