Roundhouse AI

magent

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

Tradingofflineeip155:8453Exactvia cdp
https://api.magentlab.com/api/calc/rasp
RaspHivExposureNeedle-stickCalculator
Calls · 30d
2→ 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.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-02 08:03Z
—
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/rasp",
        "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/rasp",
    "tags": [
      "rasp",
      "hiv",
      "exposure",
      "needle-stick",
      "calculator"
    ],
    "mimeType": "application/json",
    "description": "Vertesi 2003 RASP multiplies exclusive source (A), inoculum type (B), and transmission (C) to Z, then total_risk = (1/Z) × volume (D). Table 2: <1/1000 definitely indicated; 1/1000–1/10 000 recommended but optional; 1/10 001–1/100 000 optional but not recommended; >1/100 000 not indicated. Average Canadian community prevalence is baked into the scores. Caller-assigned tokens. Not a PEP order. magent does not interpret the source patient.",
    "serviceName": "magent"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "transmission": "deep_transcutaneous_visible_bleeding",
            "inoculum_type": "fresh_blood",
            "inoculum_volume": "small_small_bore_lt_22g",
            "source_population": "known_hiv_asymptomatic"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "z": 1000,
            "formula": "rasp",
            "citation": {
              "id": "vertesi-2003",
              "doi": "10.1017/S1481803500008113",
              "pmid": "12630044",
              "title": "Risk Assessment Stratification Protocol (RASP) to help patients decide on the use of postexposure prophylaxis for HIV exposure",
              "source": "CJEM. 2003;5(1):46-48",
              "authors": "Vertesi L"
            },
            "basic_risk": 0.001,
            "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_level": "definitely_indicated",
            "total_risk": 0.003,
            "risk_one_in": 333,
            "source_score": 10,
            "transmission": "deep_transcutaneous_visible_bleeding",
            "inoculum_type": "fresh_blood",
            "inoculum_volume": "small_small_bore_lt_22g",
            "volume_modifier": 3,
            "source_population": "known_hiv_asymptomatic",
            "formula_expression": "Z = A * B * C; basic_risk = 1/Z; total_risk = basic_risk * D; Vertesi 2003 Figure 1 exclusive A source, B inoculum, C transmission, D volume; Table 2 <1/1000 definitely indicated; 1/1000-1/10 000 recommended but optional; 1/10 001-1/100 000 optional but not recommended; >1/100 000 not indicated",
            "transmission_score": 100,
            "inoculum_type_score": 1,
            "suggested_treatment": "Definitely indicated"
          }
        },
        "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": [
                  "source_population",
                  "inoculum_type",
                  "transmission",
                  "inoculum_volume"
                ],
                "properties": {
                  "transmission": {
                    "enum": [
                      "intravenous",
                      "deep_intramuscular",
                      "deep_transcutaneous_visible_bleeding",
                      "superficial_transcutaneous_no_bleeding",
                      "mucosal_contact",
                      "intact_skin"
                    ],
                    "type": "string",
                    "description": "Vertesi 2003 Step C method of transmission as assigned by the caller (exclusive). intravenous scores 1; deep_intramuscular scores 10; deep_transcutaneous_visible_bleeding scores 100; superficial_transcutaneous_no_bleeding scores 200; mucosal_contact scores 500; intact_skin scores 1000. magent does not examine the wound."
                  },
                  "inoculum_type": {
                    "enum": [
                      "fresh_blood",
                      "body_fluids_at_risk",
                      "dried_old_blood",
                      "low_risk_secretions"
                    ],
                    "type": "string",
                    "description": "Vertesi 2003 Step B inoculum type as assigned by the caller (exclusive). fresh_blood scores 1; body_fluids_at_risk scores 10 (semen); dried_old_blood scores 100; low_risk_secretions scores 1000 (tears, saliva, urine). magent does not classify the specimen."
                  },
                  "inoculum_volume": {
                    "enum": [
                      "massive_transfusion",
                      "measurable_gt_1_ml",
                      "moderate_large_bore_gt_22g",
                      "small_small_bore_lt_22g",
                      "trace_surface"
                    ],
                    "type": "string",
                    "description": "Vertesi 2003 Step D volume modifier as assigned by the caller (exclusive). massive_transfusion scores 100; measurable_gt_1_ml scores 10; moderate_large_bore_gt_22g scores 5; small_small_bore_lt_22g scores 3; trace_surface scores 1 (suture needle). 22 g exactly is not a published token. magent does not measure volume."
                  },
                  "source_population": {
                    "enum": [
                      "known_hiv_acute_aids",
                      "known_hiv_asymptomatic",
                      "unknown_hiv_high_risk",
                      "unknown_hiv_low_risk"
                    ],
                    "type": "string",
                    "description": "Vertesi 2003 Step A source population as assigned by the caller (exclusive). known_hiv_acute_aids scores 1 (acute AIDS illness); known_hiv_asymptomatic scores 10; unknown_hiv_high_risk scores 100; unknown_hiv_low_risk scores 1000. magent does not interpret the source patient."
                  }
                }
              }
            },
            "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/rasp",
      "assetTransferMethod": "eip3009"
    },
    "payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 600
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "items": [
            {
              "transmission": "deep_transcutaneous_visible_bleeding",
              "inoculum_type": "fresh_blood",
              "inoculum_volume": "small_small_bore_lt_22g",
              "source_population": "known_hiv_asymptomatic"
            },
            {
              "transmission": "deep_transcutaneous_visible_bleeding",
              "inoculum_type": "fresh_blood",
              "inoculum_volume": "small_small_bore_lt_22g",
              "source_population": "known_hiv_asymptomatic"
            }
          ]
        },
        "type": "http",
        "method": "POST"
      },
      "output": {
        "type": "json",
        "example": {
          "path": "/api/calc/rasp",
          "count": 2,
          "items": [
            {
              "z": 1000,
              "formula": "rasp",
              "citation": {
                "id": "vertesi-2003",
                "doi": "10.1017/S1481803500008113",
                "pmid": "12630044",
                "title": "Risk Assessment Stratification Protocol (RASP) to help patients decide on the use of postexposure prophylaxis for HIV exposure",
                "source": "CJEM. 2003;5(1):46-48",
                "authors": "Vertesi L"
              },
              "basic_risk": 0.001,
              "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_level": "definitely_indicated",
              "total_risk": 0.003,
              "risk_one_in": 333,
              "source_score": 10,
              "transmission": "deep_transcutaneous_visible_bleeding",
              "inoculum_type": "fresh_blood",
              "inoculum_volume": "small_small_bore_lt_22g",
              "volume_modifier": 3,
              "source_population": "known_hiv_asymptomatic",
              "formula_expression": "Z = A * B * C; basic_risk = 1/Z; total_risk = basic_risk * D; Vertesi 2003 Figure 1 exclusive A source, B inoculum, C transmission, D volume; Table 2 <1/1000 definitely indicated; 1/1000-1/10 000 recommended but optional; 1/10 001-1/100 000 optional but not recommended; >1/100 000 not indicated",
              "transmission_score": 100,
              "inoculum_type_score": 1,
              "suggested_treatment": "Definitely indicated"
            },
            {
              "z": 1000,
              "formula": "rasp",
              "citation": {
                "id": "vertesi-2003",
                "doi": "10.1017/S1481803500008113",
                "pmid": "12630044",
                "title": "Risk Assessment Stratification Protocol (RASP) to help patients decide on the use of postexposure prophylaxis for HIV exposure",
                "source": "CJEM. 2003;5(1):46-48",
                "authors": "Vertesi L"
              },
              "basic_risk": 0.001,
              "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_level": "definitely_indicated",
              "total_risk": 0.003,
              "risk_one_in": 333,
              "source_score": 10,
              "transmission": "deep_transcutaneous_visible_bleeding",
              "inoculum_type": "fresh_blood",
              "inoculum_volume": "small_small_bore_lt_22g",
              "volume_modifier": 3,
              "source_population": "known_hiv_asymptomatic",
              "formula_expression": "Z = A * B * C; basic_risk = 1/Z; total_risk = basic_risk * D; Vertesi 2003 Figure 1 exclusive A source, B inoculum, C transmission, D volume; Table 2 <1/1000 definitely indicated; 1/1000-1/10 000 recommended but optional; 1/10 001-1/100 000 optional but not recommended; >1/100 000 not indicated",
              "transmission_score": 100,
              "inoculum_type_score": 1,
              "suggested_treatment": "Definitely indicated"
            }
          ]
        }
      },
      "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": [
                      "source_population",
                      "inoculum_type",
                      "transmission",
                      "inoculum_volume"
                    ],
                    "properties": {
                      "transmission": {
                        "enum": [
                          "intravenous",
                          "deep_intramuscular",
                          "deep_transcutaneous_visible_bleeding",
                          "superficial_transcutaneous_no_bleeding",
                          "mucosal_contact",
                          "intact_skin"
                        ],
                        "type": "string",
                        "description": "Vertesi 2003 Step C method of transmission as assigned by the caller (exclusive). intravenous scores 1; deep_intramuscular scores 10; deep_transcutaneous_visible_bleeding scores 100; superficial_transcutaneous_no_bleeding scores 200; mucosal_contact scores 500; intact_skin scores 1000. magent does not examine the wound."
                      },
                      "inoculum_type": {
                        "enum": [
                          "fresh_blood",
                          "body_fluids_at_risk",
                          "dried_old_blood",
                          "low_risk_secretions"
                        ],
                        "type": "string",
                        "description": "Vertesi 2003 Step B inoculum type as assigned by the caller (exclusive). fresh_blood scores 1; body_fluids_at_risk scores 10 (semen); dried_old_blood scores 100; low_risk_secretions scores 1000 (tears, saliva, urine). magent does not classify the specimen."
                      },
                      "inoculum_volume": {
                        "enum": [
                          "massive_transfusion",
                          "measurable_gt_1_ml",
                          "moderate_large_bore_gt_22g",
                          "small_small_bore_lt_22g",
                          "trace_surface"
                        ],
                        "type": "string",
                        "description": "Vertesi 2003 Step D volume modifier as assigned by the caller (exclusive). massive_transfusion scores 100; measurable_gt_1_ml scores 10; moderate_large_bore_gt_22g scores 5; small_small_bore_lt_22g scores 3; trace_surface scores 1 (suture needle). 22 g exactly is not a published token. magent does not measure volume."
                      },
                      "source_population": {
                        "enum": [
                          "known_hiv_acute_aids",
                          "known_hiv_asymptomatic",
                          "unknown_hiv_high_risk",
                          "unknown_hiv_low_risk"
                        ],
                        "type": "string",
                        "description": "Vertesi 2003 Step A source population as assigned by the caller (exclusive). known_hiv_acute_aids scores 1 (acute AIDS illness); known_hiv_asymptomatic scores 10; unknown_hiv_high_risk scores 100; unknown_hiv_low_risk scores 1000. magent does not interpret the source patient."
                      }
                    }
                  },
                  "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 08:03Z
Last indexed by Roundhouse
2026-09-07 06:20Z
Last enriched (probe, favicon, geo)
2026-09-10 23:45Z
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. 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/rasp, 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.