magent
Tate 2013 VACS Index 1.0 (not VACS 2.0): age, CD4, HIV-1 RNA, hemoglobin g/dL, caller-assigned FIB-4 and eGFR, and hepatitis C. Points 0-164. No published named mortality bands. magent does not compute FIB-4 or MDRD/CKD-EPI and does not order ART.
Tradingofflineeip155:8453Exactvia cdp
Vacs-1HivMortalityArtInfection
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 06:14Z
—
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/vacs_1",
"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/vacs_1",
"tags": [
"vacs-1",
"hiv",
"mortality",
"art",
"infection"
],
"mimeType": "application/json",
"description": "Tate 2013 VACS Index 1.0 (not VACS 2.0): age, CD4, HIV-1 RNA, hemoglobin g/dL, caller-assigned FIB-4 and eGFR, and hepatitis C. Points 0-164. No published named mortality bands. magent does not compute FIB-4 or MDRD/CKD-EPI and does not order ART.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"age": 40,
"fib4": 1,
"hepatitis_c": false,
"cd4_cells_mm3": 600,
"hemoglobin_g_dl": 15,
"hiv_rna_copies_ml": 200,
"egfr_ml_min_1_73m2": 90
}
},
"output": {
"type": "json",
"example": {
"age": 40,
"fib4": 1,
"score": 0,
"formula": "vacs_1",
"citation": {
"id": "tate-2013",
"doi": "10.1097/QAD.0b013e32835b8c7f",
"pmid": "23242319",
"title": "The VACS Index: An internationally generalizable risk index for mortality after one year of antiretroviral therapy",
"source": "AIDS. 2013;27(4):563-572",
"authors": "Tate JP, Justice AC, Hughes MD, Bonnet F, Reiss P, Mocroft A, et al."
},
"max_score": 164,
"components": [
{
"value": 40,
"factor": "age",
"points": 0,
"present": false
},
{
"value": 600,
"factor": "cd4_cells_mm3",
"points": 0,
"present": false
},
{
"value": 200,
"factor": "hiv_rna_copies_ml",
"points": 0,
"present": false
},
{
"value": 15,
"factor": "hemoglobin_g_dl",
"points": 0,
"present": false
},
{
"value": 1,
"factor": "fib4",
"points": 0,
"present": false
},
{
"value": 90,
"factor": "egfr_ml_min_1_73m2",
"points": 0,
"present": false
},
{
"factor": "hepatitis_c",
"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.",
"hepatitis_c": false,
"cd4_cells_mm3": 600,
"hemoglobin_g_dl": 15,
"hiv_rna_copies_ml": 200,
"egfr_ml_min_1_73m2": 90,
"formula_expression": "VACS 1.0 = age (<50 0; 50-64 12; ≥65 27) + cd4_cells_mm3 (≥500 0; 350-499 6; 200-349 6; 100-199 10; 50-99 28; <50 29) + hiv_rna_copies_ml (<500 0; 500-99999 7; ≥100000 14) + hemoglobin_g_dl (≥14 0; 12-13.9 10; 10-11.9 22; <10 38) + fib4 (<1.45 0; 1.45-3.25 6; >3.25 25) + egfr_ml_min_1_73m2 (≥60 0; 45-59.9 6; 30-44.9 8; <30 26) + hepatitis_c 5; Tate 2013 VACS Index column (Brown 2014 Table 1 reprint); max 164; caller-assigned FIB-4 and eGFR; not VACS 2.0"
}
},
"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",
"cd4_cells_mm3",
"hiv_rna_copies_ml",
"hemoglobin_g_dl",
"fib4",
"egfr_ml_min_1_73m2",
"hepatitis_c"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (integer 18-120). Tate 2013 VACS Index: <50 scores 0; 50-64 scores 12; ≥65 scores 27."
},
"fib4": {
"type": "number",
"description": "Caller-assigned FIB-4 (0.1-20). Tate 2013: <1.45 scores 0; 1.45-3.25 scores 6; >3.25 scores 25. magent does not recompute FIB-4."
},
"hepatitis_c": {
"type": "boolean",
"description": "Caller-assigned hepatitis C co-infection (Tate 2013). true scores 5. magent does not diagnose hepatitis C."
},
"cd4_cells_mm3": {
"type": "integer",
"description": "CD4 count in cells/mm³ (integer 1-2000). Tate 2013: ≥500 scores 0; 350-499 scores 6; 200-349 scores 6; 100-199 scores 10; 50-99 scores 28; <50 scores 29. magent does not assay CD4."
},
"hemoglobin_g_dl": {
"type": "number",
"description": "Hemoglobin in g/dL (3-22). Tate 2013: ≥14 scores 0; 12-13.9 scores 10; 10-11.9 scores 22; <10 scores 38. magent does not assay hemoglobin."
},
"hiv_rna_copies_ml": {
"type": "number",
"description": "HIV-1 RNA in copies/mL (0-10000000). Tate 2013: <500 scores 0; 500-99999 scores 7; ≥100000 scores 14. magent does not assay viral load."
},
"egfr_ml_min_1_73m2": {
"type": "number",
"description": "Caller-assigned eGFR in mL/min/1.73m² (5-200). Tate 2013: ≥60 scores 0; 45-59.9 scores 6; 30-44.9 scores 8; <30 scores 26. magent does not compute MDRD or CKD-EPI."
}
}
}
},
"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/vacs_1",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"age": 40,
"fib4": 1,
"hepatitis_c": false,
"cd4_cells_mm3": 600,
"hemoglobin_g_dl": 15,
"hiv_rna_copies_ml": 200,
"egfr_ml_min_1_73m2": 90
},
{
"age": 40,
"fib4": 1,
"hepatitis_c": false,
"cd4_cells_mm3": 600,
"hemoglobin_g_dl": 15,
"hiv_rna_copies_ml": 200,
"egfr_ml_min_1_73m2": 90
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/vacs_1",
"count": 2,
"items": [
{
"age": 40,
"fib4": 1,
"score": 0,
"formula": "vacs_1",
"citation": {
"id": "tate-2013",
"doi": "10.1097/QAD.0b013e32835b8c7f",
"pmid": "23242319",
"title": "The VACS Index: An internationally generalizable risk index for mortality after one year of antiretroviral therapy",
"source": "AIDS. 2013;27(4):563-572",
"authors": "Tate JP, Justice AC, Hughes MD, Bonnet F, Reiss P, Mocroft A, et al."
},
"max_score": 164,
"components": [
{
"value": 40,
"factor": "age",
"points": 0,
"present": false
},
{
"value": 600,
"factor": "cd4_cells_mm3",
"points": 0,
"present": false
},
{
"value": 200,
"factor": "hiv_rna_copies_ml",
"points": 0,
"present": false
},
{
"value": 15,
"factor": "hemoglobin_g_dl",
"points": 0,
"present": false
},
{
"value": 1,
"factor": "fib4",
"points": 0,
"present": false
},
{
"value": 90,
"factor": "egfr_ml_min_1_73m2",
"points": 0,
"present": false
},
{
"factor": "hepatitis_c",
"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.",
"hepatitis_c": false,
"cd4_cells_mm3": 600,
"hemoglobin_g_dl": 15,
"hiv_rna_copies_ml": 200,
"egfr_ml_min_1_73m2": 90,
"formula_expression": "VACS 1.0 = age (<50 0; 50-64 12; ≥65 27) + cd4_cells_mm3 (≥500 0; 350-499 6; 200-349 6; 100-199 10; 50-99 28; <50 29) + hiv_rna_copies_ml (<500 0; 500-99999 7; ≥100000 14) + hemoglobin_g_dl (≥14 0; 12-13.9 10; 10-11.9 22; <10 38) + fib4 (<1.45 0; 1.45-3.25 6; >3.25 25) + egfr_ml_min_1_73m2 (≥60 0; 45-59.9 6; 30-44.9 8; <30 26) + hepatitis_c 5; Tate 2013 VACS Index column (Brown 2014 Table 1 reprint); max 164; caller-assigned FIB-4 and eGFR; not VACS 2.0"
},
{
"age": 40,
"fib4": 1,
"score": 0,
"formula": "vacs_1",
"citation": {
"id": "tate-2013",
"doi": "10.1097/QAD.0b013e32835b8c7f",
"pmid": "23242319",
"title": "The VACS Index: An internationally generalizable risk index for mortality after one year of antiretroviral therapy",
"source": "AIDS. 2013;27(4):563-572",
"authors": "Tate JP, Justice AC, Hughes MD, Bonnet F, Reiss P, Mocroft A, et al."
},
"max_score": 164,
"components": [
{
"value": 40,
"factor": "age",
"points": 0,
"present": false
},
{
"value": 600,
"factor": "cd4_cells_mm3",
"points": 0,
"present": false
},
{
"value": 200,
"factor": "hiv_rna_copies_ml",
"points": 0,
"present": false
},
{
"value": 15,
"factor": "hemoglobin_g_dl",
"points": 0,
"present": false
},
{
"value": 1,
"factor": "fib4",
"points": 0,
"present": false
},
{
"value": 90,
"factor": "egfr_ml_min_1_73m2",
"points": 0,
"present": false
},
{
"factor": "hepatitis_c",
"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.",
"hepatitis_c": false,
"cd4_cells_mm3": 600,
"hemoglobin_g_dl": 15,
"hiv_rna_copies_ml": 200,
"egfr_ml_min_1_73m2": 90,
"formula_expression": "VACS 1.0 = age (<50 0; 50-64 12; ≥65 27) + cd4_cells_mm3 (≥500 0; 350-499 6; 200-349 6; 100-199 10; 50-99 28; <50 29) + hiv_rna_copies_ml (<500 0; 500-99999 7; ≥100000 14) + hemoglobin_g_dl (≥14 0; 12-13.9 10; 10-11.9 22; <10 38) + fib4 (<1.45 0; 1.45-3.25 6; >3.25 25) + egfr_ml_min_1_73m2 (≥60 0; 45-59.9 6; 30-44.9 8; <30 26) + hepatitis_c 5; Tate 2013 VACS Index column (Brown 2014 Table 1 reprint); max 164; caller-assigned FIB-4 and eGFR; not VACS 2.0"
}
]
}
},
"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",
"cd4_cells_mm3",
"hiv_rna_copies_ml",
"hemoglobin_g_dl",
"fib4",
"egfr_ml_min_1_73m2",
"hepatitis_c"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (integer 18-120). Tate 2013 VACS Index: <50 scores 0; 50-64 scores 12; ≥65 scores 27."
},
"fib4": {
"type": "number",
"description": "Caller-assigned FIB-4 (0.1-20). Tate 2013: <1.45 scores 0; 1.45-3.25 scores 6; >3.25 scores 25. magent does not recompute FIB-4."
},
"hepatitis_c": {
"type": "boolean",
"description": "Caller-assigned hepatitis C co-infection (Tate 2013). true scores 5. magent does not diagnose hepatitis C."
},
"cd4_cells_mm3": {
"type": "integer",
"description": "CD4 count in cells/mm³ (integer 1-2000). Tate 2013: ≥500 scores 0; 350-499 scores 6; 200-349 scores 6; 100-199 scores 10; 50-99 scores 28; <50 scores 29. magent does not assay CD4."
},
"hemoglobin_g_dl": {
"type": "number",
"description": "Hemoglobin in g/dL (3-22). Tate 2013: ≥14 scores 0; 12-13.9 scores 10; 10-11.9 scores 22; <10 scores 38. magent does not assay hemoglobin."
},
"hiv_rna_copies_ml": {
"type": "number",
"description": "HIV-1 RNA in copies/mL (0-10000000). Tate 2013: <500 scores 0; 500-99999 scores 7; ≥100000 scores 14. magent does not assay viral load."
},
"egfr_ml_min_1_73m2": {
"type": "number",
"description": "Caller-assigned eGFR in mL/min/1.73m² (5-200). Tate 2013: ≥60 scores 0; 45-59.9 scores 6; 30-44.9 scores 8; <30 scores 26. magent does not compute MDRD or CKD-EPI."
}
}
},
"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 06:14Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-10 22:15Z
- 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/vacs_1, 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.