magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Tradingofflineeip155:8453Exactvia cdp
DliCd3LeukapheresisHematologyCalculator
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 2026-09-03 03:21Z
—
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/dli_volume",
"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/dli_volume",
"tags": [
"dli",
"cd3",
"leukapheresis",
"hematology",
"calculator"
],
"mimeType": "application/json",
"description": "Shi 2020 donor whole-blood liters to process for a CD3+ DLI target: (recipient_weight_kg × cd3_target_per_kg × num_infusions) / (0.6 × donor_alc_per_ul × collection_efficiency × 1e6). Estimates CD3 as 60% of donor ALC. Caller assigns collection_efficiency in (0,1]; the paper used first-quartile 0.57. Deterministic published arithmetic with citation. Not an apheresis order; magent does not run a device or the paper's CD34 HPC algorithm.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"num_infusions": 1,
"donor_alc_per_ul": 1800,
"cd3_target_per_kg": 10000000,
"recipient_weight_kg": 70,
"collection_efficiency": 0.5
}
},
"output": {
"type": "json",
"example": {
"formula": "shi_2020",
"citation": {
"id": "shi-2020-dli",
"doi": "10.1111/trf.15576",
"pmid": "31756000",
"title": "Validation of simple prediction algorithms to consistently achieve CD3+ and postselection CD34+ targets with leukapheresis",
"source": "Transfusion. 2020;60(1):133-143",
"authors": "Shi PA, Sachais BS, Nandi V, Brochstein JA, Weinberg RS, Zhang J, Yoon EJ"
},
"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.",
"cd3_fraction": 0.6,
"num_infusions": 1,
"donor_alc_per_ul": 1800,
"process_volume_l": 1.3,
"cd3_target_per_kg": 10000000,
"formula_expression": "process_volume_l = (recipient_weight_kg * cd3_target_per_kg * num_infusions) / (0.6 * donor_alc_per_ul * collection_efficiency * 1e6)",
"total_cd3_required": 700000000,
"recipient_weight_kg": 70,
"estimated_cd3_per_ul": 1080,
"collection_efficiency": 0.5
}
},
"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": [
"recipient_weight_kg",
"cd3_target_per_kg",
"donor_alc_per_ul",
"collection_efficiency"
],
"properties": {
"num_infusions": {
"type": "integer",
"description": "Optional integer infusions (1-12, default 1) multiplying the per-kg CD3 target when the planned dose is the total across infusions. Shi 2020 collected one 2e8/kg DLI product."
},
"donor_alc_per_ul": {
"type": "number",
"description": "Donor absolute lymphocyte count on the collection day, cells/µL (100-20000, magent clamp). Shi 2020 estimates CD3+ as 60% of this ALC rather than a measured CD3 count. magent does not assay ALC."
},
"cd3_target_per_kg": {
"type": "number",
"description": "Planned CD3+ cells per recipient kilogram (1e6-1e9, magent clamp). Shi 2020's haploidentical protocol used 2e8/kg; a first DLI is often 1e7/kg. Not a CD34 HPC dose."
},
"recipient_weight_kg": {
"type": "number",
"description": "Recipient weight in kilograms (1-500, magent clamp). Shi 2020 doses CD3 per recipient kg. magent does not weigh the recipient."
},
"collection_efficiency": {
"type": "number",
"description": "Caller-assigned facility lymphocyte CE2 as a proportion in (0, 1]. Shi 2020 used a conservative first-quartile 0.57; magent does not default to 0.57 or invent a CE."
}
}
}
},
"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/dli_volume",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"num_infusions": 1,
"donor_alc_per_ul": 1800,
"cd3_target_per_kg": 10000000,
"recipient_weight_kg": 70,
"collection_efficiency": 0.5
},
{
"num_infusions": 1,
"donor_alc_per_ul": 1800,
"cd3_target_per_kg": 10000000,
"recipient_weight_kg": 70,
"collection_efficiency": 0.5
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/dli_volume",
"count": 2,
"items": [
{
"formula": "shi_2020",
"citation": {
"id": "shi-2020-dli",
"doi": "10.1111/trf.15576",
"pmid": "31756000",
"title": "Validation of simple prediction algorithms to consistently achieve CD3+ and postselection CD34+ targets with leukapheresis",
"source": "Transfusion. 2020;60(1):133-143",
"authors": "Shi PA, Sachais BS, Nandi V, Brochstein JA, Weinberg RS, Zhang J, Yoon EJ"
},
"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.",
"cd3_fraction": 0.6,
"num_infusions": 1,
"donor_alc_per_ul": 1800,
"process_volume_l": 1.3,
"cd3_target_per_kg": 10000000,
"formula_expression": "process_volume_l = (recipient_weight_kg * cd3_target_per_kg * num_infusions) / (0.6 * donor_alc_per_ul * collection_efficiency * 1e6)",
"total_cd3_required": 700000000,
"recipient_weight_kg": 70,
"estimated_cd3_per_ul": 1080,
"collection_efficiency": 0.5
},
{
"formula": "shi_2020",
"citation": {
"id": "shi-2020-dli",
"doi": "10.1111/trf.15576",
"pmid": "31756000",
"title": "Validation of simple prediction algorithms to consistently achieve CD3+ and postselection CD34+ targets with leukapheresis",
"source": "Transfusion. 2020;60(1):133-143",
"authors": "Shi PA, Sachais BS, Nandi V, Brochstein JA, Weinberg RS, Zhang J, Yoon EJ"
},
"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.",
"cd3_fraction": 0.6,
"num_infusions": 1,
"donor_alc_per_ul": 1800,
"process_volume_l": 1.3,
"cd3_target_per_kg": 10000000,
"formula_expression": "process_volume_l = (recipient_weight_kg * cd3_target_per_kg * num_infusions) / (0.6 * donor_alc_per_ul * collection_efficiency * 1e6)",
"total_cd3_required": 700000000,
"recipient_weight_kg": 70,
"estimated_cd3_per_ul": 1080,
"collection_efficiency": 0.5
}
]
}
},
"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": [
"recipient_weight_kg",
"cd3_target_per_kg",
"donor_alc_per_ul",
"collection_efficiency"
],
"properties": {
"num_infusions": {
"type": "integer",
"description": "Optional integer infusions (1-12, default 1) multiplying the per-kg CD3 target when the planned dose is the total across infusions. Shi 2020 collected one 2e8/kg DLI product."
},
"donor_alc_per_ul": {
"type": "number",
"description": "Donor absolute lymphocyte count on the collection day, cells/µL (100-20000, magent clamp). Shi 2020 estimates CD3+ as 60% of this ALC rather than a measured CD3 count. magent does not assay ALC."
},
"cd3_target_per_kg": {
"type": "number",
"description": "Planned CD3+ cells per recipient kilogram (1e6-1e9, magent clamp). Shi 2020's haploidentical protocol used 2e8/kg; a first DLI is often 1e7/kg. Not a CD34 HPC dose."
},
"recipient_weight_kg": {
"type": "number",
"description": "Recipient weight in kilograms (1-500, magent clamp). Shi 2020 doses CD3 per recipient kg. magent does not weigh the recipient."
},
"collection_efficiency": {
"type": "number",
"description": "Caller-assigned facility lymphocyte CE2 as a proportion in (0, 1]. Shi 2020 used a conservative first-quartile 0.57; magent does not default to 0.57 or invent a CE."
}
}
},
"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
- 2026-09-03 03:21Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-11 19:46Z
- 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. 7 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/dli_volume, 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.