magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Searchofflineeip155:8453Exactvia cdp
MarsMastocytosisHematologyPrognosisAdvsm
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 8 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 00:34Z
—
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/mars",
"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/mars",
"tags": [
"mars",
"mastocytosis",
"hematology",
"prognosis",
"advsm"
],
"mimeType": "application/json",
"description": "Jawhar 2019 mutation-adjusted risk score (MARS) for advanced systemic mastocytosis: age >60 (1), hemoglobin <10 g/dL (1), platelets <100×10^9/L (1), exactly one S/A/R mutation among SRSF2, ASXL1, RUNX1 (1) or two or more (2, not both). Max 5. Low 0–1 (training-set median OS not reached), intermediate 2 (3.9 y), high 3–5 (1.9 y). Not WHO SM criteria. magent does not sequence or assay labs.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"age": 50,
"hemoglobin_g_l": 120,
"hemoglobin_g_dl": 12,
"platelets_10e9_l": 200,
"sar_mutation_count": 0
}
},
"output": {
"type": "json",
"example": {
"age": 50,
"score": 0,
"formula": "mars",
"citation": {
"id": "jawhar-2019",
"doi": "10.1200/JCO.19.00640",
"pmid": "31509472",
"title": "MARS: Mutation-Adjusted Risk Score for Advanced Systemic Mastocytosis",
"source": "J Clin Oncol. 2019;37(31):2846-2856",
"authors": "Jawhar M, Schwaab J, Álvarez-Twose I, Shoumariyeh K, Naumann N, Lübke J, Perkins C, Muñoz-González JI, Meggendorfer M, Kennedy V, Metzgeroth G, Fabarius A, Pfeifer D, Sotlar K, Horny HP, von Bubnoff N, Haferlach T, Cross NCP, Hofmann WK, Sperr WR, García-Montero AC, Valent P, Gotlib J, Orfao A, Reiter A"
},
"max_score": 5,
"risk_band": "low",
"components": [
{
"value": 50,
"factor": "age_gt_60",
"points": 0,
"present": false
},
{
"value": 12,
"factor": "hemoglobin_lt_10",
"points": 0,
"present": false
},
{
"value": 200,
"factor": "platelets_lt_100",
"points": 0,
"present": false
},
{
"value": 0,
"factor": "sar_mutations",
"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.",
"hemoglobin_g_dl": 12,
"platelets_10e9_l": 200,
"formula_expression": "MARS = age_gt_60 1 + hemoglobin_lt_10 1 + platelets_lt_100 1 + sar_mutations (exactly one S/A/R 1, two or more 2; SRSF2, ASXL1, RUNX1); Jawhar 2019; max 5; low 0-1 (training-set median OS not reached), intermediate 2 (3.9 years), high 3-5 (1.9 years)",
"sar_mutation_count": 0
}
},
"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": [
"age",
"platelets_10e9_l",
"sar_mutation_count"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (integer 18-120). >60 scores 1 (Jawhar 2019). Age 61 scores; age 60 is the ≤60 arm and scores 0."
},
"hemoglobin_g_l": {
"type": "number",
"description": "Hemoglobin in g/L (30-220). Converted as hemoglobin_g_dl = hemoglobin_g_l / 10. Provide this or hemoglobin_g_dl, not both. <100 g/L scores 1. 100 is the ≥100 arm and scores 0."
},
"hemoglobin_g_dl": {
"type": "number",
"description": "Hemoglobin in g/dL (3-22). Provide this or hemoglobin_g_l, not both. <10 g/dL (<100 g/L) scores 1 (Jawhar 2019). 10.0 is the ≥10 arm and scores 0. magent does not assay hemoglobin."
},
"platelets_10e9_l": {
"type": "number",
"description": "Platelet count in 10^9/L (1-2000). <100 scores 1 (Jawhar 2019). 100.0 is the ≥100 arm and scores 0. magent does not assay platelets."
},
"sar_mutation_count": {
"type": "integer",
"description": "Caller-assigned count of S/A/R mutations among SRSF2, ASXL1, and RUNX1 (integer 0, 1, or 2; 2 means two or more). Exactly one scores 1. Two or more scores 2 (not 1 plus 2). Count 0 scores 0. magent does not sequence."
}
}
}
},
"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/mars",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"age": 50,
"hemoglobin_g_l": 120,
"hemoglobin_g_dl": 12,
"platelets_10e9_l": 200,
"sar_mutation_count": 0
},
{
"age": 50,
"hemoglobin_g_l": 120,
"hemoglobin_g_dl": 12,
"platelets_10e9_l": 200,
"sar_mutation_count": 0
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/mars",
"count": 2,
"items": [
{
"age": 50,
"score": 0,
"formula": "mars",
"citation": {
"id": "jawhar-2019",
"doi": "10.1200/JCO.19.00640",
"pmid": "31509472",
"title": "MARS: Mutation-Adjusted Risk Score for Advanced Systemic Mastocytosis",
"source": "J Clin Oncol. 2019;37(31):2846-2856",
"authors": "Jawhar M, Schwaab J, Álvarez-Twose I, Shoumariyeh K, Naumann N, Lübke J, Perkins C, Muñoz-González JI, Meggendorfer M, Kennedy V, Metzgeroth G, Fabarius A, Pfeifer D, Sotlar K, Horny HP, von Bubnoff N, Haferlach T, Cross NCP, Hofmann WK, Sperr WR, García-Montero AC, Valent P, Gotlib J, Orfao A, Reiter A"
},
"max_score": 5,
"risk_band": "low",
"components": [
{
"value": 50,
"factor": "age_gt_60",
"points": 0,
"present": false
},
{
"value": 12,
"factor": "hemoglobin_lt_10",
"points": 0,
"present": false
},
{
"value": 200,
"factor": "platelets_lt_100",
"points": 0,
"present": false
},
{
"value": 0,
"factor": "sar_mutations",
"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.",
"hemoglobin_g_dl": 12,
"platelets_10e9_l": 200,
"formula_expression": "MARS = age_gt_60 1 + hemoglobin_lt_10 1 + platelets_lt_100 1 + sar_mutations (exactly one S/A/R 1, two or more 2; SRSF2, ASXL1, RUNX1); Jawhar 2019; max 5; low 0-1 (training-set median OS not reached), intermediate 2 (3.9 years), high 3-5 (1.9 years)",
"sar_mutation_count": 0
},
{
"age": 50,
"score": 0,
"formula": "mars",
"citation": {
"id": "jawhar-2019",
"doi": "10.1200/JCO.19.00640",
"pmid": "31509472",
"title": "MARS: Mutation-Adjusted Risk Score for Advanced Systemic Mastocytosis",
"source": "J Clin Oncol. 2019;37(31):2846-2856",
"authors": "Jawhar M, Schwaab J, Álvarez-Twose I, Shoumariyeh K, Naumann N, Lübke J, Perkins C, Muñoz-González JI, Meggendorfer M, Kennedy V, Metzgeroth G, Fabarius A, Pfeifer D, Sotlar K, Horny HP, von Bubnoff N, Haferlach T, Cross NCP, Hofmann WK, Sperr WR, García-Montero AC, Valent P, Gotlib J, Orfao A, Reiter A"
},
"max_score": 5,
"risk_band": "low",
"components": [
{
"value": 50,
"factor": "age_gt_60",
"points": 0,
"present": false
},
{
"value": 12,
"factor": "hemoglobin_lt_10",
"points": 0,
"present": false
},
{
"value": 200,
"factor": "platelets_lt_100",
"points": 0,
"present": false
},
{
"value": 0,
"factor": "sar_mutations",
"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.",
"hemoglobin_g_dl": 12,
"platelets_10e9_l": 200,
"formula_expression": "MARS = age_gt_60 1 + hemoglobin_lt_10 1 + platelets_lt_100 1 + sar_mutations (exactly one S/A/R 1, two or more 2; SRSF2, ASXL1, RUNX1); Jawhar 2019; max 5; low 0-1 (training-set median OS not reached), intermediate 2 (3.9 years), high 3-5 (1.9 years)",
"sar_mutation_count": 0
}
]
}
},
"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": [
"age",
"platelets_10e9_l",
"sar_mutation_count"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (integer 18-120). >60 scores 1 (Jawhar 2019). Age 61 scores; age 60 is the ≤60 arm and scores 0."
},
"hemoglobin_g_l": {
"type": "number",
"description": "Hemoglobin in g/L (30-220). Converted as hemoglobin_g_dl = hemoglobin_g_l / 10. Provide this or hemoglobin_g_dl, not both. <100 g/L scores 1. 100 is the ≥100 arm and scores 0."
},
"hemoglobin_g_dl": {
"type": "number",
"description": "Hemoglobin in g/dL (3-22). Provide this or hemoglobin_g_l, not both. <10 g/dL (<100 g/L) scores 1 (Jawhar 2019). 10.0 is the ≥10 arm and scores 0. magent does not assay hemoglobin."
},
"platelets_10e9_l": {
"type": "number",
"description": "Platelet count in 10^9/L (1-2000). <100 scores 1 (Jawhar 2019). 100.0 is the ≥100 arm and scores 0. magent does not assay platelets."
},
"sar_mutation_count": {
"type": "integer",
"description": "Caller-assigned count of S/A/R mutations among SRSF2, ASXL1, and RUNX1 (integer 0, 1, or 2; 2 means two or more). Exactly one scores 1. Two or more scores 2 (not 1 plus 2). Count 0 scores 0. magent does not sequence."
}
}
},
"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 00:34Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-10 15:45Z
- 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. 8 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/mars, 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.