magent
Bellera 2012 G8 geriatric screening tool: seven MNA items (A, B, C, E, F, H, P) plus age. Food intake 0–2, weight loss 0–3, mobility 0–2, neuropsychological 0–2, BMI 0–3, more than 3 medications 0 if true else 1, health vs peers 0/0.5/1/2, age 0–2. Total 0–17, higher is better. Score ≤14 is an impaired screen. Not a CGA, chemotherapy order, Soubeyran 2014 ONCODAGE, or VES-13. magent does not interview or weigh the patient.
TradingLiveeip155:8453Exactvia cdp
G8GeriatricScreeningOncologyCancer
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 9 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 2026-08-31 13:24Z
—
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": [
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"resource": {
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"tags": [
"g8",
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"screening",
"oncology",
"cancer"
],
"mimeType": "application/json",
"description": "Bellera 2012 G8 geriatric screening tool: seven MNA items (A, B, C, E, F, H, P) plus age. Food intake 0–2, weight loss 0–3, mobility 0–2, neuropsychological 0–2, BMI 0–3, more than 3 medications 0 if true else 1, health vs peers 0/0.5/1/2, age 0–2. Total 0–17, higher is better. Score ≤14 is an impaired screen. Not a CGA, chemotherapy order, Soubeyran 2014 ONCODAGE, or VES-13. magent does not interview or weigh the patient.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"bmi": "ge_23",
"age_band": "lt_80",
"mobility": "goes_out",
"food_intake": "no_decrease",
"weight_loss": "none",
"health_vs_peers": "better",
"neuropsychological": "none",
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}
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"example": {
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"formula": "g8",
"age_band": "lt_80",
"citation": {
"id": "bellera-2012",
"doi": "10.1093/annonc/mdr587",
"pmid": "22250183",
"title": "Screening older cancer patients: first evaluation of the G-8 geriatric screening tool",
"source": "Ann Oncol. 2012;23(8):2166-2172",
"authors": "Bellera CA, Rainfray M, Mathoulin-Pélissier S, et al."
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},
{
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"points": 3,
"present": true
},
{
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"points": 2,
"present": true
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{
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"factor": "neuropsychological",
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{
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{
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"factor": "more_than_3_medications",
"points": 1,
"present": true
},
{
"value": "better",
"factor": "health_vs_peers",
"points": 2,
"present": true
},
{
"value": "lt_80",
"factor": "age_band",
"points": 2,
"present": true
}
],
"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.",
"food_intake": "no_decrease",
"weight_loss": "none",
"health_vs_peers": "better",
"at_or_below_cutoff": false,
"formula_expression": "G8 (Bellera 2012) = food_intake (severe_decrease 0, moderate_decrease 1, no_decrease 2) + weight_loss (gt_3kg 0, unknown 1, 1_to_3kg 2, none 3) + mobility (bed_or_chair 0, bed_chair_no_out 1, goes_out 2) + neuropsychological (severe 0, mild 1, none 2) + bmi (lt_19 0, 19_to_lt_21 1, 21_to_lt_23 2, ge_23 3) + more_than_3_medications (true 0, false 1) + health_vs_peers (not_as_good 0, unknown 0.5, as_good 1, better 2) + age_band (gt_85 0, 80_to_85 1, lt_80 2); seven MNA items A,B,C,E,F,H,P plus age; max 17; higher is better; <=14 impaired screen; half-point on health unknown; not Soubeyran 2014 ONCODAGE; not VES-13",
"neuropsychological": "none",
"more_than_3_medications": 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": [
"food_intake",
"weight_loss",
"mobility",
"neuropsychological",
"bmi",
"more_than_3_medications",
"health_vs_peers",
"age_band"
],
"properties": {
"bmi": {
"type": "string",
"description": "Bellera 2012 G8 BMI band (MNA item F) as assigned by the caller. lt_19 0, 19_to_lt_21 1, 21_to_lt_23 2, ge_23 3. magent does not weigh the patient or compute BMI."
},
"age_band": {
"type": "string",
"description": "Bellera 2012 G8 age band as assigned by the caller. gt_85 0, 80_to_85 1, lt_80 2. magent does not assign the age band from a numeric age."
},
"mobility": {
"type": "string",
"description": "Bellera 2012 G8 mobility (MNA item C) as assigned by the caller. bed_or_chair 0, bed_chair_no_out 1, goes_out 2. magent does not examine the patient."
},
"food_intake": {
"type": "string",
"description": "Bellera 2012 G8 food-intake decline over 3 months (MNA item A) as assigned by the caller. severe_decrease 0, moderate_decrease 1, no_decrease 2. magent does not interview the patient."
},
"weight_loss": {
"type": "string",
"description": "Bellera 2012 G8 weight loss during the last 3 months (MNA item B) as assigned by the caller. gt_3kg 0, unknown 1, 1_to_3kg 2, none 3. magent does not weigh the patient."
},
"health_vs_peers": {
"type": "string",
"description": "Bellera 2012 G8 self-rated health versus people of the same age (MNA item P) as assigned by the caller. not_as_good 0, unknown 0.5, as_good 1, better 2. Half-point on unknown is not integer-rounded. magent does not interview the patient."
},
"neuropsychological": {
"type": "string",
"description": "Bellera 2012 G8 neuropsychological problems (MNA item E) as assigned by the caller. severe 0, mild 1, none 2. magent does not interview the patient."
},
"more_than_3_medications": {
"type": "boolean",
"description": "Bellera 2012 G8 takes more than 3 medications per day (MNA item H) as assigned by the caller. true scores 0; false scores 1. magent does not review the medication list."
}
}
}
},
"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
[
{
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"extra": {
"name": "USD Coin",
"version": "2",
"paymentFlow": "upfront",
"resourceUrl": "https://api.magentlab.com/api/calc/g8",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"bmi": "ge_23",
"age_band": "lt_80",
"mobility": "goes_out",
"food_intake": "no_decrease",
"weight_loss": "none",
"health_vs_peers": "better",
"neuropsychological": "none",
"more_than_3_medications": false
},
{
"bmi": "ge_23",
"age_band": "lt_80",
"mobility": "goes_out",
"food_intake": "no_decrease",
"weight_loss": "none",
"health_vs_peers": "better",
"neuropsychological": "none",
"more_than_3_medications": false
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/g8",
"count": 2,
"items": [
{
"bmi": "ge_23",
"score": 17,
"formula": "g8",
"age_band": "lt_80",
"citation": {
"id": "bellera-2012",
"doi": "10.1093/annonc/mdr587",
"pmid": "22250183",
"title": "Screening older cancer patients: first evaluation of the G-8 geriatric screening tool",
"source": "Ann Oncol. 2012;23(8):2166-2172",
"authors": "Bellera CA, Rainfray M, Mathoulin-Pélissier S, et al."
},
"mobility": "goes_out",
"max_score": 17,
"components": [
{
"value": "no_decrease",
"factor": "food_intake",
"points": 2,
"present": true
},
{
"value": "none",
"factor": "weight_loss",
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{
"value": "goes_out",
"factor": "mobility",
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"present": true
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{
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"factor": "neuropsychological",
"points": 2,
"present": true
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{
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"factor": "bmi",
"points": 3,
"present": true
},
{
"value": false,
"factor": "more_than_3_medications",
"points": 1,
"present": true
},
{
"value": "better",
"factor": "health_vs_peers",
"points": 2,
"present": true
},
{
"value": "lt_80",
"factor": "age_band",
"points": 2,
"present": true
}
],
"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.",
"food_intake": "no_decrease",
"weight_loss": "none",
"health_vs_peers": "better",
"at_or_below_cutoff": false,
"formula_expression": "G8 (Bellera 2012) = food_intake (severe_decrease 0, moderate_decrease 1, no_decrease 2) + weight_loss (gt_3kg 0, unknown 1, 1_to_3kg 2, none 3) + mobility (bed_or_chair 0, bed_chair_no_out 1, goes_out 2) + neuropsychological (severe 0, mild 1, none 2) + bmi (lt_19 0, 19_to_lt_21 1, 21_to_lt_23 2, ge_23 3) + more_than_3_medications (true 0, false 1) + health_vs_peers (not_as_good 0, unknown 0.5, as_good 1, better 2) + age_band (gt_85 0, 80_to_85 1, lt_80 2); seven MNA items A,B,C,E,F,H,P plus age; max 17; higher is better; <=14 impaired screen; half-point on health unknown; not Soubeyran 2014 ONCODAGE; not VES-13",
"neuropsychological": "none",
"more_than_3_medications": false
},
{
"bmi": "ge_23",
"score": 17,
"formula": "g8",
"age_band": "lt_80",
"citation": {
"id": "bellera-2012",
"doi": "10.1093/annonc/mdr587",
"pmid": "22250183",
"title": "Screening older cancer patients: first evaluation of the G-8 geriatric screening tool",
"source": "Ann Oncol. 2012;23(8):2166-2172",
"authors": "Bellera CA, Rainfray M, Mathoulin-Pélissier S, et al."
},
"mobility": "goes_out",
"max_score": 17,
"components": [
{
"value": "no_decrease",
"factor": "food_intake",
"points": 2,
"present": true
},
{
"value": "none",
"factor": "weight_loss",
"points": 3,
"present": true
},
{
"value": "goes_out",
"factor": "mobility",
"points": 2,
"present": true
},
{
"value": "none",
"factor": "neuropsychological",
"points": 2,
"present": true
},
{
"value": "ge_23",
"factor": "bmi",
"points": 3,
"present": true
},
{
"value": false,
"factor": "more_than_3_medications",
"points": 1,
"present": true
},
{
"value": "better",
"factor": "health_vs_peers",
"points": 2,
"present": true
},
{
"value": "lt_80",
"factor": "age_band",
"points": 2,
"present": true
}
],
"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.",
"food_intake": "no_decrease",
"weight_loss": "none",
"health_vs_peers": "better",
"at_or_below_cutoff": false,
"formula_expression": "G8 (Bellera 2012) = food_intake (severe_decrease 0, moderate_decrease 1, no_decrease 2) + weight_loss (gt_3kg 0, unknown 1, 1_to_3kg 2, none 3) + mobility (bed_or_chair 0, bed_chair_no_out 1, goes_out 2) + neuropsychological (severe 0, mild 1, none 2) + bmi (lt_19 0, 19_to_lt_21 1, 21_to_lt_23 2, ge_23 3) + more_than_3_medications (true 0, false 1) + health_vs_peers (not_as_good 0, unknown 0.5, as_good 1, better 2) + age_band (gt_85 0, 80_to_85 1, lt_80 2); seven MNA items A,B,C,E,F,H,P plus age; max 17; higher is better; <=14 impaired screen; half-point on health unknown; not Soubeyran 2014 ONCODAGE; not VES-13",
"neuropsychological": "none",
"more_than_3_medications": 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": [
"food_intake",
"weight_loss",
"mobility",
"neuropsychological",
"bmi",
"more_than_3_medications",
"health_vs_peers",
"age_band"
],
"properties": {
"bmi": {
"type": "string",
"description": "Bellera 2012 G8 BMI band (MNA item F) as assigned by the caller. lt_19 0, 19_to_lt_21 1, 21_to_lt_23 2, ge_23 3. magent does not weigh the patient or compute BMI."
},
"age_band": {
"type": "string",
"description": "Bellera 2012 G8 age band as assigned by the caller. gt_85 0, 80_to_85 1, lt_80 2. magent does not assign the age band from a numeric age."
},
"mobility": {
"type": "string",
"description": "Bellera 2012 G8 mobility (MNA item C) as assigned by the caller. bed_or_chair 0, bed_chair_no_out 1, goes_out 2. magent does not examine the patient."
},
"food_intake": {
"type": "string",
"description": "Bellera 2012 G8 food-intake decline over 3 months (MNA item A) as assigned by the caller. severe_decrease 0, moderate_decrease 1, no_decrease 2. magent does not interview the patient."
},
"weight_loss": {
"type": "string",
"description": "Bellera 2012 G8 weight loss during the last 3 months (MNA item B) as assigned by the caller. gt_3kg 0, unknown 1, 1_to_3kg 2, none 3. magent does not weigh the patient."
},
"health_vs_peers": {
"type": "string",
"description": "Bellera 2012 G8 self-rated health versus people of the same age (MNA item P) as assigned by the caller. not_as_good 0, unknown 0.5, as_good 1, better 2. Half-point on unknown is not integer-rounded. magent does not interview the patient."
},
"neuropsychological": {
"type": "string",
"description": "Bellera 2012 G8 neuropsychological problems (MNA item E) as assigned by the caller. severe 0, mild 1, none 2. magent does not interview the patient."
},
"more_than_3_medications": {
"type": "boolean",
"description": "Bellera 2012 G8 takes more than 3 medications per day (MNA item H) as assigned by the caller. true scores 0; false scores 1. magent does not review the medication list."
}
}
},
"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 13:24Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-22 22:15Z
- x402 version
- 2
- Max timeout
- 600s
- Liveness probe
- HTTP 402
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. 9 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/g8, 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.