magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Otherofflineeip155:8453Exactvia cdp
Who-2016PvHematologyJak2Calculator
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 13:41Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x836Be278f1739fB4308091cD1852F7971Bc19Ee2The 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/who_pv",
"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/who_pv",
"tags": [
"who-2016",
"pv",
"hematology",
"jak2",
"calculator"
],
"mimeType": "application/json",
"description": "WHO 2016 polycythemia vera criteria (Arber 2016). Met when all three majors hold, or when major 1 and major 2 hold with subnormal EPO. Major 1 is male Hb >16.5 g/dL or Hct >49%, female Hb >16.0 or Hct >48%, or increased red-cell mass. Major 2 is caller-assigned marrow panmyelosis. Major 3 is JAK2 V617F or exon 12. Not a medical device, not a WHO diagnosis, and not WHO 2022. magent does not assay EPO or sequence JAK2.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"sex": "male",
"subnormal_epo": false,
"hemoglobin_g_dl": 15,
"hematocrit_percent": 45,
"jak2_v617f_or_exon12": false,
"bone_marrow_panmyelosis": false,
"increased_red_cell_mass": false
}
},
"output": {
"type": "json",
"example": {
"sex": "male",
"minor": false,
"formula": "who_pv",
"major_1": false,
"major_2": false,
"major_3": false,
"citation": {
"id": "arber-2016",
"doi": "10.1182/blood-2016-03-643544",
"pmid": "27069254",
"title": "The 2016 revision to the World Health Organization classification of myeloid neoplasms and acute leukemia",
"source": "Blood. 2016;127(20):2391-2405",
"authors": "Arber DA, Orazi A, Hasserjian R, Thiele J, Borowitz MJ, Le Beau MM, Bloomfield CD, Cazzola M, Vardiman JW"
},
"criteria": [
{
"met": false,
"factor": "major_1"
},
{
"met": false,
"factor": "major_2"
},
{
"met": false,
"factor": "major_3"
},
{
"met": false,
"factor": "minor"
}
],
"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.",
"subnormal_epo": false,
"hemoglobin_g_dl": 15,
"pv_criteria_met": false,
"formula_expression": "pv_criteria_met iff (major_1 and major_2 and major_3) or (major_1 and major_2 and minor); major_1 iff increased_red_cell_mass or (male and (hemoglobin_g_dl > 16.5 or hematocrit_percent > 49)) or (female and (hemoglobin_g_dl > 16.0 or hematocrit_percent > 48)); major_2 bone_marrow_panmyelosis; major_3 jak2_v617f_or_exon12; minor subnormal_epo (Arber 2016 WHO 2016 PV). Not WHO 2022",
"hematocrit_percent": 45,
"jak2_v617f_or_exon12": false,
"bone_marrow_panmyelosis": false,
"increased_red_cell_mass": 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": [
"sex",
"increased_red_cell_mass",
"bone_marrow_panmyelosis",
"jak2_v617f_or_exon12",
"subnormal_epo"
],
"properties": {
"sex": {
"enum": [
"female",
"male"
],
"type": "string",
"description": "female or male (Arber 2016 WHO 2016 PV hemoglobin/hematocrit thresholds). Required even when only increased_red_cell_mass is used. Assigned by the caller."
},
"subnormal_epo": {
"type": "boolean",
"description": "Subnormal serum erythropoietin as assigned by the caller (Arber 2016 WHO 2016 minor criterion). true or false. magent does not assay EPO."
},
"hemoglobin_g_dl": {
"type": "number",
"description": "Hemoglobin in g/dL (3-22). Major 1 meets when male >16.5 or female >16.0. Optional when hematocrit_percent is sent or increased_red_cell_mass is true. At least one of hemoglobin_g_dl, hematocrit_percent, or increased_red_cell_mass true is required. magent does not assay hemoglobin."
},
"hematocrit_percent": {
"type": "number",
"description": "Hematocrit percent (10-70). Major 1 meets when male >49 or female >48. Optional when hemoglobin_g_dl is sent or increased_red_cell_mass is true. magent does not assay hematocrit."
},
"jak2_v617f_or_exon12": {
"type": "boolean",
"description": "JAK2 V617F or JAK2 exon 12 mutation as assigned by the caller (Arber 2016 WHO 2016 major 3). true or false. magent does not sequence JAK2."
},
"bone_marrow_panmyelosis": {
"type": "boolean",
"description": "WHO 2016 marrow major as assigned by the caller (age-adjusted hypercellularity with panmyelosis, including pleomorphic mature megakaryocytes). true or false. magent does not read slides."
},
"increased_red_cell_mass": {
"type": "boolean",
"description": "Increased red-cell mass as assigned by the caller (Arber 2016 WHO 2016 major 1 alternative to Hb/Hct). true or false. true meets major 1 even when Hb/Hct are omitted or below threshold. magent does not measure red-cell mass."
}
}
}
},
"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/who_pv",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"sex": "male",
"subnormal_epo": false,
"hemoglobin_g_dl": 15,
"hematocrit_percent": 45,
"jak2_v617f_or_exon12": false,
"bone_marrow_panmyelosis": false,
"increased_red_cell_mass": false
},
{
"sex": "male",
"subnormal_epo": false,
"hemoglobin_g_dl": 15,
"hematocrit_percent": 45,
"jak2_v617f_or_exon12": false,
"bone_marrow_panmyelosis": false,
"increased_red_cell_mass": false
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/who_pv",
"count": 2,
"items": [
{
"sex": "male",
"minor": false,
"formula": "who_pv",
"major_1": false,
"major_2": false,
"major_3": false,
"citation": {
"id": "arber-2016",
"doi": "10.1182/blood-2016-03-643544",
"pmid": "27069254",
"title": "The 2016 revision to the World Health Organization classification of myeloid neoplasms and acute leukemia",
"source": "Blood. 2016;127(20):2391-2405",
"authors": "Arber DA, Orazi A, Hasserjian R, Thiele J, Borowitz MJ, Le Beau MM, Bloomfield CD, Cazzola M, Vardiman JW"
},
"criteria": [
{
"met": false,
"factor": "major_1"
},
{
"met": false,
"factor": "major_2"
},
{
"met": false,
"factor": "major_3"
},
{
"met": false,
"factor": "minor"
}
],
"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.",
"subnormal_epo": false,
"hemoglobin_g_dl": 15,
"pv_criteria_met": false,
"formula_expression": "pv_criteria_met iff (major_1 and major_2 and major_3) or (major_1 and major_2 and minor); major_1 iff increased_red_cell_mass or (male and (hemoglobin_g_dl > 16.5 or hematocrit_percent > 49)) or (female and (hemoglobin_g_dl > 16.0 or hematocrit_percent > 48)); major_2 bone_marrow_panmyelosis; major_3 jak2_v617f_or_exon12; minor subnormal_epo (Arber 2016 WHO 2016 PV). Not WHO 2022",
"hematocrit_percent": 45,
"jak2_v617f_or_exon12": false,
"bone_marrow_panmyelosis": false,
"increased_red_cell_mass": false
},
{
"sex": "male",
"minor": false,
"formula": "who_pv",
"major_1": false,
"major_2": false,
"major_3": false,
"citation": {
"id": "arber-2016",
"doi": "10.1182/blood-2016-03-643544",
"pmid": "27069254",
"title": "The 2016 revision to the World Health Organization classification of myeloid neoplasms and acute leukemia",
"source": "Blood. 2016;127(20):2391-2405",
"authors": "Arber DA, Orazi A, Hasserjian R, Thiele J, Borowitz MJ, Le Beau MM, Bloomfield CD, Cazzola M, Vardiman JW"
},
"criteria": [
{
"met": false,
"factor": "major_1"
},
{
"met": false,
"factor": "major_2"
},
{
"met": false,
"factor": "major_3"
},
{
"met": false,
"factor": "minor"
}
],
"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.",
"subnormal_epo": false,
"hemoglobin_g_dl": 15,
"pv_criteria_met": false,
"formula_expression": "pv_criteria_met iff (major_1 and major_2 and major_3) or (major_1 and major_2 and minor); major_1 iff increased_red_cell_mass or (male and (hemoglobin_g_dl > 16.5 or hematocrit_percent > 49)) or (female and (hemoglobin_g_dl > 16.0 or hematocrit_percent > 48)); major_2 bone_marrow_panmyelosis; major_3 jak2_v617f_or_exon12; minor subnormal_epo (Arber 2016 WHO 2016 PV). Not WHO 2022",
"hematocrit_percent": 45,
"jak2_v617f_or_exon12": false,
"bone_marrow_panmyelosis": false,
"increased_red_cell_mass": 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": [
"sex",
"increased_red_cell_mass",
"bone_marrow_panmyelosis",
"jak2_v617f_or_exon12",
"subnormal_epo"
],
"properties": {
"sex": {
"enum": [
"female",
"male"
],
"type": "string",
"description": "female or male (Arber 2016 WHO 2016 PV hemoglobin/hematocrit thresholds). Required even when only increased_red_cell_mass is used. Assigned by the caller."
},
"subnormal_epo": {
"type": "boolean",
"description": "Subnormal serum erythropoietin as assigned by the caller (Arber 2016 WHO 2016 minor criterion). true or false. magent does not assay EPO."
},
"hemoglobin_g_dl": {
"type": "number",
"description": "Hemoglobin in g/dL (3-22). Major 1 meets when male >16.5 or female >16.0. Optional when hematocrit_percent is sent or increased_red_cell_mass is true. At least one of hemoglobin_g_dl, hematocrit_percent, or increased_red_cell_mass true is required. magent does not assay hemoglobin."
},
"hematocrit_percent": {
"type": "number",
"description": "Hematocrit percent (10-70). Major 1 meets when male >49 or female >48. Optional when hemoglobin_g_dl is sent or increased_red_cell_mass is true. magent does not assay hematocrit."
},
"jak2_v617f_or_exon12": {
"type": "boolean",
"description": "JAK2 V617F or JAK2 exon 12 mutation as assigned by the caller (Arber 2016 WHO 2016 major 3). true or false. magent does not sequence JAK2."
},
"bone_marrow_panmyelosis": {
"type": "boolean",
"description": "WHO 2016 marrow major as assigned by the caller (age-adjusted hypercellularity with panmyelosis, including pleomorphic mature megakaryocytes). true or false. magent does not read slides."
},
"increased_red_cell_mass": {
"type": "boolean",
"description": "Increased red-cell mass as assigned by the caller (Arber 2016 WHO 2016 major 1 alternative to Hb/Hct). true or false. true meets major 1 even when Hb/Hct are omitted or below threshold. magent does not measure red-cell mass."
}
}
},
"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 13:41Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-13 07:45Z
- x402 version
- 2
- Max timeout
- 600s
- Liveness probe
- HTTP 0
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.
Show the promptHide 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/who_pv, 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.