magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Tradingofflineeip155:8453Exactvia cdp
Sg-portSalivary-glandRadiotherapySurvivalHematology
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 5 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 2026-09-04 08:10Z
—
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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"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"paymentFlow": "upfront",
"resourceUrl": "https://api.magentlab.com/api/calc/sg_port",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
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"resource": {
"url": "https://api.magentlab.com/api/calc/sg_port",
"tags": [
"sg-port",
"salivary-gland",
"radiotherapy",
"survival",
"hematology"
],
"mimeType": "application/json",
"description": "Jacobs 2022 Table 3 Cox linear predictor for overall survival after resected major salivary gland cancer with versus without postoperative radiotherapy. Age per 10 years by PORT, male, Charlson-Deyo per point, gland, PORT by T stage, nodal-positivity ratio band, grade step, and positive margin as ln(HR). Not a 2-/5-/10-year OS percent (no printed S0). Not a radiation order. magent does not compute Charlson-Deyo or count nodes.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"age": 65,
"sex": "male",
"port": false,
"gland": "parotid",
"grade": "low",
"margin": "negative",
"t_stage": "t2",
"charlson_deyo": "0",
"nodal_positivity_ratio": "0"
}
},
"output": {
"type": "json",
"example": {
"age": 65,
"sex": "male",
"port": false,
"gland": "parotid",
"grade": "low",
"margin": "negative",
"formula": "sg_port",
"t_stage": "t2",
"citation": {
"id": "jacobs-2022-sg-port",
"doi": "10.1016/j.oraloncology.2022.105955",
"pmid": "35752134",
"title": "Prediction model to estimate overall survival benefit of postoperative radiotherapy for resected major salivary gland cancers",
"source": "Oral Oncol. 2022;132:105955",
"authors": "Jacobs CD, Barak I, Jung SH, et al."
},
"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.",
"risk_score": 2.968477,
"charlson_deyo": "0",
"linear_predictor": 2.968477,
"formula_expression": "lp = ln(age_hr_by_port)*(age/10) + ln(1.28)*male + ln(1.22)*charlson_deyo_step + ln(1.32)*submandibular + ln(0.72)*sublingual + ln(port_hr_by_t)*port + ln(1.29)*nodal_ratio_step + ln(1.34)*grade_step + ln(1.26)*positive_margin; Jacobs 2022 Table 3 multivariable HRs, β = ln(HR); age_hr is 1.52 without PORT and 1.37 with PORT (per 10 years); port_hr is 1.03/0.83/0.68/0.55 for pT1/pT2/pT3/pT4; charlson_deyo_step 0/1/2/3 for 0/1/2/ge_3; nodal_ratio_step 0/1/2/3 for 0 / 0.1-10 / 10.1-49.9 / ge_50; grade_step 0/1/2 for low/intermediate/high; T-stage main-effect HRs printed as dashes (PORT×T interaction); no printed S0; not 2-/5-/10-year OS percents; not a radiation order; magent does not compute Charlson-Deyo or count nodes",
"nodal_positivity_ratio": "0"
}
},
"iconUrl": "https://api.magentlab.com/favicon.ico"
},
"schema": {
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"$schema": "https://json-schema.org/draft/2020-12/schema",
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"properties": {
"input": {
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"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",
"sex",
"charlson_deyo",
"gland",
"t_stage",
"grade",
"margin",
"nodal_positivity_ratio",
"port"
],
"properties": {
"age": {
"type": "integer",
"description": "Age at diagnosis in years (integer 18-120). Jacobs 2022 Table 3: per 10 years, HR 1.52 without PORT and HR 1.37 with PORT. magent does not assign age."
},
"sex": {
"enum": [
"female",
"male"
],
"type": "string",
"description": "Caller-assigned sex. Table 3: male versus female HR 1.28. magent does not assign sex."
},
"port": {
"type": "boolean",
"description": "true if postoperative radiotherapy was given, false if not. Selects the Table 3 age HR and the T-stage-specific PORT HR. Not a radiation order."
},
"gland": {
"enum": [
"parotid",
"submandibular",
"sublingual"
],
"type": "string",
"description": "Involved major salivary gland. Table 3 versus parotid: submandibular HR 1.32; sublingual HR 0.72. magent does not assign the primary site."
},
"grade": {
"enum": [
"low",
"intermediate",
"high"
],
"type": "string",
"description": "Caller-assigned grade (low, intermediate, or high). Table 3 prints a single HR 1.34; magent applies ln(1.34) per step from low. magent does not assign grade."
},
"margin": {
"enum": [
"negative",
"positive"
],
"type": "string",
"description": "Surgical margin. Table 3: positive versus negative HR 1.26. magent does not read the pathology report."
},
"t_stage": {
"enum": [
"t1",
"t2",
"t3",
"t4"
],
"type": "string",
"description": "AJCC pathologic T stage (t1, t2, t3, or t4) as recorded. Table 3 PORT HRs: pT1 1.03, pT2 0.83, pT3 0.68, pT4 0.55. T-stage main-effect HRs were printed as dashes because of the PORT×T interaction; without PORT the T term is 0. magent does not assign T stage."
},
"charlson_deyo": {
"enum": [
"0",
"1",
"2",
"ge_3"
],
"type": "string",
"description": "Caller-assigned Charlson-Deyo score as published (0, 1, 2, or ge_3). Table 3 prints a single HR 1.22; magent applies ln(1.22) per step 0/1/2/3. magent does not compute Charlson-Deyo."
},
"nodal_positivity_ratio": {
"enum": [
"0",
"0.1-10",
"10.1-49.9",
"ge_50"
],
"type": "string",
"description": "Caller-assigned nodal-positivity ratio band as published: 0 (0%), 0.1-10, 10.1-49.9, or ge_50 (≥50%). Table 3 prints a single HR 1.29; magent applies ln(1.29) per a priori band step 0/1/2/3. magent does not count nodes."
}
}
}
},
"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/sg_port",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"age": 65,
"sex": "male",
"port": false,
"gland": "parotid",
"grade": "low",
"margin": "negative",
"t_stage": "t2",
"charlson_deyo": "0",
"nodal_positivity_ratio": "0"
},
{
"age": 65,
"sex": "male",
"port": false,
"gland": "parotid",
"grade": "low",
"margin": "negative",
"t_stage": "t2",
"charlson_deyo": "0",
"nodal_positivity_ratio": "0"
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/sg_port",
"count": 2,
"items": [
{
"age": 65,
"sex": "male",
"port": false,
"gland": "parotid",
"grade": "low",
"margin": "negative",
"formula": "sg_port",
"t_stage": "t2",
"citation": {
"id": "jacobs-2022-sg-port",
"doi": "10.1016/j.oraloncology.2022.105955",
"pmid": "35752134",
"title": "Prediction model to estimate overall survival benefit of postoperative radiotherapy for resected major salivary gland cancers",
"source": "Oral Oncol. 2022;132:105955",
"authors": "Jacobs CD, Barak I, Jung SH, et al."
},
"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.",
"risk_score": 2.968477,
"charlson_deyo": "0",
"linear_predictor": 2.968477,
"formula_expression": "lp = ln(age_hr_by_port)*(age/10) + ln(1.28)*male + ln(1.22)*charlson_deyo_step + ln(1.32)*submandibular + ln(0.72)*sublingual + ln(port_hr_by_t)*port + ln(1.29)*nodal_ratio_step + ln(1.34)*grade_step + ln(1.26)*positive_margin; Jacobs 2022 Table 3 multivariable HRs, β = ln(HR); age_hr is 1.52 without PORT and 1.37 with PORT (per 10 years); port_hr is 1.03/0.83/0.68/0.55 for pT1/pT2/pT3/pT4; charlson_deyo_step 0/1/2/3 for 0/1/2/ge_3; nodal_ratio_step 0/1/2/3 for 0 / 0.1-10 / 10.1-49.9 / ge_50; grade_step 0/1/2 for low/intermediate/high; T-stage main-effect HRs printed as dashes (PORT×T interaction); no printed S0; not 2-/5-/10-year OS percents; not a radiation order; magent does not compute Charlson-Deyo or count nodes",
"nodal_positivity_ratio": "0"
},
{
"age": 65,
"sex": "male",
"port": false,
"gland": "parotid",
"grade": "low",
"margin": "negative",
"formula": "sg_port",
"t_stage": "t2",
"citation": {
"id": "jacobs-2022-sg-port",
"doi": "10.1016/j.oraloncology.2022.105955",
"pmid": "35752134",
"title": "Prediction model to estimate overall survival benefit of postoperative radiotherapy for resected major salivary gland cancers",
"source": "Oral Oncol. 2022;132:105955",
"authors": "Jacobs CD, Barak I, Jung SH, et al."
},
"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.",
"risk_score": 2.968477,
"charlson_deyo": "0",
"linear_predictor": 2.968477,
"formula_expression": "lp = ln(age_hr_by_port)*(age/10) + ln(1.28)*male + ln(1.22)*charlson_deyo_step + ln(1.32)*submandibular + ln(0.72)*sublingual + ln(port_hr_by_t)*port + ln(1.29)*nodal_ratio_step + ln(1.34)*grade_step + ln(1.26)*positive_margin; Jacobs 2022 Table 3 multivariable HRs, β = ln(HR); age_hr is 1.52 without PORT and 1.37 with PORT (per 10 years); port_hr is 1.03/0.83/0.68/0.55 for pT1/pT2/pT3/pT4; charlson_deyo_step 0/1/2/3 for 0/1/2/ge_3; nodal_ratio_step 0/1/2/3 for 0 / 0.1-10 / 10.1-49.9 / ge_50; grade_step 0/1/2 for low/intermediate/high; T-stage main-effect HRs printed as dashes (PORT×T interaction); no printed S0; not 2-/5-/10-year OS percents; not a radiation order; magent does not compute Charlson-Deyo or count nodes",
"nodal_positivity_ratio": "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",
"sex",
"charlson_deyo",
"gland",
"t_stage",
"grade",
"margin",
"nodal_positivity_ratio",
"port"
],
"properties": {
"age": {
"type": "integer",
"description": "Age at diagnosis in years (integer 18-120). Jacobs 2022 Table 3: per 10 years, HR 1.52 without PORT and HR 1.37 with PORT. magent does not assign age."
},
"sex": {
"enum": [
"female",
"male"
],
"type": "string",
"description": "Caller-assigned sex. Table 3: male versus female HR 1.28. magent does not assign sex."
},
"port": {
"type": "boolean",
"description": "true if postoperative radiotherapy was given, false if not. Selects the Table 3 age HR and the T-stage-specific PORT HR. Not a radiation order."
},
"gland": {
"enum": [
"parotid",
"submandibular",
"sublingual"
],
"type": "string",
"description": "Involved major salivary gland. Table 3 versus parotid: submandibular HR 1.32; sublingual HR 0.72. magent does not assign the primary site."
},
"grade": {
"enum": [
"low",
"intermediate",
"high"
],
"type": "string",
"description": "Caller-assigned grade (low, intermediate, or high). Table 3 prints a single HR 1.34; magent applies ln(1.34) per step from low. magent does not assign grade."
},
"margin": {
"enum": [
"negative",
"positive"
],
"type": "string",
"description": "Surgical margin. Table 3: positive versus negative HR 1.26. magent does not read the pathology report."
},
"t_stage": {
"enum": [
"t1",
"t2",
"t3",
"t4"
],
"type": "string",
"description": "AJCC pathologic T stage (t1, t2, t3, or t4) as recorded. Table 3 PORT HRs: pT1 1.03, pT2 0.83, pT3 0.68, pT4 0.55. T-stage main-effect HRs were printed as dashes because of the PORT×T interaction; without PORT the T term is 0. magent does not assign T stage."
},
"charlson_deyo": {
"enum": [
"0",
"1",
"2",
"ge_3"
],
"type": "string",
"description": "Caller-assigned Charlson-Deyo score as published (0, 1, 2, or ge_3). Table 3 prints a single HR 1.22; magent applies ln(1.22) per step 0/1/2/3. magent does not compute Charlson-Deyo."
},
"nodal_positivity_ratio": {
"enum": [
"0",
"0.1-10",
"10.1-49.9",
"ge_50"
],
"type": "string",
"description": "Caller-assigned nodal-positivity ratio band as published: 0 (0%), 0.1-10, 10.1-49.9, or ge_50 (≥50%). Table 3 prints a single HR 1.29; magent applies ln(1.29) per a priori band step 0/1/2/3. magent does not count nodes."
}
}
},
"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
- 2026-09-04 08:10Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-12 14:15Z
- 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. 5 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/sg_port, 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.